期刊
ELECTROCHIMICA ACTA
卷 403, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2021.139629
关键词
Aqueous zinc-ion batteries; Zn2Mo3O8; Electrochemical performance; Layered structure; In-operando XRD
资金
- NSFC through NSFC Committee of China [52177213]
- Science and Technology Bureau of Guangdong Government [2017B030308005, 2020A1414010346]
- Science and Technology Bureau from Dongguan Government [2019622163008]
- South China University of Technology [X202110561688]
Rechargeable aqueous zinc-ion batteries (AZIBs) have the potential to be an alternative to lithium-ion batteries for large-scale sustainable energy storage devices due to their high specific capacity, low cost, and safety. In this study, layered structural Zn2Mo3O8 is introduced as a promising candidate for AZIB cathode materials. The carbon-coated Zn2Mo3O8 electrode exhibits good cycling stability and excellent rate capability under a wide voltage window. This work sheds light on the application of molybdenum-based compounds in aqueous batteries.
Rechargeable aqueous zinc-ion batteries (AZIBs) with high specific capacity reveal potential as an alternative to lithium-ion batteries for low cost and safety in large-scale sustainable energy storage devices. Herein, we introduce the promising candidate of layered structural Zn2Mo3O8 as the cathode material for AZIBs. Carbon-coated Zn2Mo3O8 is first prepared via a simple sol-gel method, and its crystal structure and morphology are investigated in detail. The Zn2Mo3O8 electrode exhibits a good cycling stability (105 mAh g(-1) for 90 cycles at 0.1 A g(-1)) and shows an excellent rate capability (53 mAh g(-1) at a fast charging of 2 A g(-1)) under a wide voltage window of 0.05-1.7 V. Our work would enlighten and encourage the molybdenum-based compounds to a brand-new stage for the application of aqueous batteries. (c) 2021 Elsevier Ltd. All rights reserved.
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