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http://dx.doi.org/10.5229/JKES.2009.12.2.162

Electrochemical Behavior of Si/Cu/Graphite Composite Anode for Lithium Secondary Battery  

Kim, Hyung-Sun (Battery Research Center, Korea Institute of Science and Technology)
Chung, Kyung-Yoon (Battery Research Center, Korea Institute of Science and Technology)
Cho, Won-Il (Battery Research Center, Korea Institute of Science and Technology)
Cho, Byung-Won (Battery Research Center, Korea Institute of Science and Technology)
Publication Information
Journal of the Korean Electrochemical Society / v.12, no.2, 2009 , pp. 162-166 More about this Journal
Abstract
The carbon-coated Si/Cu powders were synthesized by mechanical ball-milling and hydrocarbon gas decomposition methods at high temperature. The carbon-coated Si/Cu powder was used as anode for lithium secondary battery and its electrochemical behavior was investigated. In addition, the carbon-coated Si/Cu/graphite composite anode material was prepared using natural graphite powder and their electrochemical characteristics were compared with natural graphite anode. The specific capacity of carbon-coated Si/Cu anode increased to the initial 10 cycles. The carbon-coated Si/Cu/graphite composite anode exhibited the reversible specific capacity of 450mAh/g and the first cycle efficiency of 81.3% at $0.25mA/cm^2$. The cycling performance of the composite anode was similar to that of pure graphite anode except the reversible specific capacity value.
Keywords
Lithium Secondary Battery; Carbon-Coated Si/Cu/Graphite Anode;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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