| abstract |
A kind of lithium metal oxide powder as the cathode material in rechargeable battery, it is made of a kind of inner core material and a superficial layer, the inner core has a kind of layered crystal structure, the structure is made of element Li, metal M and oxygen, wherein the molar ratio of Li and M is between 0.98 and 1.01 and preferably between 0.99 and 1.00, and wherein metal M has formula M=Co 1‑a M' a , wherein 0≤a≤0.05, any one or more of metal of group that wherein M' is made of Al, Ga and B；And the superficial layer is made of a kind of mixture of the element and inorganic N- and N'- base oxide of the inner core material, any one or more of metal of group that wherein N is made of Mg, Ti, Fe, Cu, Ca, Ba, Sn, Sb, Na, Zn and Si；And the wherein any one or more of metal of group that N' is made of Y, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, Sc, Ce, Pr, Nd, Gd, Dy and Er. |