CARBONACEOUS MATERIAL HAVING MULTILAYER STRUCTURE, PROCESS FOR PRODUCING THE CARBONACEOUS MATERIAL, AND NONAQUEOUS RECHARGEABLE BATTERY USING THE CARBONACEOUS MATERIAL

摘要

It is aimed at providing: a negative electrode material for a nonaqueous secondary battery, which has a higher capacity, is low in irreversible capacity upon initial charge and discharge, and has excellent cycle characteristics; and a nonaqueous secondary battery adopting the negative electrode material. The object is achieved by: a multi-layer structured carbonaceous material obtained by mixing graphitic carbon particles with an organic compound and by thermally treating the mixture, wherein loop structures are present at an edge portion of each of the graphitic carbon particles, and wherein the graphitic carbon particles have carbonized products of the organic compound affixed to surfaces of the particles, respectively, while maintaining the loop structures; and a nonaqueous secondary battery adopting the multi-layer structured carbonaceous material.