Negative electrode active material particles and a manufacturing method thereof for a non-aqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary batteries

The present invention provides a non-aqueous electrolyte negative electrode active material for a secondary battery comprising a composite particle powder of the carbide of the metal particles and a thermosetting resin or thermosetting resin, an average particle diameter of the composite particles is 5 to a lithium ion secondary battery, which comprises using a negative electrode active material and negative active material for non-aqueous electrolyte secondary battery for a nonaqueous electrolyte secondary battery is 100 [mu] m. The lithium ion secondary battery of the present invention is a non-aqueous electrolyte secondary battery volume expansion due to Li occlusion was suppressed. .BACKGROUND