Patent ID: 6265111
Filing Date: 2001-07-24
Classification: H01M,Y02E

Abstract:
A non-aqueous electrolyte secondary battery comprising a rechargeable positive electrode, a rechargeable negative electrode and a non-aqueous electrolyte, wherein said negative electrode comprises alloy particles having a composition represented by the formula:Li.sub.x M.sup.1.sub.a M.sup.2 (1)wherein M.sup.1 represents at least one element selected from the element group m.sup.1 consisting of Ti, Zr, V, Sr, Ba, Y, La, Cr, Mo, W, Mn, Co, Ir, Ni, Cu and Fe, M.sup.2 represents at least one element selected from the element group m.sup.2 consisting of Mg, Ca, Al, In, Si, Sn, Pb, Sb and Bi, M.sup.1 and M.sup.2 represent different elements from each other, and wherein 0.ltoreq.x.ltoreq.10, 0.1.ltoreq.a.ltoreq.10, with the proviso that 2.ltoreq.a.ltoreq.10 when M.sup.1 is composed only of Fe, and having at least two phases which are different in composition from each other.