Publications by authors named "Xirong Lin"

6 Publications

  • Page 1 of 1

A novel free-standing metal organic frameworks-derived cobalt sulfide polyhedron array for shuttle effect suppressive lithium-sulfur batteries.

Nanotechnology 2021 Nov 24. Epub 2021 Nov 24.

Chinese Academy of Sciences - Intelligent Machines Institute, Science Island 1130 M B, Hefei 230026, Hefei, 230031, CHINA.

Metal-organic-foams (MOFs)-derived nanostructures have received broad attention for secondary batteries. However, common strategies are focusing on the preparation of dispersive materials, which need complicated steps and some additives for making electrodes of batteries. Here, we develop a novel free-standing Co9S8 polyhedron array derived from ZIF-67, which grows on a three-dimensional carbon cloth for lithium-sulfur (Li-S) battery. The polar Co9S8 provides strong chemical binding to immobilize polysulfides, which enables efficiently suppressing of the shuttle effect. The free-standing [email protected] polyhedron array-based cathode exhibits ultrahigh capacity of 1079 mAh g-1 after cycling 100 times at 0.1C, and long cycling life of 500 cycles at 1C, recoverable rate-performance and good temperature tolerance. Furthermore, the adsorption energies towards polysulfides are investigated by using density functional theory (DFT) calculations, which display a strong binding with polysulfides.
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http://dx.doi.org/10.1088/1361-6528/ac3ce5DOI Listing
November 2021

General Liquid-Driven Coaxial Flow Focusing Preparation of Novel Microcapsules for Rechargeable Magnesium Batteries.

Adv Sci (Weinh) 2021 Jan 27;8(2):2002298. Epub 2020 Nov 27.

National Key Laboratory of Science and Technology on Micro/Nano Fabrication Key Laboratory for Thin Film and Microfabrication of Ministry of Education Department of Micro/Nano-electronics Shanghai Jiao Tong University Shanghai 200240 P. R. China.

Magnesium batteries have been considered promising candidates for next-generation energy storage systems owing to their high energy density, good safety without dendrite formation, and low cost of magnesium resources. However, high-performance cathodes with stable capacity, good conductivity, and fast ions transport are needed, since many conventional cathodes possess a low performance and poor preparation controllability. Herein, a liquid-driven coaxial flow focusing (LDCFF) approach for preparing a novel microcapsule system with controllable size, high loading, and stable magnesium-storage performance is presented. Taking the MoS-infilled microcapsule as a case study, the magnesium battery cathode based on the microcapsules displays a capacity of 100 mAh g after 100 cycles. High capacity retention is achieved at both low and high temperatures of -10, ‒5, and 45 °C, and a stable rate-performance is also obtained. The influences of the liquid flow rates on the size and shell thickness of the microcapsules are investigated; and electron and ion diffusion properties are also studied by first-principle calculations. The presented LDCFF method is quite general, and the high performance of the microcapsules enables them to find broad applications for making emerging energy-storage materials and secondary battery systems.
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http://dx.doi.org/10.1002/advs.202002298DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7816708PMC
January 2021

An oriented laterally-growing NiCoO nanowire array on a FeO microdisc as a high-capacity and excellent rate-performance secondary battery anode.

Chem Commun (Camb) 2020 Feb;56(17):2618-2621

Key Laboratory for Thin Film and Micro Fabrication of the Ministry of Education, Department of Micro/Nano Electronics, Shanghai Jiao Tong University, Shanghai 200240, P. R. China and Center for High-Performance Computing, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.

A novel hierarchical composite consisting of an ordered NiCo2O4 nanowire array growing on the lateral side of a Fe2O3 microdisc is presented, which was confirmed by X-ray holography technology on a synchrotron radiation station. The composite-based Li-ion battery anode exhibits a high capacity of 1528 mA h g-1 after 200 cycles at 0.2C, a recoverable rate-performance after repeated tests, and robust mechanical properties.
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http://dx.doi.org/10.1039/d0cc00553cDOI Listing
February 2020

An artificial sea urchin with hollow spines: improved mechanical and electrochemical stability in high-capacity Li-Ge batteries.

Nanoscale 2020 Mar 24;12(10):5812-5816. Epub 2020 Jan 24.

Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P.R. China.

Metallic germanium (Ge) as the anode can deliver a high specific capacity and high rate capability in lithium ion batteries. However, the large volume expansion largely restrains its further application. Herein, we constructed a three-dimensional sea urchin structure consisting of double layered Ge/TiO nanotubes as the spines via a ZnO template-removing method, which displays a capacity as high as 1060 mA h g over 130 cycles. The robust, hollow oxide backbone serves as a strong support to accommodate the morphological change of Ge while the enhanced electron-transfer kinetics is attributed to the Ge content and the intimate contact between Ge and TiO during charging/discharging, which were confirmed using in situ transmission electronic microscopy observations and first-principles simulations. In addition, a high capacity retention of batteries using this hybrid composite as the anode was also achieved at low temperature.
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http://dx.doi.org/10.1039/c9nr09107fDOI Listing
March 2020

A bee pupa-infilled honeycomb structure-inspired LiMnSiO cathode for high volumetric energy density secondary batteries.

Chem Commun (Camb) 2019 Mar;55(25):3582-3585

Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, P. R. China.

Emerging power batteries with both high volumetric energy density and fast charge/discharge kinetics are required for electric vehicles. The rapid ion/electron transport of mesostructured electrodes enables a high electrochemical activity in secondary batteries. However, the typical low fraction of active materials leads to a low volumetric energy density. Herein, we report a novel biomimetic "bee pupa infilled honeycomb"-structured 3D mesoporous cathode. We found previously the maximum active material filing fraction of an opal template before pinch-off was about 25%, whereas it could be increased to ∼90% with the bee pupa-infilled honeycomb-like architecture. Importantly, even with a high infilling fraction, fast Li+/e- transport kinetics and robust mechanical property were achievable. As the demonstration, a bee pupa infilled honeycomb-shaped Li2MnSiO4/C cathode was constructed, which delivered a high volumetric energy density of 2443 W h L-1. The presented biomimetic bee pupa infilled honeycomb configuration is applicable for a broad set of both cathodes and anodes in high energy density batteries.
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http://dx.doi.org/10.1039/c9cc00729fDOI Listing
March 2019

A novel tin hybrid nano-composite with double nets of carbon matrixes as a stable anode in lithium ion batteries.

Chem Commun (Camb) 2017 Dec;53(98):13125-13128

Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P. R. China.

A novel battery hybrid composite anode consisting of tin nanoparticles encapsulated by double nets of carbon matrixes is presented. The improved electron transfer and volume change accommodation are confirmed via density functional theory modeling and in situ transmission electron microscopy observations, respectively.
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http://dx.doi.org/10.1039/c7cc08109jDOI Listing
December 2017
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