摩擦电效应
材料科学
结晶度
纳米技术
电介质
碳纳米管
纳米发生器
光电子学
复合材料
压电
作者
Zehao Fang,Weitao Lou,Wenxi Zhang,Xuefei Guan,Jingjing He,Jing Lin
出处
期刊:Nano Energy
[Elsevier]
日期:2023-12-01
卷期号:117: 108923-108923
被引量:2
标识
DOI:10.1016/j.nanoen.2023.108923
摘要
Triboelectric nanogenerators hold great promise as a sustainable energy solution, with natural biopolymers offering eco-friendly options for their development. However, biopolymers often exhibit lower triboelectric properties than synthetic polymers. Herein, a novel strategy is proposed to modulate the triboelectric polarity and enhance the performance of chitosan films by manipulating their crystallinity and incorporating single-walled carbon nanotubes. It was found that the crystalline structure changed the electron affinity of the surface state with molecular chain arrangement, and proper carbon nanotubes improved the dielectric properties and the balance with the leakage current effect. Through the modulation of crystallinity and nanofillers, various triboelectric properties can be achieved theoretically. Consequently, the charge density of the optimized performance reached 262 μC m−2, 2.45 times that of the pure chitosan film. Furthermore, the device presents long-term triboelectric output stability in the humidity range of 20–85%. In addition to serving for energy harvesting, a potential application as a waist-wearable respiration sensor for running was further developed. This work provides a promising strategy for improving the triboelectric performance of chitosan and expanding its potential applications.
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