CARBONACEOUS ELECTRODE MATERIAL FOR SECONDARY BATTERY AND PROCESS FOR PRODUCTION THEREOF

摘要

A carbonaceous electrode having improved capacities for doping and dedoping of a cell active substance, such as lithium, and suitable for a nonaqueous solvent-type secondary battery, is constituted by a carbonaceous material obtained by carbonizing an organic material of plant origin, and having a pore volume of at least 0.55 ml/g of pores having a pore diameter of at most 5 pm as measured by mercury injection method and a specific surface area of at most 100 m<2>/g as measured by the nitrogen adsorption BET method. The carbonaceous material may preferably be produced by carbonizing an organic material of plant origin in contact with a flowing inert gas at a temperature of 700 - 1500 DEG C under a pressure exceeding 10 kPa.