5. The transition metal composite hydroxide according to claim 1, wherein the average particle size of the plate-shaped primary particles is within a range of 0.3 μm to 3 μm, and the average particle size of the fine primary particles is within a range of 0.01 μm to 0.3 μm.
plate-shaped primary particles
average particle size
0.3 μm to 3 μm
μm
fine primary particles
average particle size
0.01 μm to 0.3 μm
μm