NEGATIVE ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY AND ELECTRODE FOR LITHIUM SECONDARY BATTERY COMPRISING THE SAME

摘要

The present invention relates to: a conductive material for a secondary battery including a graphene sheet coated with pitch; a negative electrode including the same; and a lithium secondary battery including the same. Moreover, the present invention provides a method for manufacturing the conductive material for the secondary battery. The method includes the steps of: manufacturing the pure graphene sheet; mixing the grapene sheet with coal-based pitch; and manufacturing the graphene sheet coated with the pitch by sintering a mixture, obtained in the earlier step, at high temperatures. The present invention provides the electrode including the graphene sheet, coated with the pitch, as the conductive material. Therefore, the secondary battery with enhanced cycle stability and enhanced life span properties can be manufactured.