Prof. Yongming Yang Profile

Prof. Yongming Yang

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Proceedings Article | 18 July 2023 Paper

Orbital trains for collecting wave energy in all directions on the ocean surface

Xingmou Liu, Yan Gu, Mengyang Liu, Yongming Yang, Ammad Jadoon

Proceedings Volume 12722, 1272205 (2023) https://doi.org/10.1117/12.2679325

KEYWORDS: Education and training, Copper, Capacitors, Electrodes, Tidal energy, Energy harvesting, Renewable energy, Oceanography

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The ocean contains rich and clean renewable blue energy such as wave energy, tidal energy and temperature difference energy. Wave energy, as one of the cleanest renewable energy sources, has the advantages of wide distribution area, long utilization time and huge energy reserves, etc. If the waves in the vast ocean can be used rationally, it can greatly satisfy human energy demand and reduce CO₂ emission, and bring profound changes to the world energy pattern and affect all aspects of economy and society. In this paper, we report an Orbital-Train Triboelectric Nanogenerator (OT-TENG) that can collect wave energy in all directions, which consists of a "rail" and a "train". The waves give a push to the train, and the train runs in the track in constant contact with the friction layer on the inside of the track to obtain electrical energy. With a 30° wave push, the OT-TENG can reach a stable voltage output of 100V, a current output of 2.3μA, and a maximum power output of 57.6μW. It can provide electrical power to electronics by charging capacitors. The wave energy on the ocean surface is abundant, and the OT-TENG can operate for a long time to generate electricity. This study shows that the OT-TENG can collect wave energy in all directions, which breaks the directional limitation of existing TENGs and provides a clear direction for the subsequent blue energy harvesting TENGs.

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