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Moisture adsorption-desorption full cycle power generation

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. Reducing humanity’s reliance on fossil fuels will require the development of alternative, renewable energy technologies. Here, authors prepare a moisture adsorption-desorption power generator that asymmetrically adsorbs and desorbs moisture at high and low humidity to provide an electric output.

SUBMITTER: Wang H

PROVIDER: S-EPMC9085775 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature

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