Cathode active material, non-aqueous electrolyte secondary battery using the same, and manufacturing method of cathode active material

Cathode active material, non-aqueous electrolyte secondary battery using the same, and manufacturing method of cathode active material

A cathode active material has: a composite oxide particle containing at least lithium Li and cobalt Co; and a coating layer provided in a part of the composite oxide particle and having an oxide containing Li and an element of one of nickel Ni, manganese Mn, and cobalt Co. A ratio [Ni(T)Co(S)/Ni(S)C...

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Hauptverfasser: WATANABE HARUO, OOYAMA TOMOYO, ISAGO MASAYOSHI
Format: Patent
Sprache:chi ; eng
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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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creator WATANABE HARUO
OOYAMA TOMOYO
ISAGO MASAYOSHI
description A cathode active material has: a composite oxide particle containing at least lithium Li and cobalt Co; and a coating layer provided in a part of the composite oxide particle and having an oxide containing Li and an element of one of nickel Ni, manganese Mn, and cobalt Co. A ratio [Ni(T)Co(S)/Ni(S)Co(T)] of an atomic ratio [Ni(T)/Co(T)] of Ni to Co as an average of the whole cathode active material to an atomic ratio [Ni(S)/Co(S)] of Ni to Co in the surface of the cathode active material is larger than a ratio [Mn(T)Co(S)/Mn(S)Co(T)] of an atomic ratio [Mn(T)/Co(T)] of Mn to Co as an average of the whole cathode active material to an atomic ratio [Mn(S)/Co(S)] of Mn to Co in the surface of the cathode active material.
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subjects 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
title Cathode active material, non-aqueous electrolyte secondary battery using the same, and manufacturing method of cathode active material
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