ANODE ELECTRODE MATERIAL FOR NONAQUEOUS ELECTROLYTE BATTERY, ANODE AND NONAQUEOUS ELECTROLYTE BATTE

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PROBLEM TO BE SOLVED : To provide an anode electrode material which can realize a nonaqueous electrolyte battery excellent in a discharge capacity and a charge/discharge cycle life. SOLUTION : The anode material for a nonaqueous electrolyte battery is composed of an intermetallic compound as main phase having a composition as shown in the following general formula and R, M, Si as indispensable elements. The general formula : RMxSiyTzZαXβ, wherein R is for at least one kind selected from rare earth elements including Y, M for at least one kind selected from Fe, Co, Mn, Cu, Cr and Ni, T for at least one kind selected from V, Nb, Ta, Mo and W, Z for at least one kind selected from a group of elements selected from Sn, Al, Sb and In, and X for one kind selected from B, C, N and P, and wherein 0.8≤x≤1.1, 2.7≤y≤3.2, 0≤z≤0.5, 0.8≤x+z≤1.2, 0≤α≤0.5, 2.7≤α+y≤3.3 and 0≤β≤1 (in atomic percentage). COPYRIGHT : (C)2008, JPO&INPIT