期刊
ACS APPLIED ENERGY MATERIALS
卷 2, 期 3, 页码 1629-1633出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.9b00135
关键词
lithium batteries; oxyfluoride; positive electrode; concentrated electrolyte; molybdenum
资金
- JSPS KAKENHI Grant [18H02076]
- Grants-in-Aid for Scientific Research [18H02076] Funding Source: KAKEN
A titanium-substituted lithium-excess molybdenum oxyfluoride, Li2.1-yTi0.2Mo0.7O2F, is synthesized by mechanical milling and tested as a positive electrode material in a conventional carbonate-based electrolyte or concentrated electrolyte. Reversibility as the electrode material is significantly improved by suppression of dissolution of the molybdenum oxyfluoride on electrochemical cycles. Li2.1-yTi0.2Mo0.7O2F delivers a reversible capacity of 265 mA h g(-1) after 30 cycles at a rate of 50 mA g(-1) with concentrated electrolyte. This finding contributes to the development of high-energy and long-cycle-life rechargeable lithium batteries with lithium-excess metal oxyfluorides in the future.
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