PREPARATION METHOD OF CATHODE ACTIVE MATERIALS FOR LITHIUM SECONDARY BATTERY

PURPOSE: A manufacturing method of a positive electrode active material is provided to provide a positive electrode active material with improved electrochemical properties. CONSTITUTION: A manufacturing method of a positive electrode active material for lithium secondary batteries comprises a step...

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Hauptverfasser:	LEE, EUN AH, SEO, HYO REE, KIM, KEON, YI, CHEOL WOO
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ELECTRICITY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE: A manufacturing method of a positive electrode active material is provided to provide a positive electrode active material with improved electrochemical properties. CONSTITUTION: A manufacturing method of a positive electrode active material for lithium secondary batteries comprises a step of manufacturing a solution mixed of KMnO4 and ethanol with distilled water; a step of putting the mixed solution into an autoclave container, stirring the solution, and conducting a hydrothermal synthesis reaction; a step of washing the reaction products with distilled water and ethanol several times and drying the washed reaction products; a step of carrying out a mixing reaction by mixing MnO(OH) with LiOH·H2O; and a step of heat-treating the lamellar Li2MnO3, which is the reaction product of the mixing step, in the atmosphere.