Poly (acrylonitrile) encapsulated graphite as anode materials for lithium ion batteries

被引：55
|
作者：
Guo, KK [1 ]
Pan, QM [1 ]
Fang, SB [1 ]
机构：
[1] Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
来源：
JOURNAL OF POWER SOURCES | 2002年 / 111卷 / 02期
关键词：
lithium ion batteries; graphite anode; encapsulation; poly(acrylonitrile);
D O I：
10.1016/S0378-7753(02)00347-6
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：
Novel surface modification approach for graphite anode of lithium ion batteries was developed in this study. Poly(acrylonitrile) was in situ encapsulated on the surface of natural graphite (N-graphite) particles via radiation-initiated polymerization. The graphite obtained shows a large improvement in electrochemical performance such as initial Coulombic efficiency and cycleability compared with the original N-graphite. The structural stability of graphite surface is enhanced due to the fact that encapsulated poly(acrylonitrile) can depress the co-intercalation of solvated lithium ion. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：350 / 356
页数：7
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