A high-efficiency bioinspired photoelectric-electromechanical integrated nanogenerator

Sicheng Liu, Xi Liu, Guilin Zhou, Fuxiang Qin, Mingxing Jing, Lin Li (), Wenlong Song () and Zhuangzhi Sun ()
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Sicheng Liu: Northeast Forestry University
Xi Liu: Northeast Forestry University
Guilin Zhou: Northeast Forestry University
Fuxiang Qin: Northeast Forestry University
Mingxing Jing: Northeast Forestry University
Lin Li: Harbin Normal University
Wenlong Song: Northeast Forestry University
Zhuangzhi Sun: Northeast Forestry University

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract Currently, the key challenge in triboelectric nanogenerators (TENGs) is how to efficiently enhance the surface charge density. Here, a new strategy is proposed to increase the surface charge density by comprehensively utilizing solar energy and tidal energy, and a bioinspired photoelectric-electromechanical integrated TENG (Pem-iTENG) is developed. This enhancement of output performance is greatly attributed to the accumulation of photoelectrons from photocatalysis and the triboelectric negative charges from contact electrification. Pem-iTENG shows a maximal open-circuit voltage of 124.2 V and a maximal short-circuit current density of 221.6 μA cm−2 under tidal wave and sunlight, an improvement by nearly a factor of 10 over that of reported TENGs based on solid-liquid contact electrification. More importantly, it exhibits a high energy conversion efficiency according to the evaluation method for solar cells. This work provides insights into development of high-performance TENGs by using different natural energy sources.

Date: 2020
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DOI: 10.1038/s41467-020-19987-0

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