| 摘要 |
PURPOSE: A manufacturing method of a positive electrode active material is provided to control the size of the positive electrode active material by using cetyltrimethyl ammonium bromide when synthesizing a LiFePO4 positive electrode active material. CONSTITUTION: A manufacturing method of a positive electrode active material comprises: a step of dissolving lithium salt, ferrous salt, phosphate salt, and cetyltrimethylammonium bromide into an organic solvent; a step of putting the mixture solution into a reactor; a step of heating the reactor; a step of precipitating A LiFePO4 precursor by gravity difference through maintaining the temperature of the reactor; a step of cleaning and drying the precipitate; and a step of obtaining a LiFePO4 positive electrode active material by heat-treating the dried precipitate. |
