Negative electrode material for non-aqueous electrolyte secondary battery and method for producing the same

摘要

A method for producing a negative electrode material for a non-aqueous electrolyte secondary battery is disclosed: which includes a step of applying a shearing force to an intermetallic compound under the presence of nitrogen. The intermetallic compound contains element (A) which reacts with nitrogen and forms a nitride, but does not react with lithium, and element (B) which does not react with nitrogen, but reacts with lithium, thereby forming a mixture containing a nitride of element (A) and a substance of element (B). Said at least one element (A) can be selected from the group A consisting of Ce, Co, Cr, Fe, La, Mn, Mo, Nb, P, Sc, Sr, Ta, Ti, V, Y, Yb, Zr, B, Ca, Mg, Na and Zn, and said at least one element (B) can be selected from the group B consisting of Ge, Sn, Pb, Sb and Bi.