NICKEL-COBALT-MANGANESE COMPOUND PARTICLE POWDER AND METHOD FOR PRODUCING SAME LITHIUM COMPOSITE OXIDE PARTICLE POWDER AND METHOD FOR PRODUCING SAME AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

The present invention is characterized in that the secondary particles have an average particle diameter (D50) of 3.0 to 25.0 占 퐉 based on volume and a half-width (W) of the peak in the particle size distribution on the basis of the average particle diameter (D50) X D50, which is obtained by simultaneously dropping and neutralizing a solution containing a metal salt and an alkali solution in an alkali solution, and performing a precipitation reaction. The nickel-cobalt-manganese-based compound particle powder of the present invention is useful as a precursor of a positive electrode active material used in a nonaqueous electrolyte secondary battery because of its uniform particle size, small particle size, high crystallinity, and large primary particle size.