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All-region-applicable, continuous power supply of graphene oxide composite

Abstract

Green energy has aroused huge interest in face with increasingly serious environmental pollution and energy crisis. Herein, we develop an all-region-applicable moist-electric generator (MEG) based on graphene oxide composite to harvest energy from atmospheric moisture in a wide range of temperature (-25 oC–50 oC) and relative humidity (RH, 5%–95%). It can continuously deliver a comparatively high open-circuit voltage of ~0.6 V for more than 120 hours at ambient environment with a small device size of only about 0.1 cm–2. The electric output can be enhanced to directly power many commercial electronic devices without need of external rectifying circuits and capacitors. Experiments and simulations suggest that the spontaneous absorption of water molecules and the directional migration of ions within the composite mainly contribute to the electric generation. This work provides a new insight for generating the sustained green energy from atmospheric moisture in arbitrary ambient environments, holding immense promise for widespread practical applications in complicated geographies and environments.

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Supplementary files

Publication details

The article was received on 14 Mar 2019, accepted on 08 May 2019 and first published on 08 May 2019


Article type: Communication
DOI: 10.1039/C9EE00838A
Energy Environ. Sci., 2019, Accepted Manuscript

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    All-region-applicable, continuous power supply of graphene oxide composite

    Y. Huang, H. Cheng, C. Yang, H. Yao, C. Li and L. Qu, Energy Environ. Sci., 2019, Accepted Manuscript , DOI: 10.1039/C9EE00838A

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