Positive electrode active material for non-aqueous electrolyte secondary battery, positive electrode, and secondary battery

• Main Authors: Hara, Tomitaro, Kuzushima, Yusuke
• Format: Patent
• Language: English
• Published: 28.12.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

A positive electrode active material for a non-aqueous electrolyte secondary battery according to the present invention is characterized by including positive electrode active material particles, and a carbonaceous coating film formed on the surface of the positive electrode active material particle and including a plurality of carbon hexagonal network planes, wherein the carbonaceous coating film is formed so that a Raman spectrum, in which a ratio ID/IG between a peak intensity ID of the D band and a peak intensity IG of the G band is 0.9 or lower and the full width at half maximum of the peak of the G band is 80 cm−1 or smaller, is measured.