Disclosed is an anode active material, comprising: (a) a carbonaceous
material; and (b) a carbide coating layer partially or totally formed on
a surface of the carbonaceous material, the carbide coating layer
comprising at least one element selected from the group consisting of
metals and metalloids. An anode obtained by using the anode active
material and an electrochemical device comprising the anode are also
disclosed. The carbonaceous material comprises a coating layer of
metal-/metalloid-carbide obtained by treating it at high temperature
under inert atmosphere, wherein the coating layer has increased
interfacial boding force to the carbonaceous material and thus shows
minimized reactivity to lithium. The carbonaceous material as anode
active material can minimize the irreversible anode capacity needed for
the formation of an SEI film during the first charge/discharge cycle,
thereby providing high capacity, high efficiency and significantly
improved anode qualities.