| 摘要 |
PURPOSE: A manufacturing method of a positive electrode active material is provided to provide a positive electrode material particle which can provide excellent charging and discharging capacity in a high current condition. CONSTITUTION: A manufacturing method of a positive electrode active material comprises: a step of manufacturing manganese sulfate, iron sulfate, and lithium phosphate and/or lithium hydrogen phosphate in water to manufacture suspension; a step of synthesizing a primary particle from lithium compound by injecting the suspension into an airtight pressure container and conducting a hydrothermal synthesization; a step of manufacturing a particle dispersion, which comprises the primary particle and organic material, and forming an assembling particle by spraying granulating and drying the particle dispersion; a step of obtaining secondary particles of which carbon content is 30-70 weight% to the assembling particles before sintering by sintering the assembling particles. |
