Electrochemical characterizations of Li2.6Co0.4N/Graphite anodes for lithium ion batteries

被引：9

作者：

Liu, Daliang ^{[1
]}

Du, Fei ^{[1
]}

Pan, Wencheng ^{[1
]}

Chen, Gang ^{[1
]}

Wang, Chunzhong ^{[1
]}

Wei, Yingjin ^{[1
]}

机构：

[1] Jilin Univ, Dept Mat Sci, Coll Mat Sci & Engn, Changchun 130012, Peoples R China

来源：

MATERIALS LETTERS | 2009年 / 63卷 / 3-4期

关键词：

Lithium ion battery; Natural graphite; Lithium nitridocobaltate; Composite material; Electrical properties; MODIFIED NATURAL GRAPHITE; SECONDARY BATTERIES; PERFORMANCE; COMPOSITE; BEHAVIOR; CU;

D O I：

10.1016/j.matlet.2008.11.036

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Li2.6Co0.4N anode material was prepared by solid-state reaction. The material was used to prepare Li2.6Co0.4N/natural graphite composite anode materials with the aim to improve the electrochemical performance of natural graphite. Natural graphite showed a low initial columbic efficiency of 69%, which was improved to -100% by adding 20 wt.% of Li2.6Co0.4N into the material. On the other hand, the composite materials showed better capacity retention than both pure Li2.6Co0.4N and natural graphite. The material containing 20 wt.% of Li2.6Co0.4N exhibited a reversible discharge capacity of 243 mAh g(-1) after thirty cycles, as compared to a capacity of 212 mAh g(-1) for natural graphite. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：504 / 506

页数：3

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