Moisture adsorption-desorption full cycle power generation

Haiyan Wang, Tiancheng He, Xuanzhang Hao, Yaxin Huang, Houze Yao, Feng Liu (), Huhu Cheng () and Liangti Qu ()
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Haiyan Wang: Tsinghua University
Tiancheng He: Tsinghua University
Xuanzhang Hao: Tsinghua University
Yaxin Huang: Tsinghua University
Houze Yao: Tsinghua University
Feng Liu: Chinese Academy of Sciences
Huhu Cheng: Tsinghua University
Liangti Qu: Tsinghua University

Nature Communications, 2022, vol. 13, issue 1, 1-11

Abstract: Abstract Environment-adaptive power generation can play an important role in next-generation energy conversion. Herein, we propose a moisture adsorption-desorption power generator (MADG) based on porous ionizable assembly, which spontaneously adsorbs moisture at high RH and desorbs moisture at low RH, thus leading to cyclic electric output. A MADG unit can generate a high voltage of ~0.5 V and a current of 100 μA at 100% relative humidity (RH), delivers an electric output (~0.5 V and ~50 μA) at 15 ± 5% RH, and offers a maximum output power density approaching to 120 mW m−2. Such MADG devices could conduct enough power to illuminate a road lamp in outdoor application and directly drive electrochemical process. This work affords a closed-loop pathway for versatile moisture-based energy conversion.

Date: 2022
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DOI: 10.1038/s41467-022-30156-3

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