Patent ID: 7183018
Filing Date: 2007-02-27
Classification: C22C,H01M,Y02E,Y02P

Abstract:
1. A method for producing an electrode material said electrode material containing a particulate comprising an amorphous Sn.A.X alloy with a substantially non-stoichiometric ratio composition, wherein A indicates at least one kind of an element selected from the group consisting of transition metal elements, and X indicates at least one kind of an element selected from the group consisting of O, F, N, Mg, Ba, Sr, Ca, La, Ce, Si, Ge, C, P, B, Pb, Bi, Sb, Al, Ga, In, Tl, Zn, Be, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, As, Se, Te, Li and S, wherein X is optionally present and the content of the constituent element Sn of the amorphous Sn.A.X alloy is Sn/(Sn.A.X)=20 to 80 atomic %, wherein said particulate has a specific surface area of more than 1 m 2 /g, wherein an average particle size of said particulate is in a range of from 0.5 μm to 20 μm, wherein if said particulate contains O, then said particulate contains O in an amount in the range of from 0.05% by weight to 5% by weight, and wherein if said particulate contains F, then said particulate contains F in an amount in the range of from 0.05% by weight to 5% by weight, said method comprising the steps of: (a) mixing raw materials for obtaining said particulate, wherein the raw materials comprise Sn and A, and optionally comprise X; (b) alloying the raw materials; and (c) amorphizing alloys of the raw materials, wherein the steps (a), (b), and (c) are conducted directly and concurrently in a grinding apparatus.