2021 journal article

Modeling the Triboelectric Behaviors of Elastomeric Nonwoven Fabrics

Advanced Materials, 11, 2106429.

By: Y. Wang  n, E. Shim n , N. He  n, B. Pourdeyhimi  n & W. Gao  n

author keywords: maximum transferred charge density; meltblown nonwovens; nonwoven structural features; triboelectric nanogenerators
TL;DR: This model shows good prediction power while suggesting that the triboelectric output of nonwoven-based TENGs reaches a maximum in conductor-to-dielectric contact-mode at a specific thickness, solidity, or average fiber diameter when other structural features are fixed. (via Semantic Scholar)
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Source: ORCID
Added: October 21, 2021

AbstractTheoretical 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, an analytical model is introduced 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 nonwoven samples are fabricated through a melt‐blowing process to map nonwoven structural features within certain ranges, while an ion‐injection protocol is adopted to quantify the triboelectric output with superior consistency and reproducibility. With a database containing structural features and triboelectric output of 43 nonwoven samples, a good model fitting is achieved via nonlinear regression analysis in Python, which also shows good predictive power and suggests the existing of tribo‐output maxima at a specific thickness, solidity, or average fiber diameter when other structural parameters are fixed. The model is also successfully applied to a group of polypropylene meltblown nonwovens, which verifies its universality on meltblown‐nonwoven‐based TENGs.