METHOD FOR MANUFACTURING COATED COMPLEX OXIDE PARTICLES FOR POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY ARRANGED BY USE OF COATED COMPLEX OXIDE PARTICLES MANUFACTURED THEREBY

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing appropriate complex oxide particles for a positive electrode active material even in the case of using a positive electrode active material of a lithium ion secondary battery, which is easy to cause gelation.SOLUTION: A method for manufacturing coated complex oxide particles comprises: a thermal treatment step where particles subjected to a thermal treatment are obtained; a sintering step where complex oxide particles are obtained; and additionally, coating the particles with CMC(carboxymethylcellulose) into the coated complex oxide particles. The method makes possible to prevent gelation of paste which is a mixture of a positive electrode active material, a binding agent and a conductive material, and to have a good battery property.SELECTED DRAWING: Figure 1