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http://dx.doi.org/10.3740/MRSK.2005.15.1.066

A Study on Effect of Heat Treatment on Electrochemical Characteristics of Silicon-coated Graphite  

Lee Myungro (Department of Materials Science & Engineering, Korea University)
Byun Dongjin (Department of Materials Science & Engineering, Korea University)
Jeon Bub Ju (Eco-Nano Research Center, Korea Institute of Science and Technology)
Lee Joong Kee (Eco-Nano Research Center, Korea Institute of Science and Technology)
Publication Information
Korean Journal of Materials Research / v.15, no.1, 2005 , pp. 66-72 More about this Journal
Abstract
Surface modification of the silicon-coated graphite was carried out at $200^{\circ}C\~800^{\circ}C$ under hydrogen atmosphere. The silicon-coated graphites were prepared by fluidized-bed spray coating method. The components of silicon films prepared on the graphite consist of SiO, $SiO_x\;(1 of heat treatment brought on the higher fraction of SiO and $SiO_x$ than that of $SiO_2$. However, inactive $SiO_2$ fraction increases with increase of the heat treatment temperature. The high content of SiO and $SiO_x$ in the silicon film on graphite leads to the higher discharge capacity in our experimental range.
Keywords
lithium ion batteries; anode; graphite; silicon; heat treatment;
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