Lithium manganese phosphate nanoparticles and their manufacturing method, carbon-coated lithium manganese phosphate nanoparticles, carbon-coated lithium manganese phosphate nanoparticles assembly, lithium ion battery

摘要

The present invention exhibits a high capacity when lithium manganese phosphate is used as an active material for a lithium ion secondary battery. In the present invention, the ratio I ₂₀ /I ₂₉ of the peak intensity at 20° and the peak intensity at 29° obtained by X-ray diffraction is 0.88 or more and 1.05 or less, and the crystallite size determined from X-ray diffraction is 10 nm or more. It is a lithium manganese phosphate nanoparticle characterized by 50 nm or less.