Secondary battery negative electrode material binder and preparation method thereof

The invention relates to the technical field of secondary batteries, in particular to a secondary battery negative electrode material binder and a preparation method thereof. The present invention provides a secondary battery negative electrode material binder, the binder comprises a modified polyac...

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Bibliographische Detailangaben
Hauptverfasser:	WEN ZIHAO, KONG MING ZHE, TANG CONGCONG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOSITIONS BASED THEREON DYES ELECTRICITY MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:	The invention relates to the technical field of secondary batteries, in particular to a secondary battery negative electrode material binder and a preparation method thereof. The present invention provides a secondary battery negative electrode material binder, the binder comprises a modified polyacrylic acid copolymer, the modified polyacrylic acid copolymer is generated by a reaction of sulfonate having a preset structure and polyacrylic acid, the modified polyacrylic acid copolymer contains a carboxylic acid side chain and a sulfonate side chain, the binder is used in a secondary battery, and the secondary battery negative electrode material binder can be used as a secondary battery negative electrode material. Carboxylic acid molecules in a carboxylic acid side chain generate sodium carboxylate/lithium carboxylate in the first cycle process of the battery, and a protective layer is generated on the surface of the hard carbon negative electrode to coat the hard carbon negative electrode, so that the proble