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METHOD FOR PREPARING POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, POSITIVE ACTIVE MATERIAL PREPARED USING SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME
METHOD FOR PREPARING POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, POSITIVE ACTIVE MATERIAL PREPARED USING SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME
PURPOSE: A manufacturing method of a positive active material for lithium secondary batteries is provided to manufacture the positive active material with excellent crystallinity and uniform particle size in short time at relatively low temperatures. CONSTITUTION: A manufacturing method of a positive active material comprises a step of manufacturing a first mixed solution by dissolving a lithium source and an oxidant into a solvent; a step of manufacturing a second mixed solution by dissolving a manganese source into a solvent; a step of manufacturing a mixed solution by mixing the first mixed solution and the second mixed solution, and adding a solvent which has a boiling point of 100 C or less into the mixture; and a step of obtaining a lithium manganese composite metal oxide by carrying out a hydrothermal reaction while heating the mixed solution to 60-200 C.
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