| abstract |
PROBLEM TO BE SOLVED: To provide a method for efficiently producing a lithium transition metal composite oxide having excellent resistance characteristics when used as a positive electrode active material of a lithium secondary battery. SOLUTION: A lithium hydroxide anhydride for producing a lithium transition metal composite oxide, wherein the lithium hydroxide anhydride for producing a lithium transition metal composite oxide is dissolved in ethyl alcohol in which lithium hydroxide is saturated and dissolved at the time of laser diffraction measurement. The light transmittance is 80 ± 5%, dispersion is performed for 1 minute with an ultrasonic oscillator with an output of 30 W and a frequency of 22.5 kHz, and a real part 1.14 and an imaginary part 0 as a refractive index by laser diffraction. A lithium hydroxide anhydride for producing a lithium transition metal composite oxide, wherein the maximum particle size is 40 μm or less when the particle size distribution is measured using 0.00. [Selection figure] None |