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

Electrolytic manganese dioxide (EMD) recovered from a simulated leaching solution of spent alkaline batteries using a modified cyclone cell was 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 showed bette...

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Published inJournal of power sources Vol. 183; no. 1; pp. 325 - 329
Main Authors Lee, Jungbae, Lee, Jae-Myung, Yoon, Sukeun, Kim, Sang-Ok, Sohn, Jung-Soo, Rhee, Kang-In, Sohn, Hun-Joon
Format Journal Article
LanguageEnglish
Published 15.08.2008
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Summary:Electrolytic manganese dioxide (EMD) recovered from a simulated leaching solution of spent alkaline batteries using a modified cyclone cell was 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 showed better electrochemical performance than that of pure EMD in terms of cyclability and capacity fading. The electrochemical characteristics of the EMD/C(Super P) composite were investigated by various analytical techniques. The irreversible capacity during the first cycle was mainly due to the formation of a Li2MnO3 phase. The carbon composite also retarded the dissolution of Mn during cycling. 21 refs.
Bibliography:ObjectType-Article-2
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ISSN:0378-7753
DOI:10.1016/j.jpowsour.2008.04.084