Patent ID: 7410511

Claim:
A production method of a positive electrode active material for a non-aqueous electrolyte secondary battery, comprising: (a) a step of providing a nickel hydroxide (x) which is represented by the general formula Ni 1−(x+y) Co x M y (OH) 2 , where 0.1≦x≦0.35 and 0.03≦y≦0.2 are satisfied and M is at least one selected from the group consisting of Al, Ti and Sn; (b) a step of heating said nickel hydroxide (x) at a temperature not lower than 800° C. and not higher than 950° C. to produce a nickel oxide (y) which is represented by the general formula Ni 1−(x+y) Co x M y O, where 0.1≦x≦0.35 and 0.03≦y≦0.2 are satisfied and M is at least one selected from the group consisting of Al, Ti and Sn; and (c) a step of mixing said nickel oxide (y) with a lithium compound to obtain a mixture and heating said mixture at a temperature not lower than 700° C. and not higher than 850° C. to produce a lithium-containing composite oxide (z) which is represented by the general formula LiNi 1−(x+y) Co x M y O 2 , where 0.1≦x≦0.35 and 0.03≦y≦0.2 are satisfied and M is at least one selected from the group consisting of Al, Ti and Sn.