期刊
JOURNAL OF ENERGY CHEMISTRY
卷 69, 期 -, 页码 84-99出版社
ELSEVIER
DOI: 10.1016/j.jechem.2021.12.025
关键词
Aqueous batteries; Concentrated electrolytes; Water-in-salt; Hybrid electrolytes; Solid-electrolyte interface
资金
- China Postdoctoral Science Foundation [2019M661464]
- Australian Research Council (ARC) [DP180102297]
- Future Fellow Project [FT180100705]
- ARC Research Hub for Integrated Energy Storage Solutions [IH180100020]
This review summarizes the recent advances in water-in-salt electrolytes for aqueous monovalent-ion rechargeable batteries and discusses the corresponding reaction mechanisms, electrochemical performances, as well as the existing challenges and opportunities.
Aqueous rechargeable batteries have attracted enormous attention owning to their intrinsic characteristics of non-flammability, low cost, and the superior ionic conductivity of the aqueous electrolyte. However, the narrow electrochemical stability window (1.23 V), imposed by hydrogen and oxygen evolution, constrains the overall energy density of batteries. The revolutionary water-in-salt electrolytes considerably expand the electrochemical stability window to 3 or even 4 volts, giving rise to a new series of high-voltage aqueous metal-ion chemistries. Herein, the recent advances in water-in-salt electrolytes for aqueous monovalent-ion (Li+, Na+, K+) rechargeable batteries have been systematically reviewed. Meanwhile, the corresponding reaction mechanisms, electrochemical performances and the existing challenges and opportunities are also highlighted.(C) 2021 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.
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