Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 12, Pages 4793-4799Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201915836
Keywords
electrocatalysis; flexible electronics; hydrogel electrolytes; low-temperature; zinc-air battery
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Funding
- Australian Research Council [FT160100107, DP180102210]
- Australian Research Council Discovery Early Career Researcher Award [DE200101669]
- University of Sydney Fellowship Scheme
- Faculty of Engineering Early Career Researcher Development Scheme
- Australian Research Council [DE200101669] Funding Source: Australian Research Council
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Flexible zinc-air batteries (ZAB) are a promising battery candidate for emerging flexible electronic devices, but the catalysis-based working principle and unique semi-opened structure pose a severe challenge to their overall performance at cold temperature. Herein, we report the first flexible rechargeable ZAB with excellent low-temperature adaptability, based on the innovation of an efficient electrocatalyst to offset the electrochemical performance shrinkage caused by decreased temperature and a highly conductive hydrogel with a polarized terminal group to render the anti-freezing property. The fabricated ZABs show excellent electrochemical performances that outperform those of many aqueous ZABs at room temperature. They also deliver a high capacity of 691 mAh g(-1) and an energy density of 798 Wh kg(-1) at -20 degrees C (92.7 % and 87.2 % retention of the room temperature counterparts, respectively), together with excellent flexibility and reverting capability.
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