| abstract |
It consists of a core material and a surface layer, the core has a layered crystal structure consisting of element Li, metal M and oxygen, and the molar ratio of Li to M is 0.98 to 1.01, preferably 0.99 to 1. 00, the metal M has the formula M = Co 1-a M ′ a , 0 ≦ a ≦ 0.05, and M ′ is any one of the group consisting of Al, Ga and B or The above-mentioned metal and the surface layer are made of a mixture of an element of the core material and an oxide based on inorganic N and N ′, where N is Mg, Ti, Fe, Cu, Ca, Ba, Sn , Sb, Na, Zn, and Si, and N ′ is Y, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, Sc, Ce. Any one or more metals selected from the group consisting of Pr, Nd, Gd, Dy and Er A lithium metal oxide powder for use as a cathode material in a rechargeable battery. |