| abstract |
The lithium transition metal-based compound powder for a lithium secondary battery positive electrode material capable of achieving high load characteristics such as rate and output characteristics and having a high density is composed of a lithium transition metal-based compound having a function of inserting and detaching lithium ions as a main component. A lithium transition metal-based compound powder comprising a crystal structure belonging to a layered structure, wherein the primary particles aggregate to form secondary particles, and the ratio A of the median diameter A of the secondary particles to the average diameter (average primary particle size B) / B is in the range of 8 to 100, and CuK In the powder X-ray diffraction measurement using the ray, when the half width of the (110) diffraction peak at which the diffraction angle 2θ is around 64.5 ° is set to FWHM (110), 0.01 FWHM (110) It is represented by 0.5. |