▎ 摘　　要

NOVELTY - Production of positive electrode active material particles involves spray drying (S15) a suspension comprising lithium compound particles, transition metal element, graphene oxide, solvent electrolyte and solvent, heating (S17) surface and vaporizing carbon as carbon dioxide. USE - Production of positive electrode active material particles for use in secondary battery (claimed). Uses include but are not limited to mobile telephone, smart phone, notebook-type computer, portable music player, digital camera, medical device, hybrid vehicle (HEV), electric vehicle (EV), and plug-in hybrid car (PHEV), etc. ADVANTAGE - The positive electrode active material produced provides secondary batteries with improved cycle characteristics, high reliability, improved safety and excellent charging/discharging cycle characteristics. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for secondary battery. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart explaining the manufacture of the positive electrode active material particles. Preparation of starting material (S11) Lithium aluminum titanium phosphate and solvent mixing process (S12) Graphene oxide mixing process (S13) Positive electrode active material particles mixing process (S14) Spray-drying process (S15) Spray-drying process (S17)