Engineering and Technology

Circadian humidity fluctuation induced capillary flow for sustainable mobile energy

J. Tang, Y. Zhao, et al.

Discover an innovative energy harvesting method by Jiayue Tang, Yuanyuan Zhao, and colleagues that harnesses daily humidity fluctuations to generate electricity. By employing spherical ionic liquid droplets on a nanowire array, this research reveals a sustainable energy source capable of powering LEDs and LCD screens.

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Abstract

This paper demonstrates a novel energy harvesting method utilizing daily humidity fluctuations. Spherical ionic liquid droplets placed on a nanowire array generate electricity through directional capillary flow driven by moisture absorption and desorption. The nanowire array pins the droplet, causing inward or outward flow depending on humidity changes, resulting in a continuous voltage output. Experiments show this system can power LEDs and LCD screens, highlighting the potential of ubiquitous humidity fluctuations as a sustainable energy source.

Publisher

Nature Communications

Published On

Mar 11, 2022

Authors

Jiayue Tang, Yuanyuan Zhao, Mi Wang, DianyU Wang, Xuan Yang, Ruiran Hao, Mingzhan Wang, Yanlei Wang, Hongyan He, John H. Xin, Shuang Zheng

DOI

https://doi.org/10.1038/s41467-022-28998-y

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