Influence of isovalent ion substitution on the electrochemical performance of LiCoPO4

被引：55

作者：

Kishore, MVVMS

Varadaraju, UV ^{[1
]}

机构：

[1] Indian Inst Technol, Mat Sci Res Ctr, Madras 600036, Tamil Nadu, India

[2] Indian Inst Technol, Dept Chem, Madras 600036, Tamil Nadu, India

来源：

MATERIALS RESEARCH BULLETIN | 2005年 / 40卷 / 10期

关键词：

inorganic compounds; electrochemical measurements; X-ray diffraction; electrochemical properties;

D O I：

10.1016/j.materresbull.2005.05.011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

LiCo1-xMxPO4 (M = Mg2+, Mn2+ and Ni2+; 0 <= x <= 0.2) compounds have been synthesized by solid-state reaction method and studied as cathode materials for secondary lithium batteries. LiCoPO4 exhibits a discharge plateau at similar to 4.7 V with an initial discharge capacity of 125 mAh/g and on cycling capacity falls. Substitution of Co2+ with Mg2+/Mn2+/Ni2+ in LiCoPO4 has an influence on the initial discharge capacity and on cycling behaviour. The capacity retention of LiCoPO4 is improved by manganese substitution. Among the manganese substituted phases, LiCo0.95Mn0.05PO4 shows good reversible capacity of similar to 50 mAh/g. (C) 2005 Elsevier Ltd. All rights reserved.

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页码：1705 / 1712

页数：8

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