Patent ID: 6485864
Filing Date: 2002-11-26
Classification: C01B,C01P,H01M,Y02E

Abstract:
A process for producing a boron-substituted graphite, the boron-substituted graphite containing nitrogen-bonded boron atoms, the nitrogen-bonded boron atoms being present in an amount of 10 atom % or less of surface layer elements relative to whole-substituted boron atoms, which process comprises the steps of:a) heating a feed fine particulate mixture of an infusibilized carbonaceous material and a boron compound, whereby the carbonaceous material is carbonized into a carbon structure; b) raising a temperature of the resulting heated fine particulate mixture to a graphitization treatment temperature in an inert atmosphere which is unreactive with boron; c) retaining said graphitization treatment temperature for a time sufficient to allow graphitization of the carbon structure to proceed to a desired extent; and d) cooling the resulting graphitized mixture to a temperature of 100Â° C. in not more than 100 hours.