A Flexible Rechargeable Zinc-Air Battery with Excellent Low-Temperature Adaptability

被引:340
作者
Pei, Zengxia [1 ]
Yuan, Ziwen [1 ]
Wang, Chaojun [1 ]
Zhao, Shenlong [1 ]
Fei, Jingyuan [1 ]
Wei, Li [1 ]
Chen, Junsheng [1 ]
Wang, Cheng [1 ]
Qi, Rongjie [1 ,2 ]
Liu, Zongwen [1 ]
Chen, Yuan [1 ]
机构
[1] Univ Sydney, Sch Chem & Biomol Engn, Sydney, NSW 2006, Australia
[2] Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China
基金
澳大利亚研究理事会;
关键词
electrocatalysis; flexible electronics; hydrogel electrolytes; low-temperature; zinc-air battery; OXYGEN REDUCTION; POROUS CARBON; ELECTROCATALYSTS; ORGANOHYDROGELS; FRAMEWORKS; CATALYSTS;
D O I
10.1002/anie.201915836
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
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.
引用
收藏
页码:4793 / 4799
页数:7
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