Abstract
Improving the output performance of triboelectric nanogenerators (TENGs) is a key to developing commercial applications. Here, a leather-based positive friction layer (LCF-PCOOH@PPy) was proposed by introducing carboxyl grafted polyhedral oligomeric silsesquioxane (PCOOH) as active charge trapping sites and Polypyrrole (PPy) to improve charge transport properties. Then, a high-performance leather-based TENG was successfully fabricated. With the addition of PCOOH and PPy, the open circuit voltage of the leather-based TENG showed a sharp enhancement, rising from 75 V to 350 V. Leather-based TENG exhibited strong robustness, and the current attenuation was only 3.5 % after running 15, 000 cycles continuously. The output performance of the leather-based TENG remained stable after 30 days of use. Besides, the fabricated device exhibited an extremely short response time and high sensitivity of 81 ms and 3.10 V × kPa−1, when used as a self-powered sensing device. For hygiene issues of wearable devices, the antibacterial rate of LCF-PCOOH@PPy to S. aureus reached 99.5 %. In this study, PCOOH was proposed for the first time as the charge trapping site of the friction layer material to improve the output performance of TENG, which provided a new idea for the selection of functional materials.
Published Version
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