Publications by authors named "Yanming Zhao"

60 Publications

Cubic MnVO fabricated through a facile sol-gel process as an anode material for lithium-ion batteries: morphology and performance evolution.

Dalton Trans 2022 Mar 22;51(12):4644-4652. Epub 2022 Mar 22.

School of Physics, South China University of Technology, Guangzhou, 510640, P. R. China.

Metal vanadates have been popularly advocated as promising anode materials for lithium-ion batteries (LIBs) benefiting from their high theoretical specific capacity and abundant resources. Given that manganese and vanadium are reasonably economical elements and enjoy assorted redox reactions, they have extensive application prospects in energy storage systems. Here, we synthesized cubic MnVO as an anode for LIBs by an efficient sol-gel process. As a result, the MnVO electrode delivers distinguished electrochemical performance, including an appealing reversible specific capacity of nearly 1325 mA h g for 500 cycles at 200 mA g, excellent cycling stability with a capacity of 399 mA h g up to 500 cycles at 2000 mA g and a favorable rate capability of 516/410 mA h g at 1000/2000 mA g (when the current density recuperates to 200 mA g, the specific capacity still boosts as the number of cycles increases). What's more, electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) under various scan rates and scanning electron microscopy (SEM) are executed to ascertain with a greater depth the electrochemical kinetic characteristics and morphology of the MnVO electrode in different states. These results make known that MnVO is a credible anode material for LIBs, and such a facile and economical synthetic route can be extended to the preparation of other metal vanadate materials.
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http://dx.doi.org/10.1039/d1dt04216eDOI Listing
March 2022

Preparation and electrochemical performance of nanowire-shaped NaMnFe(PO)(PO) for sodium-ion and lithium-ion batteries.

Dalton Trans 2022 Mar 8;51(10):4173-4181. Epub 2022 Mar 8.

School of Physics, South China University of Technology, Guangzhou 510640, P. R. China.

A series of Fe-doped NaMnFe(PO)(PO) ( = 0, 0.2, 0.4) (abbreviated as NMFP-0/NMFP-0.2/NMFP-0.4) compounds have been successfully prepared using the sol-gel method. The Rietveld refinement results indicate that single-phase NaMnFe(PO)(PO) with an orthorhombic structure can be obtained. Our results reveal that by controlling the raw materials, the molar ratio of the reactants, the stirring rate of the precursor, the annealing temperature rate, and the reaction time, the proportion of nanowires in the morphology increases as the Fe component rises, and the NMFP-0.4 nanowire-shaped compounds show the best electrochemical activity when used as a cathode material for SIBs. Additionally, its specific capacity is enhanced to ∼126 mA h g in the first cycle when operated at 0.1 C and a working potential window of 1.8-4.3 V ( Na/Na). The material can also be applied in lithium-ion batteries as an anode and achieves ∼600 mA h g specific capacity at a current density of 0.1 C (1 C = 1000 mA g) in a working potential window of 0.01-3 V ( Li/Li).
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http://dx.doi.org/10.1039/d1dt04055cDOI Listing
March 2022

MgMoO as an anode material for lithium ion batteries and its multi-electron reaction mechanism.

Dalton Trans 2022 Feb 8;51(6):2493-2505. Epub 2022 Feb 8.

School of Physics and Optoelectronics, South China University of Technology, Guangzhou, 510640, P. R. China.

Single-phase magnesium molybdate, MgMoO, is successfully synthesized by a facile sol-gel method. Attributed to the multielectron reaction and the synergistic effect of the elements molybdenum (Mo) and magnesium (Mg), the MgMoO electrode exhibits excellent electrochemical properties. After activation, benefiting from the decrease in particle size and the uniform nanosphere morphology, the MgMoO electrodes can deliver a stable high specific capacity of about 1060 mA h g at a current density of 100 mA g after 600 cycles. Based on the important role of the activation process, electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM) and scan rate cyclic voltammetry (CV) measurement methods were employed to reveal the effect of the activation process on the electrochemical behavior of the electrode material. Furthermore, by combining the X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) results, we illustrate the lithium storage mechanism of the MgMoO electrode in detail.
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http://dx.doi.org/10.1039/d1dt03971gDOI Listing
February 2022

Iron vacancies engineering of [email protected] hybrids toward enhanced lithium-ion storage properties.

Nanotechnology 2022 Jan 7;33(13). Epub 2022 Jan 7.

Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, School of Physics, South China University of Technology, Guangzhou, 510640, People's Republic of China.

Defect engineering have profound influence on the energy storage properties of electrode hybrids by adjusting their intrinsic electronic characteristics. For iron carbide based materials, however, the effect of defect (especially cation vacancies) toward their electrochemical performance are still unclear. Herein, the feasible and scalable synthesis of [email protected] with 3D honeycomb-like carbon architecture and abundant Fe vacancies via template etching is reported. Such structure enable outstanding lithium-ion storage properties owing to hierarchical pores, improved intrinsic electrochemical activity, as well as the introduction of more active sites. As a result, the [email protected] presents a high reversible specific capacity of 1079 mAh gafter 1000 cycles. Moreover, an excellent cycling stability can be achieved via maintaining a high-capacity retention (689 mAh g, 98.4%) over 1000 cycles at 5 A g. This study provides a feasible strategy for developing high-performance hybrids with hierarchical pore and rich defects structures.
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http://dx.doi.org/10.1088/1361-6528/ac45c4DOI Listing
January 2022

[Application of esophageal CT to establish the evaluation model of foreign body position in rigid esophagoscopic surgery].

Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2021 Dec;35(12):1097-1100

Department of Otolaryngology Head and Neck Surgery,Beijing Tongren Hospital,Capital Medical University,Beijing Key Laboratory of Nasal Diseases,Beijing Institute of Otolaryngology,Beijing,100730,China.

