Surface modification of chitin nanocrystals using conducting polymer for triboelectric nanogenerator

IF 16.8 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy Pub Date : 2025-01-09 DOI:10.1016/j.nanoen.2025.110660

Chuangchi Ma, Yunqing He, Luying Zeng, Mingxian Liu

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引用次数: 0

Abstract

Single-electrode triboelectric nanogenerators (TENG) attracted much attentions due to their simplified structure, high energy conversion efficiency, flexible adaptability and wide application potential. Herein, a multifunctional, flexible and highly responsive single-electrode TENG was fabricated by grafting of conducting polypyrrole (PPy) onto the surface of chitin nanocrystals (ChNCs). ChNCs effectively improved the dispersibility of PPy in aqueous solution, thereby improving the electrochemical performance of the suspension. A single-electrode triboelectric nanogenerator (PC-TENG) was fabricated using PPy@ChNCs suspension as the electrode material and polydimethylsilane (PDMS) as the encapsulation material and friction layer. The solid-liquid double layer between the PDMS and the liquid electrode is conducive to outputting higher triboelectric performance. When the ratio of ChNCs and PPy was 1:2, PC-TENG has a maximum output voltage of approximately 65 V, output current of approximately 8.6 μA, and a transferred charge of about 38 nC. The power density of PC-TENG can reach 145 mW/m² with fast responsiveness and stable output performance after 1000 cycles. PC-TENG can realize human motion monitoring and tactile perception with a self-powered system. This work adopted biologically derived ChNCs to improve the dispersibility and conductivity of PPy, and the obtained PC-TENG exhibits promising application in wearable energy harvesting technology.

Abstract Image

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摩擦电纳米发电机用导电聚合物对几丁质纳米晶体的表面改性

单电极摩擦纳米发电机（TENG）以其结构简单、能量转换效率高、适应性强、应用前景广阔而备受关注。本文通过在几丁质纳米晶体（ChNCs）表面接枝导电聚吡咯（PPy），制备了一种多功能、柔性、高响应的单电极TENG。chnc有效地改善了PPy在水溶液中的分散性，从而提高了悬浮液的电化学性能。以PPy@ChNCs悬浮液为电极材料，聚二甲基硅烷（PDMS）为封装材料和摩擦层，制备了单电极摩擦纳米发电机（PC-TENG）。PDMS与液体电极之间的固液双层有利于输出更高的摩擦电性能。当chnc与PPy的比例为1:2时，PC-TENG的最大输出电压约为65 V，输出电流约为8.6 μA，转移电荷约为38 nC。经过1000次循环后，PC-TENG的功率密度可达145 mW/m2，响应速度快，输出性能稳定。PC-TENG可以通过自供电系统实现人体运动监控和触觉感知。本研究采用生物来源的ChNCs来改善PPy的分散性和导电性，所得PC-TENG在可穿戴能量收集技术中具有广阔的应用前景。

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来源期刊

Nano Energy CHEMISTRY, PHYSICAL-NANOSCIENCE & NANOTECHNOLOGY

CiteScore

30.30

自引率

7.40%

发文量

1207

审稿时长

23 days

期刊介绍： Nano Energy is a multidisciplinary, rapid-publication forum of original peer-reviewed contributions on the science and engineering of nanomaterials and nanodevices used in all forms of energy harvesting, conversion, storage, utilization and policy. Through its mixture of articles, reviews, communications, research news, and information on key developments, Nano Energy provides a comprehensive coverage of this exciting and dynamic field which joins nanoscience and nanotechnology with energy science. The journal is relevant to all those who are interested in nanomaterials solutions to the energy problem. Nano Energy publishes original experimental and theoretical research on all aspects of energy-related research which utilizes nanomaterials and nanotechnology. Manuscripts of four types are considered: review articles which inform readers of the latest research and advances in energy science; rapid communications which feature exciting research breakthroughs in the field; full-length articles which report comprehensive research developments; and news and opinions which comment on topical issues or express views on the developments in related fields.