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Nat Commun. 2019 Mar 29;10(1):1426. doi: 10.1038/s41467-019-09464-8.

Integrated charge excitation triboelectric nanogenerator.

Author information

1
Department of Applied Physics, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 400044, Chongqing, P. R. China.
2
Department of Applied Physics, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 400044, Chongqing, P. R. China. cquphysicsghy@gmail.com.
3
Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, 100083, Beijing, P. R. China. cquphysicsghy@gmail.com.
4
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA. cquphysicsghy@gmail.com.
5
Department of Applied Physics, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 400044, Chongqing, P. R. China. hucg@cqu.edu.cn.
6
Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, 100083, Beijing, P. R. China. zhong.wang@mse.gatech.edu.
7
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA. zhong.wang@mse.gatech.edu.

Abstract

Performance of triboelectric nanogenerators is limited by low and unstable charge density on tribo-layers. An external-charge pumping method was recently developed and presents a promising and efficient strategy towards high-output triboelectric nanogenerators. However, integratibility and charge accumulation efficiency of the system is rather low. Inspired by the historical development of electromagnetic generators, here, we propose and realize a self-charge excitation triboelectric nanogenerator system towards high and stable output in analogy to the principle of traditional magnetic excitation generators. By rational design of the voltage-multiplying circuits, the completed external and self-charge excitation modes with stable and tailorable output over 1.25 mC m-2 in contact-separation mode have been realized in ambient condition. The realization of the charge excitation system in this work may provide a promising strategy for achieving high-output triboelectric nanogenerators towards practical applications.

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