Preparation method of high-compaction density 523-type ternary positive electrode material

The invention provides a preparation method of a high-compaction density 523-type ternary positive electrode material, and belongs to the technical field of preparation of a lithium ion battery positive electrode material. A high-compaction density and low-pH value lithium nickel cobalt manganate NC...

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Hauptverfasser: QI SHIQING, ZHI FUPENG, ZHU JINIAN, MA QIAN, HAO YALI, WANG JUANHUI, CHANG QUANZHONG, WAN YUNYUN
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ZHI FUPENG
ZHU JINIAN
MA QIAN
HAO YALI
WANG JUANHUI
CHANG QUANZHONG
WAN YUNYUN
description The invention provides a preparation method of a high-compaction density 523-type ternary positive electrode material, and belongs to the technical field of preparation of a lithium ion battery positive electrode material. A high-compaction density and low-pH value lithium nickel cobalt manganate NCM523-type ternary positive electrode is in a spherical shape, grain D50 of secondary agglomeration particle is 10-12 micrometers, and the size of primary single-crystal particle is 1.5-3 micrometers. The preparation method of the high-compaction density 523-type ternary positive electrode material comprises the steps of doping 0.1-1.0% of metal oxide into a mixture of lithium carbonate and a ternary precursor LiNiCoMn(OH) , performing primary sintering, paste washing, secondarysintering, breakage, iron removal, sieving and mixing, and finally, obtaining an NCM523-type ternary positive electrode material. By the method, the compaction density of the NCM523-type ternary positive electrode material is e
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A high-compaction density and low-pH value lithium nickel cobalt manganate NCM523-type ternary positive electrode is in a spherical shape, grain D50 of secondary agglomeration particle is 10-12 micrometers, and the size of primary single-crystal particle is 1.5-3 micrometers. The preparation method of the high-compaction density 523-type ternary positive electrode material comprises the steps of doping 0.1-1.0% of metal oxide into a mixture of lithium carbonate and a ternary precursor LiNi&lt;0.5&gt;Co&lt;0.2&gt;Mn&lt;0.3&gt;(OH) , performing primary sintering, paste washing, secondarysintering, breakage, iron removal, sieving and mixing, and finally, obtaining an NCM523-type ternary positive electrode material. 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PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title Preparation method of high-compaction density 523-type ternary positive electrode material
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