期刊
CHINESE PHYSICS B
卷 24, 期 3, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1674-1056/24/3/038202
关键词
layered oxides; positive electrode; sodium-ion battery; energy storage
资金
- National Natural Science Foundation of China [51222210, 11234013]
- One Hundred Talent Project of the Chinese Academy of Sciences
In order to achieve better Na storage performance, most layered oxide positive electrode materials contain toxic and expensive transition metals Ni and/or Co, which are also widely used for lithium-ion batteries. Here we report a new quaternary layered oxide consisting of Cu, Fe, Mn, and Ti transition metals with O3-type oxygen stacking as a positive electrode for room-temperature sodium-ion batteries. The material can be simply prepared by a high-temperature solid-state reaction route and delivers a reversible capacity of 94 mAh/g with an average storage voltage of 3.2 V. This paves the way for cheaper and non-toxic batteries with high Na storage performance.
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