Establish a correlation model with the true position of the foreign body in the esophageal foreign body surgery using the relevant diameter of the esophageal foreign body computed tomography(CT). Thirty-three patients who were diagnosed with esophageal foreign bodies by esophageal CT in the emergency department of the Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, were selected to measure the CT-related diameters of the esophageal tube(airway length, hyoid anterior edge-mandibular distance, incisor extension line-Posterior nasal ridge, distance from foreign body to hard jaw, distance from foreign body to incisor, front and back nasal crest line-spine line included angle, front and back nasal crest line and airway length line included angle, the lowest point of mandible-highest point of hyoid bone-and Spine angle), record the height and weight of the patient and calculate the body mass index(BMI). During the operation, the patient's head is fully tilted back, and the rigid esophagus is inserted through the mouth, and the front end of the esophagus is recorded when it touches a foreign body. The method of multivariate linear analysis was used to calculate the CT diameter that correlated with the distance between the foreign body and the incisor during the operation. The most common foreign body in the esophagus is jujube pit(14 cases), followed by fish bones(13 cases); the distance between the foreign body and the hard jaw, the incisor teeth measured by CT of the esophagus is less than the actual distance between the foreign body and the incisor during the operation(<0.001), the difference was statistically significant. Multiple linear regression analysis found that the patient's BMI(=0.037) and the distance of the foreign body from the hard jaw(<0.001) were correlated with the actual distance of the foreign body from the incisor during the operation. LR=3.708+0.130×BMI+0.857×Lct(cm), ²=0.736, adjusted ²=0.719. The distance between the foreign body and the hard jaw measured by esophageal CT combined with the patient's BMI can predict the distance of the foreign body during rigid esophagoscopic surgery under general anesthesia and provide a certain reference value for the detection of foreign body during the operation.
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http://dx.doi.org/10.13201/j.issn.2096-7993.2021.12.008DOI Listing
December 2021

Synthesis of a full range Fe-doped ZnFeCoO and its application as anode material for lithium-ion battery.

Dalton Trans 2021 Nov 2;50(42):15036-15046. Epub 2021 Nov 2.

School of Physics and Optoelectronics, South China University of Technology, Guangzhou, 510640, P. R. China.

Fe-Doped ZnFeCoO ( = 0.00, 0.17, 0.33, 0.47, 0.67, 0.87, 1.17, 1.37, 1.67, 1.87, 2.00) compounds were prepared by a sol-gel method. X-ray diffraction measurements show that Fe-doping does not change the crystal structure of ZnCoO and dopant Fe successfully occupies the 16c Co site. Because of the bigger radius of the doping ion, the cell parameters and cell volumes of ZnFeCoO compounds present an obvious linear increase with increasing Fe content. In addition, attributed to the similar crystal structures for ZnFeO and ZnCoO, a full range (0 ≤ ≤ 2) of ZnFeCoO solid solution phases was obtained. / measurement results show that a small Fe doping content obviously improved the electronic conductivity of the sample. In addition, due to the smaller particles size and uniform particle distribution caused by Fe doping, the lithium ion diffusion coefficient of the sample was increased by 2 orders of magnitude. Based on the improved electronic conductivity combined with the significantly increased lithium-ion diffusion coefficient, a sample with Fe doping content of = 0.33, ZnFeCoO, presents a high reversible specific capacity and excellent rate cycle stability. At a rate of 100 mA g, a relatively high discharge capacity of 850 mA h g can still be obtained after 100 cycles, which is obviously higher than that of pure ZnCoO (only 295 mA h g). Even at a higher discharge rate of 500 mA g, a discharge capacity of 450 mA h g with a capacity retention of nearly 100% was obtained. Based on its excellent electrochemical properties, ZnFeCoO will be a promising anode material for rechargeable lithium-ion batteries.
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http://dx.doi.org/10.1039/d1dt02865kDOI Listing
November 2021

Efficient propyne/propadiene separation by microporous crystalline physiadsorbents.

Nat Commun 2021 Oct 1;12(1):5768. Epub 2021 Oct 1.

College of Chemistry, Nankai University, Tianjin, 300071, People's Republic of China.

Selective separation of propyne/propadiene mixture to obtain pure propadiene (allene), an essential feedstock for organic synthesis, remains an unsolved challenge in the petrochemical industry, thanks mainly to their similar physicochemical properties. We herein introduce a convenient and energy-efficient physisorptive approach to achieve propyne/propadiene separation using microporous metal-organic frameworks (MOFs). Specifically, HKUST-1, one of the most widely studied high surface area MOFs that is available commercially, is found to exhibit benchmark performance (propadiene production up to 69.6 cm/g, purity > 99.5%) as verified by dynamic breakthrough experiments. Experimental and modeling studies provide insight into the performance of HKUST-1 and indicate that it can be attributed to a synergy between thermodynamics and kinetics that arises from abundant open metal sites and cage-based molecular traps in HKUST-1.
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http://dx.doi.org/10.1038/s41467-021-25980-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8486746PMC
October 2021

Transcriptomic profiling of the high-vigour maize (Zea mays L.) hybrid variety response to cold and drought stresses during seed germination.

Sci Rep 2021 09 29;11(1):19345. Epub 2021 Sep 29.

Maize Research Institute/College of Agronomy, Qingdao Agricultural University, Qingdao, 266109, China.

