Rate capability of natural Swedish graphite as anode material in Li-ion batteries

被引：6
作者：
Herstedt, A [1 ]
Fransson, L [1 ]
Edström, K [1 ]
机构：
[1] Uppsala Univ, Angstrom Lab, Dept Chem Mat, SE-75121 Uppsala, Sweden
来源：
JOURNAL OF POWER SOURCES | 2003年 / 124卷 / 01期
关键词：
natural graphite; jet-milling; rate capability; rhombohedral phase;
D O I：
10.1016/S0378-7753(03)00603-7
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：
Jet-milled natural Swedish graphite has been evaluated as an anode material for Li-ion battery applications, with a focus on rate capability of the material. The material was found to have a superior rate capability compared to other carbon materials with similar particle sizes. It could also intercalate and deintercalate lithium reversibly in an electrolyte based on propylene carbonate: ethylene carbonate (1:1). Jet-milling was found to increase the amount of rhombohedral phase (3R) in the material from 15 to 40%. However, after repeated electrochemical intercalation and deintercalation of lithium, the amount of 3R phase decreases to similar to5%. Neither rate capability nor PC-tolerance can therefore be correlated to the amount of 3R phase. (C) 2003 Elsevier B.V. All rights reserved.
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收藏
页码：191 / 196
页数：6
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