| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium nickelate-based positive electrode active material arranged so that the generation of gas can be suppressed, and enables the achievement of a high charge and discharge capacities and good cycle characteristics.SOLUTION: A method for manufacturing a positive electrode active material for nonaqueous electrolyte secondary batteries comprises: a cleaning step of preparing cleaned particles by rinsing, by deionized water, core particles including a lithium transition metal complex oxide expressed by the general formula, LiNiMO(where 0.95≤a≤1.05; 0≤x≤0.25; M is at least one element selected from Co, Mn and Al); a mixing step of preparing mix particles by mixing the cleaned particles with a boron compound containing oxygen; and a thermal treatment step of performing a thermal treatment on the mix particles at a thermal treatment temperature of 100-400°C, thereby preparing the positive electrode active material. |
