期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 577, 期 -, 页码 86-91出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2020.05.069
关键词
Metal sulfide; Ether-based electrolyte; Anode materials; Carbonate-based electrolyte; Lithium-ion battery
资金
- National Natural Science Foundation of China [21776196, 51778397]
- Key R&D projects of Shanxi Province [201803D421089]
- Shanxi Province Science Foundation for Youths [RD2000002002]
Anode materials based on transition metal sulfides suffer from poor electrochemical reversibility, which limits their cycling stability. Herein, we synthesize hollow I-Cu2MoS4 nanocubes composed of ultrathin nanosheets using a solvothermal method with Cu2O nanocubes as sacrificial templates. The presence of a surfactant is a key factor that prevents the structural collapse of the hollow cubic structure of Cu2MoS4 and the formation of nanoplates. An ether-based electrolyte shows better compatibility with the Cu2MoS4 electrode than a carbonate-based electrolyte, which is reflected in high reversible capacity, superior rate performance, and remarkably improved cycling performance. Ex-situ XRD analysis demonstrates a highly reversible electrochemical reaction in the ether-based electrolyte, which enhances the cycling stability. (C) 2020 Elsevier Inc. All rights reserved.
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