| abstract |
(57) [Summary] [Object] To provide a method for producing a lithium nickelate battery positive electrode material which has little deterioration in battery characteristics due to repeated charge / discharge and excellent durability (cycle characteristics). SOLUTION: When producing lithium nickelate to which a third component other than nickel and lithium is added as a lithium battery cathode material, a mixed aqueous solution of a water-soluble nickel compound and a water-soluble compound of the third component to be added is prepared. , This is reacted with an aqueous solution of an alkali compound to form a coprecipitate of nickel and a third component, and the coprecipitate is dried or further calcined, and a lithium compound powder is added and mixed. And firing at a temperature in the range of 600 to 850 ° C. in an oxygen atmosphere. As the third component, the ionic radius is 0.8 to 1.5 of the ionic radius of nickel of 0.56 °. Twice, specifically, Al, Co, Fe, Mn, Mg and the like are preferable. |