Characteristics of (Fe, M)S2 (M=Co, Ni, Mo) Composite Powders Fabricated by MCP |
| Journal |
Materials Science Forum (Volumes 534 - 536) |
| Volume |
Progress in Powder Metallurgy |
| Pages |
17-20 |
| DOI |
10.4028/www.scientific.net/MSF.534-536.17 |
| Online since |
January, 2007 |
| Authors |
Woo Hyun Jung,
Dong Kyu Park,
Kwang Chul Jung,
Se Hoon Suck,
In Sup Ahn,
Ki Won Kim
|
| Keywords |
Lithium-Iron Disulfide Battery, Mechanochemical Process, Metal Sulfide |
| Abstract |
As the electrodes of secondary battery are made with sulfide composite powders,
excellent electrode system of environmental non-toxicity and with high specific energy density and
low material cost can be obtained. In this study, the (Fe, M)S2 composite powders was synthesized
by mechanochemical processes (MCP) in order to improve of the cycle life in bettery. The
formation of pyrite phase appreared at the case which adds nickel, but it was not observed in the
case where the transition metal was does not add but the transition metal such as cobalt,
molybdenum was added in stead. From charge-discharge test results, the initial discharge capasity
of (Fe, Ni)S2 electrode was 845 mAh/g. The initial discharge capasity of (Fe, Co)S2 electrode was
500mAh/g, but it showed a better cycle perfoemance than the case where the diffrent transition
metal was added. |
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