Mitsubishi Chemical Corporation

Hisako Kondo

Shunsuke Yamada

Tooru Fuse

Naoto Maru

Daigo Nagayama

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 μm or more and 20 μm 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).

Negative electrode material for nonaqueous secondary batteries, negative electrode for nonaqueous secondary batteries, and nonaqueous secondary battery

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.

Carbon material for negative electrode of non-aqueous secondary battery, negative electrode for non-aqueous secondary battery, and non-aqueous secondary battery

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Yokohama, Japan

Hisako Kondo