中国物理B ›› 2015, Vol. 24 ›› Issue (3): 38202-038202.doi: 10.1088/1674-1056/24/3/038202

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New layered metal oxides as positive electrode materials for room-temperature sodium-ion batteries

穆林沁, 胡勇胜, 陈立泉   

  1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2014-12-26 修回日期:2015-01-30 发布日期:2015-03-25

New layered metal oxides as positive electrode materials for room-temperature sodium-ion batteries

Mu Lin-Qin (穆林沁), Hu Yong-Sheng (胡勇胜), Chen Li-Quan (陈立泉)   

  1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2014-12-26 Revised:2015-01-30 Published:2015-03-25
  • Contact: Hu Yong-Sheng E-mail:yshu@aphy.iphy.ac.cn

摘要:

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 solidstate 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.

关键词: layered oxides, positive electrode, sodium-ion battery, energy storage

Abstract:

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 solidstate 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.

Key words: layered oxides, positive electrode, sodium-ion battery, energy storage

中图分类号:  (Nanostructured materials in electrochemistry)

  • 82.45.Yz
82.47.Aa (Lithium-ion batteries) 82.47.Cb (Lead-acid, nickel-metal hydride and other batteries)