Patent ID: 6497854
Filing Date: 2002-12-24
Classification: C01G,C01P,H01M,Y02E

Abstract:
A method for producing a cathode material for a lithium secondary battery, wherein the cathode material is a layered compound having a general formula of LixNi1-a-b-c-dCoaM1bM2cM3dO2, wherein M1, M2 and M3 are selected from the group consisting of Ti, Mg, B and Al, and wherein the reference characters x, a, b, c and d satisfy: 1.0&lE;x&lE;1.2; 0.1&lE;a&lE;0.3; 0.005&lE;b&lE;0.1; 0.005&lE;c&lE;0.1; 0.005&lE;d&lE;0.1; and 0.115&lE;a+b+c +d&lE;0.4, comprising the steps of: coprecipitating Ni1-a-b-c-dCoaM1bM2cM3d(OH)2, mixing Ni1-a-b-c-dCoaM1bM2cM3d(OH)2 and Li compound, and firing the resultant mixture at 480 to 850Â° C.