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

Surface modification of the silicon-coated graphite was carried out at 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 than that of . However, inactive fraction increases with increase of the heat treatment temperature. The high content of SiO and in the silicon film on graphite leads to the higher discharge capacity in our experimental range.