期刊
CHEMICAL ENGINEERING JOURNAL
卷 382, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2019.123049
关键词
Disorder/order structure; Magnesium-ion battery; Cathode material; Structural stability; Electrochemical mechanism
资金
- National Natural Science Foundation of China [51771071, 51602239]
- International Science & Technology Cooperation Program of China [2016YFE0124300]
- National Key Research and Development Program of China [2016YFA0202600]
- Hubei Provincial Natural Science Foundation of China [2016CFB267]
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Lightweight Materials and Processing, Hubei University of Technology [201710A05]
Rechargeable magnesium-ion batteries (MIBs) are a potential alternative to lithium-ion batteries (LIBs). However, the strong interaction between the divalent Mg2+ and the host lattice leads to the destruction of electrode materials structure. In this work, we have presented electrochemically induced formation of disorder/order structure to improve the structural stability of electrode material during magnesium storage. FeVO4 cathode displays a high Mg storage capacity (similar to 300 mAh g(-1)) and excellent cycling stability (capacity retention of 85% after 1000 cycles at 1 A g(-1)). Additionally, the Mg storage mechanism of FeVO4 cathode is demonstrated as the irreversible transformation at first discharge process and the reversible intercalation-type reaction at subsequent cycling. This work demonstrates that disorder/order engineering is a new way to achieve excellent magnesium storage performance.
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