Abstract: To provide a nonaqueous secondary battery exhibiting a sufficiently small charge/discharge irreversible capacity in the initial cycle, exhibiting an excellent charge acceptance and excellent cycle characteristics, even when the negative electrode material-containing active material layer on a current collector is highly densified so as to obtain a high capacity.

Abstract: To provide a nonaqueous secondary battery exhibiting a sufficiently small charge/discharge irreversible capacity in the initial cycle, exhibiting an excellent charge acceptance and excellent cycle characteristics, even when the negative electrode material-containing active material layer on a current collector is highly densified so as to obtain a high capacity.

Abstract: 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.