Abiotic stresses, including cold and drought, negatively affect maize (Zea mays L.) seed field emergence and later yield and quality. In order to reveal the molecular mechanism of maize seed resistance to abiotic stress at seed germination, the global transcriptome of high- vigour variety Zhongdi175 exposed to cold- and drought- stress was analyzed by RNA-seq. In the comparison between the control and different stressed sample, 12,299 differentially expressed genes (DEGs) were detected, of which 9605 and 7837 DEGs were identified under cold- and drought- stress, respectively. Functional annotation analysis suggested that stress response mediated by the pathways involving ribosome, phenylpropanoid biosynthesis and biosynthesis of secondary metabolites, among others. Of the obtained DEGs (12,299), 5,143 genes are common to cold- and drought- stress, at least 2248 TFs in 56 TF families were identified that are involved in cold and/or drought treatments during seed germination, including bHLH, NAC, MYB and WRKY families, which suggested that common mechanisms may be originated during maize seed germination in response to different abiotic stresses. This study will provide a better understanding of the molecular mechanism of response to abiotic stress during maize seed germination, and could be useful for cultivar improvement and breeding of high vigour maize cultivars.
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http://dx.doi.org/10.1038/s41598-021-98907-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8481303PMC
September 2021

Facile synthesis of one-dimensional vanadyl acetate nanobelts toward a novel anode for lithium storage.

Dalton Trans 2021 Sep 5;50(33):11568-11578. Epub 2021 Aug 5.

School of Physics, South China University of Technology, Guangzhou, 510640, P. R. China.

Transition metal oxides (TMOs) are prospective anode materials for lithium-ion batteries (LIBs), owing to their high theoretical specific capacity. However, the inherently low conductivity of TMOs restricts their application. The coupling of lithium-ion conducting polymer ligands with TMO structures is favorable for the dynamics of electrochemical processes. Herein, vanadyl acetate (VA) nanobelts, an organic-inorganic hybrid material, are synthesized for the first time as an anode material for LIBs. As a result, the VA nanobelt electrode displays an outstanding electrochemical performance, including a highly stable reversible specific capacity (around 1065 mA h g at 200 mA g), superior long-term cyclability (with a capacity of approximately 477 mA h g at 2 A g over 500 cycles) and attractive rate capability (1012 mA h g when the current density recovers to 200 mA g). In addition, scanning electron microscopy (SEM), cyclic voltammetry (CV) curves at different scanning rates and electrochemical impedance spectroscopy (EIS) are used to investigate the variation of the specific capacity and the electrochemical kinetic characteristics of the VA electrode during cycling in detail, respectively. Also, the structural variations of the VA electrode in the initial two cycles are also investigated by in situ XRD testing. The periodic evolution of the in situ XRD patterns demonstrates that the VA nanobelt electrode shows excellent reversibility for Li ion insertion/extraction. This work offers an enlightening insight into the future research into organo-vanadyl hybrids as advanced anode materials.
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http://dx.doi.org/10.1039/d1dt01930aDOI Listing
September 2021

Salient Region Guided Blind Image Sharpness Assessment.

Sensors (Basel) 2021 Jun 8;21(12). Epub 2021 Jun 8.

Key Laboratory of Convergent Media and Intelligent Technology (Communication University of China), Ministry of Education, Beijing 100024, China.

Salient regions provide important cues for scene understanding to the human vision system. However, whether the detected salient regions are helpful in image blur estimation is unknown. In this study, a salient region guided blind image sharpness assessment (BISA) framework is proposed, and the effect of the detected salient regions on the BISA performance is investigated. Specifically, three salient region detection (SRD) methods and ten BISA models are jointly explored, during which the output saliency maps from SRD methods are re-organized as the input of BISA models. Consequently, the change in BISA metric values can be quantified and then directly related to the difference in BISA model inputs. Finally, experiments are conducted on three Gaussian blurring image databases, and the BISA prediction performance is evaluated. The comparison results indicate that salient region input can help achieve a close and sometimes superior performance to a BISA model over the whole image input. When using the center region input as the baseline, the detected salient regions from the saliency optimization from robust background detection (SORBD) method lead to consistently better score prediction, regardless of the BISA model. Based on the proposed hybrid framework, this study reveals that saliency detection benefits image blur estimation, while how to properly incorporate SRD methods and BISA models to improve the score prediction will be explored in our future work.
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http://dx.doi.org/10.3390/s21123963DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8229120PMC
June 2021

The facile synthesis and electrochemical performance of NiVO as a novel anode material for lithium-ion batteries.

Dalton Trans 2021 Jun;50(21):7293-7304

School of Physics and Optoelectronics, South China University of Technology, Guangzhou, 510640, P. R. China.

The single-phase binary nickel vanadate Ni2V2O7 was successfully synthesized by a simple solid-state method to explore novel anode materials for lithium-ion batteries. After an activation process, the Ni2V2O7 electrode exhibited excellent electrochemical performance with a stable, high specific capacity of about 960 mA h g-1 at a current density of 100 mA g-1, which is attributed to the multiple valence states and the synergistic effect of the transition elements V and Ni. Even at a high current density of 2000 mA g-1, a stable specific capacity of about 400 mA h g-1 was still obtained. Considering the influence of the activation process on the electrochemical performance of the Ni2V2O7 electrode, we studied the origin of the excellent electrochemical performance, where the improved lithium diffusion coefficient and increased pseudocapacitive contribution caused by the activation process led to a significant improvement in the electrochemical performance, including rate capacity and cycle stability. By combining in situ X-ray diffraction (XRD) and ex situ X-ray photoelectron spectroscopy (XPS) methods, for the first time, we illustrate the detailed lithium storage mechanism of the Ni2V2O7 electrode during the lithium insertion/extraction process.
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http://dx.doi.org/10.1039/d1dt00983dDOI Listing
June 2021

In situ hydrothermal synthesis of double-carbon enhanced novel cobalt germanium hydroxide composites as promising anode material for sodium ion batteries.

Dalton Trans 2021 Mar 10;50(12):4288-4299. Epub 2021 Mar 10.

School of Physics, South China University of Technology, Guangzhou, 510640, P. R. China.

