Electrochemical performance of LiV3-2xNixMnxO8 cathode materials synthesized by the sol-gel method

被引：33

作者：

Liu, Li ^{[1
]}

Hao, Lifang ^{[1
]}

Sun, Junli ^{[1
]}

Zhao, Ming ^{[1
]}

Zhang, Yanhui ^{[1
]}

Yuan, Huatang ^{[1
]}

Wang, Yongmei ^{[1
]}

机构：

[1] Nankai Univ, Inst New Energy Mat Chem, Tianjin 300071, Peoples R China

来源：

SOLID STATE IONICS | 2008年 / 178卷 / 33-34期

基金：

中国国家自然科学基金;

关键词：

LiV3O8; cathode materials; co-doping; lithium-ion batteries;

D O I：

10.1016/j.ssi.2007.11.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A series of cathode materials for lithium-ion batteries with the formula LiV3-2xNixMnxO8 (0 <= x <= 0.100) were synthesized by a sol-gel method. The effects of Ni and Mn substitution on the structural, morphology and electrochemical properties of the cathode materials were investigated through X-ray diffraction (XRD), scanning electron microscopy (SEM), charge-discharge test, cyclic voltammogram (CV) and electrochemical impedance spectroscopy (EIS) experiments. Results show that an effective improved cycling performance is observed for Ni and Mn co-doped cathode materials, which is interpreted to be due to a greater reversibility during cycling and decrease of charge-transfer impedance. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：1756 / 1761

页数：6

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