Carbonaceous electrode material for secondary battery

摘要

A carbonaceous electrode having improved capacities of doping and dedoping 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 having an average (002)-plane spacing of at least 0.365 nm according to X-ray diffraction method, and by providing a residual carbonaceous substance showing an average (002) plane-spacing of at most 0.350 nm according to X-ray diffraction method when the carbonaceous material is treated with an H2O-N2 equi-molar gaseous mixture at 900 DEG C up to a weight reduction of 60 %.