Negative electrode carbonaceous material, method of preparing same and non-aqueous electrolyte-type secondary cell using same

摘要

A negative electrode carbonaceous material according to the present invention is suitably used for production of non-aqueous electrolyte-type secondary cell. The negative electrode carbonaceous material is in the form of a sintered carbon body produced by sintering a mesophase carbon as a carbon precursor, the sintered carbon body having a true specific gravity of 1.50 to 1.80 g/ml. The present invention is further concerned with a method of producing such a negative electrode carbonaceous material and a non-aqueous electrolyte-type secondary cell using such a negative electrode carbonaceous material. Such a true specific gravity of the carbonaceous material can be attained by controlling a spacing of (002) lattice planes to the range of 3.37 ANGSTROM (graphite) to 3.70 ANGSTROM .