Abstract: The present invention provides a carbon material composition containing a carbon material (A) and a carbon material (B), in which the carbon material (A) contains graphite containing an amorphous carbonaceous material or a graphite material, has two or more peaks in a pore size distribution measured by a mercury porosimetry, and satisfies y??0.0084x+0.13 wherein a cumulative pore volume in a range where a pore diameter is equal to or smaller than a pore diameter at a local minimum value between a peak of a smallest pore diameter and a peak of a second smallest pore diameter in the pore size distribution is defined as y (mL/g) and a coating rate of the amorphous carbonaceous material or the graphite material in the graphite is defined as x (%), and the carbon material (B) has a pellet density of 1.80/cm3 or more.

Abstract: An object of the present invention is to provide a carbon material for negative electrodes of non-aqueous secondary batteries having a high capacity, a high output, excellent cycle characteristics and a low irreversible capacity. The present invention relates to a carbon material for negative electrodes of non-aqueous secondary batteries, the carbon material comprising: (1) a composite carbon particles (A) containing elemental silicon, and (2) amorphous composite graphite particles (B) in which graphite particles (C) and amorphous carbon are composited.

Abstract: A negative electrode material for nonaqueous secondary batteries, the negative electrode material comprising carbonaceous particles (A) and silicon oxide particles (B), the carbonaceous particles (A) having a 10%-particle size displacement pressure of 10 MPa or less, the 10%-particle size displacement pressure being measured using a micro-compression testing machine by a specific measuring method, the silicon oxide particles (B) having a median diameter (D50) of 0.8 ?m or more and 20 ?m or less. It is preferred that the content of the silicon oxide particles (B) is less than 30% by weight of a total content of the carbonaceous particles (A) and the silicon oxide particles (B).

Abstract: An object of the present invention is to provide a carbon material for negative electrodes of non-aqueous secondary batteries having a high capacity, a high output, excellent cycle characteristics and a low irreversible capacity. The present invention relates to a carbon material for negative electrodes of non-aqueous secondary batteries, the carbon material comprising: (1) a composite carbon particles (A) containing elemental silicon, and (2) amorphous composite graphite particles (B) in which graphite particles (C) and amorphous carbon are composited.