Positive electrode material for lithium ion secondary battery, positive electrode for lithium ion secondary battery, and lithium ion secondary battery

Abstract

A positive electrode material for a lithium ion secondary battery, including core particles and a carbonaceous film coating a surface of the core particles, in which in a Raman spectrum analysis of the carbonaceous film, in a case where a peak intensity of a spectrum in a wave number band of 1,200 to 1,400 cmis set as D, a minimum intensity of 1,400 to 1,550 cmis set as V, and a peak intensity of the spectrum of 1,550 to 1,700 cmis set as G, an average D/G is 0.77 or more and 0.98 or less and an average V/G is 0.50 or more and 0.66 or less, and in a case where the average D/G is set as a and the average V/G is set as b, X falls within a range of −0.1≤X≤0.1 in Expression X=a−1.47b.