Patent ID: 6335122
Filing Date: 2002-01-01
Classification: H01M,Y02E

Abstract:
A carbonaceous electrode material for a non-aqueous secondary battery, comprising a carbonaceous material having a true density as measured by a butanol substitution method of at most 1.46 g/cm3, a true density as measured by a helium substitution method of at least 1.7 g/cm3, a hydrogen-to-carbon atomic ratio H/C of at most 0.15 as measured according to elementary analysis, a BET specific surface area of at most 50 m2/g as measured by nitrogen adsorption BET method, and a carbon dioxide adsorption capacity of at least 10 ml/g, wherein the carbonaceous electrode material has been obtained by carbonizing at least one of organic materials originated from genus Pleioblastus and genus Bambusa belonging to bamboo genera of family Gramineae.