Carbonaceous electrode material for secondary battery

摘要

A carbonaceous electrode having improved capacities for doping and dedoping of a cell active substance, such as lithium, and suitable for a non-aqueous solvent-type secondary battery, is constituted by a carbonaceous material having a specific microtexture. The carbonaceous material is characterized by an average (002)-plane spacing of at least 0.365 nm according to X-ray diffraction method, and also a ratio rho H/ rho B of at least 1.15 wherein rho H denotes a density measured by using helium gas as a substitution medium and rho B denotes a density measured by using butanol as a substitution medium. $$