Novel copper redox-based cathode materials for room-temperature sodium-ion batteries

作     者：徐淑银 吴晓燕 李云明 胡勇胜 陈立泉 

作者机构：Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of Sciences 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2014年第23卷第11期

页      面：107-110页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.51222210 and 11234013) the One Hundred Talent Project of the Chinese Academy of Sciences 

主　　题：energy storage sodium-ion battery cathode copper redox 

摘      要：Layered oxides of P2-type Nao.68Cuo.34Mno.6602, P2-type Nao.68Cuo.34Mno.50Tio.1602, and O＇3-type NaCuo.67Sbo.3302 were synthesized and evaluated as cathode materials for room-temperature sodium-ion batteries. The first two materials can deliver a capacity of around 70 mAh/g. The Cu2＋ is oxidized to Cu3＋ during charging, and the Cu3＋ goes back to Cu2＋ upon discharging. This is the first demonstration of the highly reversible change of the redox couple of Cu2＋/Cu3＋ with high storage potential in secondary batteries.