ADDITIVE FOR POSITIVE ELECTRODE OF LITHIUM SECONDARY BATTERY, METHOD FOR MANUFACTURING SAME, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Provided is an additive for a positive electrode of a lithium secondary battery, the additive comprising a lithium transition metal oxide, Li3PO4, and Li5AlO4. The lithium transition metal oxide is doped with aluminum. The additive comprising Li3PO4 and Li5AlO4 along with the lithium transition meta...

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Bibliographische Detailangaben
Hauptverfasser:	PARK, Byungchun, LEE, Boram, YOO, Tae Gu, JUNG, Hae Jung, JUNG, Wang Mo
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F ELECTRICITY INORGANIC CHEMISTRY METALLURGY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	Provided is an additive for a positive electrode of a lithium secondary battery, the additive comprising a lithium transition metal oxide, Li3PO4, and Li5AlO4. The lithium transition metal oxide is doped with aluminum. The additive comprising Li3PO4 and Li5AlO4 along with the lithium transition metal oxide has the function of improving battery stability when applied to a positive electrode of a lithium secondary battery. Specifically, typical lithium transition metal oxides, when applied to a positive electrode of a lithium secondary battery, have the issue of reducing stability, such as by causing side reactions with an electrolyte solution and thereby generating gas in the battery. However, the Li3PO4 and Li5AlO4 are uniformly mixed with the lithium transition metal oxide or form a portion of a coating layer, and the lithium transition metal oxide is doped with a portion of the aluminum, and thus side reactions between the lithium transition metal oxide and the electrolyte solution are suppressed.