Titanium-Substituted Na0.44MnO2 Nanorods as Cathode Materials for High Performance Sodium-Ion Batteries

被引：17
作者：
Zhan, Pan [1 ]
Jiao, Kailong [1 ]
Wang, Junxiang [1 ]
Hu, Zongqian [2 ]
Ma, Rui [1 ]
Zhu, Hongmin [1 ,3 ]
Jiao, Shuqiang [1 ]
机构：
[1] Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China
[2] Beijing Inst Radiat Med, Beijing 100850, Peoples R China
[3] Tohoku Univ, Dept Met Mat Sci & Mat Proc, Sendai, Miyagi 9808579, Japan
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2015年 / 162卷 / 12期
关键词：
LESS-THAN X; ELECTRODE MATERIALS; ENERGY-STORAGE; ELECTROCHEMICAL PROPERTIES; MANGANESE OXIDE; POSITIVE ELECTRODE; INSERTION; INTERCALATION; SYSTEMS;
D O I：
10.1149/2.0521512jes
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A series of titanium-substituted manganese oxides, Na0.44TixMn1-xO2 (x = 0.11, 0.22, 0.33, and 0.44) with the Na0.44MnO2 were prepared by sol-gel methods. The electrochemical characteristics of these compounds, which are different from Na0.44MnO2, were examined in coin-type cells with NaPF6 electrolyte. While the Na0.44Ti0.11Mn0.89O2 and Na0.44Ti0.44Mn0.56O2 delivered lower capacities, the Na0.44Ti0.22Mn0.78O2 showed higher capacities, about 120 mAh g(-1). The Ti-substituted materials exhibited excellent capacity retention over one hundred or more cycles, with 71.8% capacity retention over 450 cycles. Titanium substitution eliminates Mn dissolution. (C) 2015 The Electrochemical Society.
引用
收藏
页码：A2296 / A2301
页数：6
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