| 摘要 |
A non-aqueous electrolyte secondary battery having an improved negative electrode is disclosed. The negative electrode comprises alloy particles having a composition represented by the formula:wherein M1 represents at least one element selected from the element group m1 consisting of Ti, Zr, V, Sr, Ba, Y, La, Cr, Mo, W, Mn, Co, Ir, Ni, Cu and Fe, M2 represents at least one element selected from the element group m2 consisting of Mg, Ca, Al, In, Si, Sn, Pb, Sb and Bi, M1 and M2 represent different elements each other, and wherein 0<=x<=10, 0.1<=a<=10, with the proviso that 2<=a<=10 when M1 is composed only of Fe, and having at least two phases which are different in composition each other.
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