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 containing carbon, in which, when a peak of the carbon that is measured by Raman scattering and is present at 2200 to 3400 cm−1 is peak-separated into peaks including five types of Voigt functions of a peak 1 having a peak top present at 2200 to 2380 cm−1, a peak 2 having a peak top present at 2400 to 2550 cm−1, a peak 3 having a peak top present at 2600 to 2750 cm−1, a peak 4 having a peak top present at 2850 to 2950 cm−1, and a peak 5 having a peak top present at 3100 to 3250 cm−1, an average of proportions of Gaussian functions in the peak 3 and the peak 4 is 90% or more and less than 100%.

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