ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND PREPARATION METHOD THEREOF

摘要

The present invention relates to a negative active material for a rechargeable lithium battery and a method of preparing the same, said negative active material comprising crystalline carbon having a dispersed element serving as graphitization catalyst therein. Said negative active material for a rechargeable lithium battery is prepared by the steps of adding an element serving as a graphitization catalyst to a carbon precursor; coking the mixture by heat-treating at 300 to 600° C. carbonizing the cokes; and graphitizing the carbide at 2800 to 3000° C.