Rationally patterned electrode of direct-current triboelectric nanogenerators for ultrahigh effective surface charge density

Zhihao Zhao, Yejing Dai, Di Liu, Linglin Zhou, Shaoxin Li, Zhong Lin Wang () and Jie Wang ()
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Zhihao Zhao: Chinese Academy of Sciences
Yejing Dai: Sun Yat-sen University
Di Liu: Chinese Academy of Sciences
Linglin Zhou: Chinese Academy of Sciences
Shaoxin Li: Chinese Academy of Sciences
Zhong Lin Wang: Chinese Academy of Sciences
Jie Wang: Chinese Academy of Sciences

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

Abstract: Abstract As a new-era of energy harvesting technology, the enhancement of triboelectric charge density of triboelectric nanogenerator (TENG) is always crucial for its large-scale application on Internet of Things (IoTs) and artificial intelligence (AI). Here, a microstructure-designed direct-current TENG (MDC-TENG) with rationally patterned electrode structure is presented to enhance its effective surface charge density by increasing the efficiency of contact electrification. Thus, the MDC-TENG achieves a record high charge density of ~5.4 mC m−2, which is over 2-fold the state-of-art of AC-TENGs and over 10-fold compared to previous DC-TENGs. The MDC-TENG realizes both the miniaturized device and high output performance. Meanwhile, its effective charge density can be further improved as the device size increases. Our work not only provides a miniaturization strategy of TENG for the application in IoTs and AI as energy supply or self-powered sensor, but also presents a paradigm shift for large-scale energy harvesting by TENGs.

Date: 2020
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DOI: 10.1038/s41467-020-20045-y

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