Germanium (Ge)-based materials are considered to be one of the most promising anode materials for sodium-ion batteries (SIBs). Nevertheless, the practical electrochemical performance is severely hampered by poor cyclability due to volumetric expansion of Ge upon cycling. Herein, double-carbon confined cobalt germanium hydroxide ([email protected]/rGO) composites has been facilely synthesized with the supportion of l-ascorbic acid and graphene oxide (GO) as anode materials for sodium-ion storage. As a result, the [email protected]/rGO anode delivers a high cyclic stability with a reversible capacity of 416 mA h g after 100 cycles at 100 mA g and an excellent rate capability of 206 mA h g at 2000 mA g compared with CGH, [email protected] and CGH/rGO composites. Besides, the reversible capacity of 266 mA h g still remained even after 500 cycles at current density of 1 A g. Such outstanding electrochemical performance could be accredited to a strong interaction between CGH, carbon, and graphene, which increases the electronic conductivity, relieves the volume expansion aroused by sodiation/desodiation, shortens the pathway of electron/ion transportation that further improving the reaction kinetics and endowing the material with remarkable cycling capability. Obviously, this in situ hydrothermal synthesis of double carbon coating strategy can be extended to designing other candidates of anode materials for SIBs.
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http://dx.doi.org/10.1039/d1dt00135cDOI Listing
March 2021

Characteristic gut microbiota and metabolic changes in patients with pulmonary tuberculosis.

Microb Biotechnol 2022 01 18;15(1):262-275. Epub 2021 Feb 18.

State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Centre for Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital,Zhejiang University School of Medicine, Hangzhou, 310003, China.

Intestinal flora provides an important contribution to the development of pulmonary tuberculosis (PTB). We performed a cross-sectional study in 52 healthy controls (HCs) and 83 patients with untreated active PTB to assess the differences in their microbiomic and metabolic profiles in faeces via V3-V4 16S rRNA gene sequencing and gas chromatography-mass spectrometry. Patients with PTB had considerable reductions in phylogenetic alpha diversity and the production of short-chain fatty acids, dysbiosis of the intestinal flora and alterations in the faecal metabolomics composition compared with HCs. Significant alterations in faecal metabolites were associated with changes in the relative abundance of specific genera. Our study describes the imbalance of the gut microbiota and altered faecal metabolomics profiles in patients with PTB; the results indicate that the gut microbiota and faecal metabolomic profiles can be used as potential preventive and therapeutic targets for PTB.
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http://dx.doi.org/10.1111/1751-7915.13761DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8719804PMC
January 2022

Information Fusion Based on Complementary Filter for SINS/CNS/GPS Integrated Navigation System of Aerospace Plane.

Sensors (Basel) 2020 Dec 15;20(24). Epub 2020 Dec 15.

School of Automation, Northwestern Polytechnical University, Xi'an 710129, China.

In order to solve the problems of heavy computational load and poor real time of the information fusion method based on the federated Kalman filter (FKF), a novel information fusion method based on the complementary filter is proposed for strapdown inertial navigation (SINS)/celestial navigation system (CNS)/global positioning system (GPS) integrated navigation system of an aerospace plane. The complementary filters are designed to achieve the estimations of attitude, velocity, and position in the SINS/CNS/GPS integrated navigation system, respectively. The simulation results show that the proposed information fusion method can effectively realize SINS/CNS/GPS information fusion. Compared with FKF, the method based on complementary filter (CF) has the advantages of simplicity, small calculation, good real-time performance, good stability, no need for initial alignment, fast convergence, etc. Furthermore, the computational efficiency of CF is increased by 94.81%. Finally, the superiority of the proposed CF-based method is verified by both the semi-physical simulation and real-time system experiment.
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http://dx.doi.org/10.3390/s20247193DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7765422PMC
December 2020

QTL Analysis and Fine Mapping of a Major QTL Conferring Kernel Size in Maize ().

Front Genet 2020 27;11:603920. Epub 2020 Nov 27.

College of Agronomy, Qingdao Agricultural University, Qingdao, China.

Kernel size is an important agronomic trait for grain yield in maize. The purpose of this study is to map QTLs and predict candidate genes for kernel size in maize. A total of 199 F and its F lines from the cross between SG5/SG7 were developed. A composite interval mapping (CIM) method was used to detect QTLs in three environments of F and F populations. The result showed that a total of 10 QTLs for kernel size were detected, among which were five QTLs for kernel length (KL) and five QTLs for kernel width (KW). Two stable QTLs, , and , were mapped in all three environments. Three QTLs, , and , were overlapped with the QTLs identified from previous studies. In order to validate and fine map , near-isogenic lines (NILs) were developed by continuous backcrossing between SG5 as the donor parent and SG7 as the recurrent parent. Marker-assisted selection was conducted from BCF generation with molecular markers near . A secondary linkage map with six markers around the region was developed and used for fine mapping of Finally, was confirmed in a 1.95 Mb physical interval with selected overlapping recombinant chromosomes on maize chromosome 9 by blasting with the Zea_Mays_B73 v4 genome. Transcriptome analysis showed that a total of 11 out of 40 protein-coding genes differently expressed between the two parents were detected in the identified interval. GRMZM2G006080 encoding a receptor-like protein kinase FERONIA, was predicted as a candidate gene to control kernel size. The work will not only help to understand the genetic mechanisms of kernel size of maize but also lay a foundation for further fine mapping and even cloning of the promising loci.
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http://dx.doi.org/10.3389/fgene.2020.603920DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7728991PMC
November 2020

A Novel Alignment Method for SINS with Large Misalignment Angles Based on EKF2 and AFIS.

Sensors (Basel) 2020 Oct 22;20(21). Epub 2020 Oct 22.

School of Automation, Northwestern Polytechnical University, Xi'an 710129, China.

