1. Energy harvesting by ambient humidity variation with continuous milliampere current output and energy storage
- Author
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Yusuke Komazaki, Yuichi Watanabe, Kouji Suemori, Kenji Kanazawa, Sei Uemura, Hirotada Hirama, and Taiki Nobeshima
- Subjects
Generator (circuit theory) ,Milliampere ,Fuel Technology ,Materials science ,Renewable Energy, Sustainability and the Environment ,Nuclear engineering ,Energy Engineering and Power Technology ,Humidity ,Current (fluid) ,Energy source ,Energy harvesting ,Energy storage ,Voltage - Abstract
A hygroelectric generator (HEG) is an energy harvesting technology that utilises ambient moisture as the energy source. However, this technology is currently hampered by a low current output and the need for an external energy storage device. In this study, a novel type of HEG with energy storage and high current output owing to a liquid-based cell structure called hygroelectric cell (HEC) was developed. The HEC could generate a peak-to-peak voltage of 42 mV and short-circuit current of 5 mA at maximum by humidity variation between 30–90% RH. In addition, the basic theories underlying the HEC were established and verified by experiments.
- Published
- 2021
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