Additive for positive electrode of lithium secondary battery, method for manufacturing same, and lithium secondary battery comprising same

Additive for positive electrode of lithium secondary battery, method for manufacturing same, and lithium secondary battery comprising same

The present invention provides an additive for a positive electrode of a lithium secondary battery, the additive comprising a lithium transition metal oxide, Li3PO4, Li5AlO4, and Li3BO3. The lithium transition metal oxide has an aluminum doped form. An additive comprising a lithium transition metal...

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Hauptverfasser: JUNG WANG MO, PARK BYUNGUN, ZHENG GAITING, YOO TAE GU, LI BAOLAN
Format: Patent
Sprache:chi ; eng
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator JUNG WANG MO
PARK BYUNGUN
ZHENG GAITING
YOO TAE GU
LI BAOLAN
description The present invention provides an additive for a positive electrode of a lithium secondary battery, the additive comprising a lithium transition metal oxide, Li3PO4, Li5AlO4, and Li3BO3. The lithium transition metal oxide has an aluminum doped form. An additive comprising a lithium transition metal oxide and Li3PO4, Li5AlO4, and Li3BO3 has a function of improving battery stability when used in a positive electrode of a lithium secondary battery. Specifically, when used in a positive electrode of a lithium secondary battery, a general lithium transition metal oxide causes a side reaction with an electrolyte, thereby causing a problem of reduced stability such as generation of gas in the battery, however, Li3PO4, Li5AlO4, and Li3BO3 are uniformly mixed with the lithium transition metal oxide or some of them form a partial coating, and thus, the stability of the battery is reduced. Or a portion of the aluminum is doped into the lithium transition metal oxide, thereby suppressing the lithium transition metal oxid
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ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title Additive for positive electrode of lithium secondary battery, method for manufacturing same, and lithium secondary battery comprising same
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