Electrochemistry
Online ISSN : 2186-2451
Print ISSN : 1344-3542
ISSN-L : 1344-3542
Communications
Application of Dibenzo[c,e][1,2]dithiin, Phenanthro[4,5-cde][1,2]dithiin, Triphenyleno[1,12-cde][1,2]dithiin, and 6,7-Dithiodibenzo[c,e][1,2]dithiin as Cathode Active Materials for Lithium Secondary Batteries
Hiroyuki TANIDaisuke YOSHITOKUTokuo INAMASUNoboru ONO
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JOURNALS OPEN ACCESS

2003 Volume 71 Issue 12 Pages 1055-1057

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Abstract

Dibenzo[c,e][1,2]dithiin (1), phenanthro[4,5-cde][1,2]dithiin (2), triphenyleno[l,12-cde][l,2]dithiin (3), and 6,7-dithiodibenzo[c,e][1,2]dithiin (4) were synthesized and the electrochemical properties of their compounds were investigated as cathode active materials in lithium secondary batteries. When solid polymer electrolyte (SPE) was used for making cells, the initial discharge capacity of the cell made of 2 (abbreviated as the cell 2 and so on) and the cell 3 were 177.4 mAh/g and 122.3 mAh/g at 60°C respectively. Furthermore, the cell 4, which has two disulfides in a molecule, showed the good initial discharge capacity of 264.1 mAh/g and the large rechargeable capacity, and the best electrochemical behaviors among 1, 2, 3, and 4.

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© 2003 The Electrochemical Society of Japan
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