NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY

摘要

A method for producing a negative electrode material for lithium ion secondary battery comprising the steps of: pressing a mixed liquid comprising particles (B) containing an element capable of occluding/releasing lithium ions, carbon nanotubes (C) of which not less than 95% by number have a fiber diameter of not less than 5 nm and not more than 40 nm, and water into a pulverizing nozzle of a high-pressure dispersing device to obtain a paste or a slurry; drying the paste or the slurry into a powder; and mixing the powder and carbon particles (A). A negative electrode material for lithium ion secondary battery comprising carbon particles (A); and flocculates in which particles (B) containing an element capable of occluding/releasing lithium ions and carbon nanotubes (C) of which not less than 95% by number has a fiber diameter of not less than 5 nm and not more than 40 nm are uniformly composited.