Electrochemical characteristics of manganese oxide/carbon composite as a cathode material for Li/MnO2 secondary batteries

被引：43

作者：

Lee, Jungbae ^{[1
]}

Lee, Jae-Myung ^{[1
]}

Yoon, Sukeun ^{[1
]}

Kim, Sang-Ok ^{[1
]}

Sohn, Jung-Soo ^{[2
]}

Rhee, Kang-In ^{[2
]}

Sohn, Hun-Joon ^{[1
]}

机构：

[1] Seoul Natl Univ, Res Ctr Energy Convers & Storage, Dept Mat Sci & Engn, Seoul 151742, South Korea

[2] Korea Inst Geosci & Mineral Resources, Minerals & Mat Proc Div, Taejon 305350, South Korea

来源：

JOURNAL OF POWER SOURCES | 2008年 / 183卷 / 01期

关键词：

lithium-ion batteries; cathode; electrolytic manganese dioxide; carbon composite; irreversible capacity; cycleability;

D O I：

10.1016/j.jpowsour.2008.04.084

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 [物理化学]; 081704 [应用化学];

摘要：

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.

引用

页码：325 / 329

页数：5

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