期刊
JOURNAL OF POWER SOURCES
卷 183, 期 1, 页码 325-329出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2008.04.084
关键词
lithium-ion batteries; cathode; electrolytic manganese dioxide; carbon composite; irreversible capacity; cycleability
资金
- Resource Recycling R&D Centre in Korea
- Korea Science and Engineering Foundation (KOSEF) [R11-2002-102-02001-0]
Electrolytic manganese dioxide (EMD) recovered from a simulated leaching Solution of spent alkaline batteries using a modified cyclone cell is tested as a cathode material for Li secondary batteries. An EMD/C(Super P) composite heat-treated at 400 C after high-energy mechanical milling shows better electrochemical performance than that of pure EMD in terms of cycleability and capacity fading. The electrochemical characteristics of the EMD/C(Super P) composite are investigated by various analytical techniques. The irreversible capacity during the first cycle is mainly due to the formation of a Li2MnO3 phase. The carbon composite also retards the dissolution of Mn during cycling. (C) 2008 Elsevier B.V. All rights reserved.
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