期刊
ELECTROCHIMICA ACTA
卷 378, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2021.138106
关键词
Zinc anode; Dendrite; Acrylamide additive
资金
- Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang [2019R01006]
- National Key R and D Program of China [2018YFB0104303]
- Thousand Youth Talents Program and Thousand the Talents Program
The study focuses on improving the performance of zinc anodes by constructing a polyacrylamide interphase, which enables homogeneous nucleation and high coulombic efficiency, leading to an extended lifespan of the battery.
Zinc metal featuring intrinsic safety, low cost, and high volumetric capacity is an attractive anode material in aqueous batteries. However, the practical application of Zinc-based batteries is seriously impeded by the uneven stripping/plating of zinc ions as well as low coulombic efficiency due to the side reaction at the electrode-electrolyte interface. Herein, polyacrylamide interphase is constructed via in-situ polymerization of acrylamide additive, which can constrain freely lateral diffusion of zinc ions and suppress parasitic reactions, endowing zinc anode with homogeneous nucleation and high coulombic efficiency. With this method, a stable metal-electrolyte interface can be formed and a prolonged lifespan of more than 680 h at 1 mA cm(-2) for 1 mA h cm(-2) can be obtained. (C) 2021 Published by Elsevier Ltd.
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