LITHIUM COBALT OXIDE POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR AND LITHIUM ION SECONDARY BATTERY

LITHIUM COBALT OXIDE POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR AND LITHIUM ION SECONDARY BATTERY

The present invention provides a lithium cobalt oxide positive electrode material, that is, a doped lithium cobalt oxide material: A general formula of doped lithium cobalt oxide is LiCoMaMbO, where 0 ≤ x ≤ 0.01, 0 ≤ y ≤ 0.01, and -0.05 ≤ z ≤ 0.08; Ma is a doped monovalent element, and is at least o...

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Hauptverfasser: LI, Yangxing, LEI, Dan
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Sprache:eng ; fre ; ger
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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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LEI, Dan
description The present invention provides a lithium cobalt oxide positive electrode material, that is, a doped lithium cobalt oxide material: A general formula of doped lithium cobalt oxide is LiCoMaMbO, where 0 ≤ x ≤ 0.01, 0 ≤ y ≤ 0.01, and -0.05 ≤ z ≤ 0.08; Ma is a doped monovalent element, and is at least one of Al, Ga, Hf, Mg, Sn, Zn, or Zr; and Mb is a doped polyvalent element, and is at least one of Ni, Mn, V, Mo, Nb, Cu, Fe, In, W, or Cr. Through substitutional doping of a monovalent element, mutation of a layered structure caused by lithium deintercalation is minimized. Through interstitial doping of a polyvalent element, oxidation of Cois alleviated and delayed during charging.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title LITHIUM COBALT OXIDE POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR AND LITHIUM ION SECONDARY BATTERY
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