Composite modified graphite negative electrode material and preparation method thereof

Composite modified graphite negative electrode material and preparation method thereof

The invention discloses a composite modified graphite negative electrode material and a preparation method thereof. The preparation method comprises the following steps: 1) mixing graphite, an oxidantand an intercalator according to a certain mass ratio to obtain a mixed solution; 2) carrying out st...

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Hauptverfasser: LU WEN, LIU ZHEDONG, XIANG FUWEI, CHEN XIAOCHUN
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Sprache:chi ; eng
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BASIC ELECTRIC ELEMENTS
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
COMPOUNDS THEREOF
ELECTRICITY
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator LU WEN
LIU ZHEDONG
XIANG FUWEI
CHEN XIAOCHUN
description The invention discloses a composite modified graphite negative electrode material and a preparation method thereof. The preparation method comprises the following steps: 1) mixing graphite, an oxidantand an intercalator according to a certain mass ratio to obtain a mixed solution; 2) carrying out stirring reaction on the mixed solution under a constant temperature condition to obtain an intercalation product; and 3) repeatedly washing the intercalation product with deionized water until the pH value of the filtrate is 57, drying the washed intercalation product, heating to a target temperature in an inert atmosphere, and keeping the temperature for a specific time to obtain the target object. The composite modified graphite negative electrode material prepared by the method disclosed by the invention is manganese oxide loaded sulfur-free micro-expanded graphite, and has nanopores and properly enlarged graphite lamellar spacing. The method has the advantages of being high in operability, easy to produce, low i
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The preparation method comprises the following steps: 1) mixing graphite, an oxidantand an intercalator according to a certain mass ratio to obtain a mixed solution; 2) carrying out stirring reaction on the mixed solution under a constant temperature condition to obtain an intercalation product; and 3) repeatedly washing the intercalation product with deionized water until the pH value of the filtrate is 57, drying the washed intercalation product, heating to a target temperature in an inert atmosphere, and keeping the temperature for a specific time to obtain the target object. The composite modified graphite negative electrode material prepared by the method disclosed by the invention is manganese oxide loaded sulfur-free micro-expanded graphite, and has nanopores and properly enlarged graphite lamellar spacing. 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subjects BASIC ELECTRIC ELEMENTS
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
COMPOUNDS THEREOF
ELECTRICITY
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title Composite modified graphite negative electrode material and preparation method thereof
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