In order to achieve the fine alignment of strapdown inertial navigation (SINS) under large misalignment angles, a novel filtering alignment method is proposed based on the second-order extended Kalman filter (EKF2) and adaptive fuzzy inference system (AFIS). Firstly, the quaternion is employed to represent the attitude errors of SINS. A second-order nonlinear state equation is made based on the nonlinear velocity error model and attitude error model, and the linear measurement equation is based on the velocity outputs from SINS. Then, the filtering scheme is designed based on EKF2 and AFIS. The error estimation and fine alignment can be achieved by using the proposed filtering scheme. The results of Monte Carlo Simulation show that the errors of pitch, roll and yaw misalignment angles quickly decrease to about 14″, 15″ and 7.62' respectively in 350 s under the condition of any misalignment angles with pitch error from -40° to 40°, roll error from -40° to 40°, and yaw error from -50° to 50°. Even when the initial misalignment angles are all very large such as (80°, 120°, 170°), the proposed nonlinear alignment method still can converge normally by utilizing the adaptive fuzzy inference system (AFIS) to adjust the covariance matrix . Finally, the turntable experiment was performed, and the effectiveness and superiority of the proposed method were further verified by compared with other nonlinear methods.
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http://dx.doi.org/10.3390/s20215975DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7659939PMC
October 2020

Electrochemically Induced Structural and Morphological Evolutions in Nickel Vanadium Oxide Hydrate Nanobelts Enabling Fast Transport Kinetics for High-Performance Zinc Storage.

ACS Appl Mater Interfaces 2020 Jun 18;12(22):24726-24736. Epub 2020 May 18.

School of Physics, South China University of Technology, Guangzhou 510640, PR China.

Suitable intercalation cathodes and fundamental insights into the Zn-ion storage mechanism are the crucial factors for the booming development of aqueous zinc-ion batteries. Herein, a novel nickel vanadium oxide hydrate (NiVO·0.88HO) is synthesized and investigated as a high-performance electrode material, which delivers a reversible capacity of 418 mA h g with 155 mA h g retained at 20 A g and a high capacity of 293 mA h g in long-term cycling at 10 A g with 77% retention after 10,000 cycles. More importantly, multistep phase transition and chemical-state change during intercalation/deintercalation of hydrated Zn are illustrated in detail via in situ/ex situ analytical techniques to unveil the Zn storage mechanism of the hydrated and layered vanadium oxide bronze. Furthermore, morphological development from nanobelts to hierarchical structures during rapid ion insertion and extraction is demonstrated and a self-hierarchical process is correspondingly proposed. The unique evolutions of structure and morphology, together with consequent fast Zn transport kinetics, are of significance to the outstanding zinc storage capacity, which would enlighten the mechanism exploration of the aqueous rechargeable batteries and push development of vanadium-based cathode materials.
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http://dx.doi.org/10.1021/acsami.0c04199DOI Listing
June 2020

Hierarchically Porous Carbon Derived from Biomass Reed Flowers as Highly Stable Li-Ion Battery Anode.

Nanomaterials (Basel) 2020 Feb 18;10(2). Epub 2020 Feb 18.

School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, China.

As lithium-ion battery (LIB) anode materials, porous carbons with high specific surface area are highly required because they can well accommodate huge volume expansion/contraction during cycling. In this work, hierarchically porous carbon (HPC) with high specific surface area (~1714.83 m g) is synthesized from biomass reed flowers. The material presents good cycling stability as an LIB anode, delivering an excellent reversible capacity of 581.2 mAh g after cycling for 100 cycles at a current density of 100 mA g, and still remains a reversible capacity of 298.5 mAh g after cycling for 1000 cycles even at 1000 mA g. The good electrochemical performance can be ascribed to the high specific surface area of the HPC network, which provides rich and fast paths for electron and ion transfer and provides large contact area and mutual interactions between the electrolyte and active materials. The work proposes a new route for the preparation of low cost carbon-based anodes and may promote the development of other porous carbon materials derived from various biomass carbon sources.
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http://dx.doi.org/10.3390/nano10020346DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7075112PMC
February 2020

A Corrole-Based Covalent Organic Framework Featuring Desymmetrized Topology.

Angew Chem Int Ed Engl 2020 03 3;59(11):4354-4359. Epub 2020 Feb 3.

Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, FL, 33620, USA.

Herein, for the first time, we present the successful synthesis of a novel two-dimensional corrole-based covalent organic framework (COF) by reacting the unusual approximately T-shaped 5,10,15-tris(p-aminophenyl)corrole H TPAPC with terephthalaldehyde, which adopts desymmetrized hcb topology and consists of a staggered AB stacking structure with elliptical pores. The resultant corrole-based COF, TPAPC-COF, exhibits high crystallinity and excellent chemical stability. The combination of extended π-conjugated backbone and interlayer noncovalent π-π interactions endows TPAPC-COF with excellent absorption capability in the entire visible-light and even near-infrared regions. Moreover, this work suggests the promise of TPAPC-COF as a new class of photoactive material for efficient singlet-oxygen generation with potential photodynamic therapy application as demonstrated by in vitro anticancer studies.
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http://dx.doi.org/10.1002/anie.201915569DOI Listing
March 2020

Mapping quantitative trait loci for yield-related traits and predicting candidate genes for grain weight in maize.

Sci Rep 2019 11 6;9(1):16112. Epub 2019 Nov 6.

College of Agronomy, Qingdao Agricultural University, Qingdao, 266109, P.R. China.

