Abstract: Various kinds of metals were coated on synthetic graphite in order to investigate the relationship between
film characteristics and their electrochemical performance. Gas suspension spray coating method was employed for
the coating of synthetic graphite. In our experimental range, all of the metal coated synthetic graphite showed the
higher capacity than that of raw material at high C-rate mainly due to decrease in impedance of passivation film.
In cyclic voltammetry experiments, silver-coated and tin-coated graphite anodes found the lithium-alloy reaction. Considering smaller amount of metal coating, the most increase in discharge capacity was caused by improvement of
conductivity of the electrode. When single-component metal was coated, silver-coated graphite anode exhibited the
highest discharge capacity and better cycleability. Double components of silver-nickel coated active material showed
the highest discharge capacity, rate capability and the best cycle performance in the range of our experiments.
Key words: Synthetic graphite, Metal coating, Anode, Lithium secondary battery
