METHOD FOR PRODUCING TRANSITION METAL HYDROXIDE PARTICLES, METHOD FOR PRODUCING LITHIUM TRANSITION METAL COMPOSITE OXIDE, METHOD FOR PRODUCING POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, METHOD FOR PRODUCING LITHIUM SECONDARY BATTERY, AND TRANSITION METAL HYDROXIDE PARTICLES

摘要

To provide a method for producing transition metal hydroxide particles for use in producing a lithium transition metal composite oxide which is a lithium-excess active material having a high sphericity and a high apparent density; a method for producing the lithium transition metal composite oxide, and to provide lithium transition metal hydroxide particles which are advantageous for handling in producing the lithium transition metal composite oxide.SOLUTION: Provided is a method for producing transition metal hydroxide particles for use in producing a lithium transition metal composite oxide that has α-NaFeO-type crystalline structure, comprises Mn and at least one of Ni and Co as transition metals (Me) and has a molar ratio Li/Me of more than 1 and a molar ratio Mn/Me of more than 0.5 by introducing transition metal carbonate particles into an aqueous solution of an alkali metal hydroxide. The transition metal hydroxide particles have a powder press density of more than 2.31 g/cmand a ratio of a tap density to the powder press density that is 0.50 or more. Also provided is a method for producing the lithium transition metal composite oxide by mixing with a lithium compound and calcining.SELECTED DRAWING: Figure 1