Quantitative trait loci (QTLs) mapped in different genetic populations are of great significance for marker-assisted breeding. In this study, an F population were developed from the crossing of two maize inbred lines SG-5 and SG-7 and applied to QTL mapping for seven yield-related traits. The seven traits included 100-kernel weight, ear length, ear diameter, cob diameter, kernel row number, ear weight, and grain weight per plant. Based on an ultra-high density linkage map, a total of thirty-three QTLs were detected for the seven studied traits with composite interval mapping (CIM) method, and fifty-four QTLs were indentified with genome-wide composite interval mapping (GCIM) methods. For these QTLs, Fourteen were both detected by CIM and GCIM methods. Besides, eight of the thirty QTLs detected by CIM were identical to those previously mapped using a F population (generating from the same cross as the mapping population in this study), and fifteen were identical to the reported QTLs in other recent studies. For the fifty-four QTLs detected by GCIM, five of them were consistent with the QTLs mapped in the F population of SG-5 × SG-7, and twenty one had been reported in other recent studies. The stable QTLs associated with grain weight were located on maize chromosomes 2, 5, 7, and 9. In addition, differentially expressed genes (DEGs) between SG-5 and SG-7 were obtained from the transcriptomic profiling of grain at different developmental stages and overlaid onto the stable QTLs intervals to predict candidate genes for grain weight in maize. In the physical intervals of confirmed QTLs qKW-7, qEW-9, qEW-10, qGWP-6, qGWP-8, qGWP-10, qGWP-11 and qGWP-12, there were 213 DEGs in total. Finally, eight genes were predicted as candidate genes for grain size/weight. In summary, the stable QTLs would be reliable and the candidate genes predicted would be benefit for maker assisted breeding or cloning.
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http://dx.doi.org/10.1038/s41598-019-52222-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6834572PMC
November 2019

Robust Corrole-Based Metal-Organic Frameworks with Rare 9-Connected Zr/Hf-Oxo Clusters.

J Am Chem Soc 2019 09 3;141(36):14443-14450. Epub 2019 Sep 3.

Department of Chemistry , University of South Florida , Tampa , Florida 33620 , United States.

The corrole unit from the porphyrinoid family represents one of the most important ligands in the field of coordination chemistry, which creates a unique environment allowing for the observation of unusual electronic states of bound metal cations and has shown great promise in various applications. Nevertheless, studies that directly and systematically introduce these motifs in porous crystalline materials for targeting further functionalizations are still lacking. Herein, we report for the first time the construction of two robust corrole-based metal-organic frameworks (MOFs), M(μ-O)(μ-OH)(OH)(HO)(HTCPC) (M = Zr for and M = Hf for , HTCPC = 5,10,15-tris(-carboxylphenyl)corrole), which are assembled by a custom-designed -symmetric corrolic tricarboxylate ligand and the unprecedented -symmetric 9-connected Zr/Hf clusters. The resultant frameworks feature a rare (3,9)-connected net and exhibit high chemical stability in aqueous solutions within a wide range of pH values. Furthermore, we successfully prepared the cationic from the iron corrole ligand, which can serve as an efficient heterogeneous catalyst for [4 + 2] hetero-Diels-Alder reactions between unactivated aldehydes and a simple diene, outperforming both the homogeneous counterpart and the porphyrinic MOF counterpart.
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http://dx.doi.org/10.1021/jacs.9b07700DOI Listing
September 2019

HLA-II genes are associated with outcomes of specific immunotherapy for allergic rhinitis.

Int Forum Allergy Rhinol 2019 11 12;9(11):1311-1317. Epub 2019 Jul 12.

Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, China.

Background: Although the precise mechanisms underlying the efficacy of allergen-specific immunotherapy (AIT) are not clear, some evidence suggests that this may be linked to polymorphisms in HLA-II gene. We aimed to investigate the correlation between HLA-II gene polymorphisms and house dust mite (HDM)-specific immunotherapy efficacy, and evaluate specific polymorphisms as potential biomarkers in allergic rhinitis (AR) patients who would benefit most from AIT.

Methods: Fifty-one Han Chinese patients with AR receiving HDM AIT were recruited. Genomic DNA was extracted from venous blood samples and genotyped for HLA-DRB1 and HAL-DQB1 alleles using the polymerase chain reaction sequence-based genotyping method. Nasal and eye symptoms were investigated based on visual analogue scale and rhinoconjunctivitis quality of life.

Results: Allele DRB1*04:06; DRB1*14:05 showed a positive correlation with improvements in nasal blockage, nasal itching, eye itching, and activities. Similarly, DQB1*03:02:01; DQB1*05:03: 01 was positively correlated with improvements in nose blocking, nasal itching, eye itching, behavioral problems, and nasal symptoms scores; and DRB1*03:01; DRB1*04:06 positively correlated with nasal symptoms scores. In contrast, DRB1*07:01:01; DRB1*11:01 was negatively correlated with non-pollen symptoms, behavioral problems, and nasal symptoms.

Conclusion: HLA-DRB1 and HLA-DQB1 gene polymorphism are associated with AIT efficacy in HDM-sensitive Chinese patients with AR, of which DRB1*03:01; DRB1*04:06 and DQB1*03:02:01; DQB1*05:03:01 may be useful biomarkers of AR patient candidacy for effective AIT.
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http://dx.doi.org/10.1002/alr.22384DOI Listing
November 2019

In-situ Grown SnO Nanospheres on Reduced GO Nanosheets as Advanced Anodes for Lithium-ion Batteries.

ChemistryOpen 2019 Jun 7;8(6):712-718. Epub 2019 May 7.

Department of Physics South China University of Technology Guangzhou 510641 China.

