METHOD FOR MANUFACTURING ELCTRODE ACTIVE MATERIAL FOR SECONDARY BATTERY WITH EXCELLENT ELECTROCHEMICAL PROPERTY USING ULTRASOUND AND METHOD FOR MANUFACTURING LITUIUM SECONDARY BATTERY USING ELCTRODE ACTIVE MATERIAL MANUFACTURED BY THE SAME

摘要

PURPOSE: A manufacturing method of an electrode active material for a secondary battery is provided to easily and quickly manufacture a positive electrode material for a high efficiency secondary battery with high crystallinity and a wide reaction area by using ultrasonic waves. CONSTITUTION: A manufacturing method of an electrode active material for a secondary battery comprises a step of manufacturing an acid-mixed solution by applying ultrasonic waves while adding an acid solution into a transition metal precursor-containing aqueous solution (S110); a step of conducting the centrifugation of the acid-mixed solution (S120); a step of applying ultrasonic waves to the supernatant of the centrifugation-treated solution while mixing the supernatant with a reductant, and stirring the mixture (S130); a step of filtering the supernatant mixture solution (S140); a step of drying the filtered material (S150); and a step of synthesizing an electrode active material by drying the filtered material in an inert gas atmosphere (S160). [Reference numerals] (AA) Start; (BB) End; (S110) Sep of applying ultrasonic waves and adding an acid solution into a transition metal precursor-containing aqueous solution; (S120) Step of conducting a centrifugation; (S130) Step of mixing the supernatant of the centrifugation-treated solution with a reductant, applying ultrasonic waves, and stirring; (S140) Step of filtering the supernatant mixture solution; (S150) Step of drying the filtered material; (S160) Step of drying the dried filtered material in an inert gas atmosphere