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

被引：18

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

页码：A2296 / A2301

页数：6

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