Nanostructured tin dioxide (SnO) has emerged as a promising anode material for lithium-ion batteries (LIBs) due to its high theoretical capacity (1494 mA h g) and excellent stability. Unfortunately, the rapid capacity fading and poor electrical conductivity of bulk SnO material restrict its practical application. Here, SnO nanospheres/reduced graphene oxide nanosheets (SRG) are fabricated through growth of carbon-coated SnO using template-based approach. The nanosheet structure with the external layer of about several nanometers thickness can not only accommodate the volume change of Sn lattice during cycling but also enhance the electrical conductivity effectively. Benefited from such design, the SRG composites could deliver an initial discharge capacity of 1212.3 mA h g at 0.1 A g, outstanding cycling performance of 1335.6 mA h g after 500 cycles at 1 A g, and superior rate capability of 502.1 mA h g at 5 A g after 10 cycles. Finally, it is believed that this method could provide a versatile and effective process to prepare other metal-oxide/reduced graphene oxide (rGO) 2D nanocomposites.
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http://dx.doi.org/10.1002/open.201900120DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6587327PMC
June 2019

Perceptions of patient safety culture among medical students: a cross-sectional investigation in Heilongjiang Province, China.

BMJ Open 2018 07 12;8(7):e020200. Epub 2018 Jul 12.

Department of Social Medicine, School of Public Health, Harbin Medical University, Harbin, China.

Objectives: Medical school education plays an important role in promoting patient safety. In this study, we assess medical students' perceptions of patient safety culture, identify their educational needs and provide evidence on the most important content relating to patient safety for the medical school curriculum.

Method: This cross-sectional study was conducted in four medical universities in Heilongjiang province. Medical students in the first through five years completed an anonymous questionnaire-the Attitudes toward Patient Safety Questionnaire III. We analysed the differences in responses across the four universities and their cohorts.

Results: The overall perceptions of patient safety culture across the four medical universities were positive. The highest positive response rate was for 'I have a good understanding of patient safety issues as a result of my undergraduate medical training' (range: 58.4%-99.8%), whereas the lowest positive response rate was for 'medical errors are a sign of incompetence' (14.7%-47.9%). Respondents in the earlier years of school tended to have more positive responses for items concerning working hours and team work; however, fourth and fifth year students had more positive responses for error inevitability. Items with the lowest positive response rates across the cohorts included items related to 'professional incompetence as a cause of error' and 'disclosure responsibility'.

Conclusions: While students generally had positive views of patient safety culture, none of them had been exposed to any formal curriculum content on patient safety. Policymakers should focus more on how educational needs vary across schools and cohorts in order to establish appropriate curricula.
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http://dx.doi.org/10.1136/bmjopen-2017-020200DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6082492PMC
July 2018

Perceptions of patient safety culture among healthcare employees in tertiary hospitals of Heilongjiang province in northern China: a cross-sectional study.

Int J Qual Health Care 2018 Oct;30(8):618-623

Endocrine and Metabolic Diseases, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China.

Objective: Assessing the patient safety culture is necessary for improving patient safety. Research on patient safety culture has attracted considerable attention. Currently, there is little research on patient safety culture in China generally, and in Heilongjiang in northern China specifically. The aim of the study is to explore the perception of healthcare employees about patient safety culture and to determine whether perception differs per sex, age, profession, years of experience, education level and marital status.

Design: Cross-sectional study.

Setting: Thirteen tertiary hospitals in Heilongjiang, northern China.

Participants: About 1024 healthcare employees.

Main Outcome Measure: The perception of healthcare employees was measured using the safety attitude questionnaire, which include six dimensions. Higher scores represented more positive attitudes. An analysis of variance was used to compare socio-demographic differences per position, marital status and education; t-tests were used for sex, age and experience.

Results: A total of 1024 (85.33%) valid questionnaires were returned. The mean score of the six dimensions was 73.74/100; work conditions (80.19) had the highest score of all the dimensions, and safety climate (70.48) had the lowest. Across distinct dimensions, there were significant differences in perceptions of patient safety culture per sex, age, years of experience, position, marital status and education level (P < 0.05).

Conclusions: The findings can help in assessing perceived patient safety culture among healthcare employees and identifying dimensions that require improvement. Interventions aimed at specific socio-demographic groups are necessary to improve patient safety culture.
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http://dx.doi.org/10.1093/intqhc/mzy084DOI Listing
October 2018

A 3D interconnected [email protected] nanocomposite with superior sodium storage properties.

Nanoscale 2018 Apr;10(15):6992-7001

School of Material Science and Engineering, South China University of Technology, China.

A novel 3D interconnected [email protected] nanocomposite was in situ synthesized through a facile hydrothermal reaction at low temperature (98 °C), and its electrochemical performance as a cathode for sodium-ion batteries (SIBs) was investigated for the first time. Under the intercalation of Fe3+ and carbon-coating, as-prepared samples turned to 3D interconnected structures, which were composed of NH4Fe0.6V2.4O7.4 nanoparticles and carbon chains. The 3D interconnected [email protected] wt%C nanocomposite exhibits a high discharge specific capacity of 306 mA h g-1 at a current density of 20 mA g-1 and a high-rate capacity of 130 mA h g-1 at 0.4 A g-1. The results of EIS and ex situ SEM indicated that the 3D interconnected [email protected] wt%C nanocomposite possesses good electrical conductivity and structural stability. The ex situ XRD results suggest that [email protected] wt%C undergoes a reversible insertion/de-insertion mechanism during a charge/discharge process. Our work demonstrates that the 3D interconnected [email protected] nanocomposite material could be considered as a potential cathode for sodium ion batteries.
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http://dx.doi.org/10.1039/c7nr09146jDOI Listing
April 2018

Hard Carbon Wrapped NaV(PO)@C Porous Composite Extending Cycling Lifespan for Sodium-Ion Batteries.

ACS Appl Mater Interfaces 2017 Dec 14;9(51):44485-44493. Epub 2017 Dec 14.

School of Physics and ‡School of Material Science and Engineering, South China University of Technology , Guangzhou 510640, P. R. China.

