Patent ID: 6764767
Filing Date: 2004-07-20
Classification: C01B,C01P,H01M,Y02E,Y10T

Abstract:
A method for producing a graphite powder that includes about 0.01 to less than 1.0 wt % of boron, the method comprising the steps of:pulverizing a carbon material at least one of prior to carbonization and after carbonization; heating the carbon material at a temperature ranging from about 1500Â° C. to less than 2200Â° C. thereby causing graphitization of the carbon material to occur, wherein boron is added to the carbon material prior to graphitization; and forming a looped closure structure at an end of a graphite c-planar layer on at least a surface of cleavage formed by shearing, wherein a density of interstitial planar sections between neighboring closure structures is not less than 100/&mgr;m.