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Research Article

Modeling and optimization of a spherical triboelectric generator

Jens Gravesen1Morten Willatzen2( )Jiajia Shao2Zhong Lin Wang2,3
DTU Compute, Technical University of Denmark, Kgs. Lyngby, DK-2800, Denmark
Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, China
Georgia Institute of Technology, Atlanta, Georgia 30332, USA
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Graphical Abstract

Trapezium-shaped electrodes attached to a spherical triboelectric nanogenerator.

Abstract

A detailed geometric analysis of spherical triboelectric nanogenerators is presented. In comparison with earlier works on spherical triboelectric generators, the general case where the moving dielectric rolls on the inside surface of the larger sphere of the TENG is discussed in terms of maximum energy harvesting. An optimization analysis of geometrical parameters allows various cases of electrode geometry, either in the form of a spherical circle, spherical ellipse, spherical rectangle, or spherical isosceles trapezium, to be solved. The analytical insight and computational effective models provided by differential geometry make the mathematical model superior compared to standard three-dimensional (3D) numerical methods.

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Nano Research
Pages 11925-11931
Cite this article:
Gravesen J, Willatzen M, Shao J, et al. Modeling and optimization of a spherical triboelectric generator. Nano Research, 2023, 16(9): 11925-11931. https://doi.org/10.1007/s12274-023-5745-4
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Received: 28 January 2023
Revised: 27 March 2023
Accepted: 12 April 2023
Published: 14 June 2023
© Tsinghua University Press 2023
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