Although the NASICON-type of NaV(PO) is regarded as a potential cathode candidate for advanced sodium-ion batteries (SIBs), it has an undesirable rate performance and low cyclability, which are a result of its poor electronic conductivity. Here, we utilized conductive polyaniline (PANI) grown in situ to obtain the hard carbon-coated porous NaV(PO)@C composite ([email protected]@HC) with a typically simple and effective sol-gel process. Based on the restriction of double carbon layers, the NVP size decreases distinctly, which can curtail the sodium-ion diffusion distance and enhance the electronic conductivity. As expected, the product displays good discharge capacity (111.6 mA h g at 1 C), outstanding rate capacity (60.4 mA h g at 50 C), and remarkable cycling stability (63.3 mA h g with a retention of 83.3% at 40 C over 3000 cycles). Also, it performs a long-term cycling capacity of 58.5 mA h g exceeding 15 000 cycles at 20 C (with a capacity loss of 0.24% per cycle).
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http://dx.doi.org/10.1021/acsami.7b14006DOI Listing
December 2017

MicroRNA-154/ADAM9 axis inhibits the proliferation, migration and invasion of breast cancer cells.

Oncol Lett 2017 Dec 21;14(6):6969-6975. Epub 2017 Sep 21.

Department of General Surgery, Binzhou Medical University Hospital, Binzhou, Shandong 256603, P.R. China.

Breast cancer is the leading cause for cancer-associated mortality in women. Although great progress has been made in the earlier diagnosis and systemic therapy of patients with breast cancer in recent years, recurrence or distant metastasis continue to present major barriers to the successful treatment of breast cancer. Therefore, fully understanding the molecular mechanisms underlying the progression of breast cancer may be critical for the development of effective therapeutic strategies against breast cancer. The aim of the present study was to explore the expression, function and molecular mechanisms of microRNA-154 (miR-154) in human breast cancer. It was demonstrated that miR-154 was significantly downregulated in breast cancer tissue and cell lines. The restoration of miR-154 expression suppressed the proliferation, migration and invasion of breast cancer cells. ADAM metallopeptidase domain 9 (ADAM9) was identified as a novel direct target for miR-154 in breast cancer. It was demonstrated that miR-154 acted as a tumor suppressor in breast cancer by targeting ADAM9. The results of the present study suggest that the restoration of miR-154 expression may be an effective therapeutic strategy for the treatment of breast cancer in the future.
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http://dx.doi.org/10.3892/ol.2017.7021DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5686518PMC
December 2017

Extracellular Vesicles Released by Cardiomyocytes in a Doxorubicin-Induced Cardiac Injury Mouse Model Contain Protein Biomarkers of Early Cardiac Injury.

Clin Cancer Res 2018 04 25;24(7):1644-1653. Epub 2017 Oct 25.

Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, Kentucky.

Cardiac injury is a major cause of death in cancer survivors, and biomarkers for it are detectable only after tissue injury has occurred. Extracellular vesicles (EV) remove toxic biomolecules from tissues and can be detected in the blood. Here, we evaluate the potential of using circulating EVs as early diagnostic markers for long-term cardiac injury. Using a mouse model of doxorubicin (DOX)-induced cardiac injury, we quantified serum EVs, analyzed proteomes, measured oxidized protein levels in serum EVs released after DOX treatment, and investigated the alteration of EV content. Treatment with DOX caused a significant increase in circulating EVs (DOX_EV) compared with saline-treated controls. DOX_EVs exhibited a higher level of 4-hydroxynonenal adducted proteins, a lipid peroxidation product linked to DOX-induced cardiotoxicity. Proteomic profiling of DOX_EVs revealed the distinctive presence of brain/heart, muscle, and liver isoforms of glycogen phosphorylase (GP), and their origins were verified to be heart, skeletal muscle, and liver, respectively. The presence of brain/heart GP (PYGB) in DOX_EVs correlated with a reduction of PYGB in heart, but not brain tissues. Manganese superoxide dismutase (MnSOD) overexpression, as well as pretreatment with cardioprotective agents and MnSOD mimetics, resulted in a reduction of EV-associated PYGB in mice treated with DOX. Kinetic studies indicated that EVs containing PYGB were released prior to the rise of cardiac troponin in the blood after DOX treatment, suggesting that PYGB is an early indicator of cardiac injury. EVs containing PYGB are an early and sensitive biomarker of cardiac injury. .
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http://dx.doi.org/10.1158/1078-0432.CCR-17-2046DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6193451PMC
April 2018

Mo Doping in LiVO Anode for Li-Ion Batteries: Significantly Improve the Reversible Capacity and Rate Performance.

ACS Appl Mater Interfaces 2017 Aug 9;9(33):27688-27696. Epub 2017 Aug 9.

Department of Physics, South China University of Technology , Guangzhou, 510640, P. R. China.

Consider the almost insulator for pure LiVO with a band gap of 3.77 eV, to significantly improve the electrical conductivity, the novel LiVMoO (x = 0.00, 0.01, 0.02, 0.05, and 0.10) anode materials were prepared successfully by simple sol-gel method. Our calculations show that, by substitute Mo for V, the extra electron occupied the V 3p empty orbital and caused the Fermi level shift up into the conduction band, where the Mo-doped LiVO presents electrical conductor. The V/I curve measurements show that, by Mo doping in V site, the electronic conductivity of the LiVO was increased by 5 orders of magnitude. And thence the polarization was obviously reduced. EIS measurement results indicated that by Mo-doping a higher lithium diffusion coefficient can be obtained. The significantly increased electronic conductivity combined the higher lithium diffusion coefficient leads to an obvious improvement in reversible capacity and rate performance for the Mo-doped LiVO. The resulting LiVMoO (x = 0.01) material exhibited the excellent rate capability. At a high rate 5 C, a big discharge capacity of the initial discharge capacity 439 mAh/g can be obtained, which is higher than that of pure LiVO (only 166 mAh/g), and after 100 cycles the mean capacity fade is only 0.06% per cycle.
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http://dx.doi.org/10.1021/acsami.7b06459DOI Listing
August 2017
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