4. The Li—Ni composite oxide particles according to claim 1, wherein the Li—Ni composite oxide particles have an average particle diameter of 1 to 20 μm and a BET specific surface area of 0.1 to 1.6 m2/g.
the Li—Ni composite oxide particles
average particle diameter
1 to 20 μm
μm
the Li—Ni composite oxide particles
BET specific surface area
0.1 to 1.6 m2/g
m2/g