Adv Mater 2021 Oct 19:e2106429. Epub 2021 Oct 19.
Department of Textile Engineering, Chemistry & Science, Wilson College of Textiles, North Carolina State University, 1020 Main Campus Dr, Raleigh, NC, 27606, USA.
Theoretical modeling of triboelectric nanogenerators (TENGs) is fundamental to their performance optimization, since it can provide useful guidance on the material selection, structure design, and parameter control of relevant systems. Built on the theoretical model of film-based TENGs, here we introduce an analytical model for conductor-to-dielectric contact-mode nonwoven-based TENGs, which copes with the unique hierarchical structure of nonwovens and details the correlation between the triboelectric output (maximum transferred charge density) and nonwoven structural parameters (thickness, solidity, and average fiber diameter). A series of styrene-ethylene-butylene-styrene (SEBS, Kraton MD1653) nonwoven samples have been fabricated through the melt-blowing process in a pilot-plant setting to map elastomeric nonwoven structural features within certain ranges, while an ion-injection testing protocol is adopted to quantify the triboelectric output with superior consistency and reproducibility. Read More