Patent ID: 7172710

Claim:
An active material composition for a nickel positive electrode comprising; 78.6 to 85.6 weight percent of a nickel hydroxide material; 3.0 to 6.0 weight percent cobalt; 3.0 to 8.0 weight percent cobalt oxide; and 3.0 to 10.0 weight percent of an additive material comprising a metal oxide, wherein said metal oxide is one or more of: a) a single metal oxide containing Ce, said single metal oxide containg Ce being doped with a divalein, trivalent or tetravalent oxide; b) a single metal oxide contalning W; and c) a binary or higher non-stoichiornetric, solid solution, oxide containing two or more metals selected from the group consisting of Ti, Mo, V, W, Sn, Mn, In, Y, Sm, Nb, Ce, and Misch Metal.