This paper demonstrates a method for direct hydrogen production from ambient air using direct air electrolysis (DAE). The DAE module captures atmospheric water vapor using a hygroscopic electrolyte and then performs electrolysis powered by renewable energy sources like solar or wind, achieving a current density up to 574 mA cm⁻². A prototype ran stably for 12 days with ~95% Faradaic efficiency, even at 4% relative humidity. This technology addresses water scarcity issues in hydrogen production, offering a sustainable solution for remote and arid regions.
Publisher
Nature Communications
Published On
Sep 06, 2022
Authors
Jining Guo, Yuecheng Zhang, Ali Zavabeti, Kaifei Chen, Yalu Guo, Guoping Hu, Xiaolei Fan, Gang Kevin Li
Tags
hydrogen production
direct air electrolysis
renewable energy
water scarcity
sustainable technology
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