Magnetic capsulate triboelectric nanogenerators

Pengcheng Jiao; Ali Matin Nazar; King-James Idala Egbe; Kaveh Barri; Amir H Alavi

doi:10.1038/s41598-021-04100-2

Magnetic capsulate triboelectric nanogenerators

Sci Rep. 2022 Jan 7;12(1):89. doi: 10.1038/s41598-021-04100-2.

Authors

Pengcheng Jiao^{1

2

3}, Ali Matin Nazar⁴, King-James Idala Egbe⁴, Kaveh Barri⁵, Amir H Alavi^{5

6}

Affiliations

¹ Institute of Port, Coastal and Offshore Engineering, Ocean College, Zhejiang University, Zhoushan, 316021, Zhejiang, China. pjiao@zju.edu.cn.
² Hainan Institute of Zhejiang University, Sanya, 572025, Hainan, China. pjiao@zju.edu.cn.
³ Engineering Research Center of Oceanic Sensing Technology and Equipment, Zhejiang University, Ministry of Education, Hangzhou, China. pjiao@zju.edu.cn.
⁴ Institute of Port, Coastal and Offshore Engineering, Ocean College, Zhejiang University, Zhoushan, 316021, Zhejiang, China.
⁵ Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh, PA, USA.
⁶ Department of Computer Science and Information Engineering, Asia University, Taichung, Taiwan.

Abstract

Triboelectric nanogenerators have received significant research attention in recent years. Structural design plays a critical role in improving the energy harvesting performance of triboelectric nanogenerators. Here, we develop the magnetic capsulate triboelectric nanogenerators (MC-TENG) for energy harvesting under undesirable mechanical excitations. The capsulate TENG are designed to be driven by an oscillation-triggered magnetic force in a holding frame to generate electrical power due to the principle of the freestanding triboelectrification. Experimental and numerical studies are conducted to investigate the electrical performance of MC-TENG under cyclic loading in three energy harvesting modes. The results indicate that the energy harvesting performance of the MC-TENG is significantly affected by the structure of the capsulate TENG. The copper MC-TENG systems are found to be the most effective design that generates the maximum mode of the voltage range is 4 V in the closed-circuit with the resistance of 10 GΩ. The proposed MC-TENG concept provides an effective method to harvest electrical energy from low-frequency and low-amplitude oscillations such as ocean wave.