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Polypyrrole battery conductive additive and preparation method thereof

A conductive additive, polypyrrole battery technology, applied in the direction of battery electrodes, secondary batteries, secondary battery repair/maintenance, etc., can solve the problem of low application, improve dispersion compatibility, improve mechanical stability and conductive stability sexual effect

Active Publication Date: 2018-09-28
安徽环新集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Different conductive agents have their own characteristics, and their forms also have their own advantages and disadvantages; currently, the widely used conductive agents in batteries can be divided into three categories: conductive carbon black, conductive graphite and new conductive agents. The new conductive agents mainly refer to carbon nanotubes, graphene, etc. etc., while polypyrrole, as a conductive polymer, has good conductive stability, yet its application in the battery field is still relatively low. Therefore, the purpose of the present invention is to provide a new type of conductive polymer with strong conductivity and good mechanical , a battery additive with high conductive stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of conductive additive of polypyrrole battery, it is made up of the raw material of following weight part:

[0018] Pyrrole 130, dicumyl peroxide 5, 2-mercaptobenzimidazole 1, hydroxyethylidene diphosphonic acid 2, pentaerythritol 3, acetylene carbon black 1, ethoxylated alkylphenol ammonium sulfate 0.8, acetic acid isobutyric acid Sucrose ester 1, zinc stearate 0.1, stannous octoate 0.1.

[0019] A preparation method of polypyrrole battery conductive additive, comprising the following steps:

[0020] (1) Mix acetylene carbon black and ethoxylated alkylphenol ammonium sulfate, add to deionized water 25 times the weight of the mixture, sonicate for 10 minutes, raise the temperature to 60°C, add zinc stearate, keep stirring 1 hour, get activated carbon black dispersion liquid;

[0021] (2) Get 2-mercaptobenzimidazole, join in the dehydrated alcohol of its weight 7-9 times, stir evenly, mix with pentaerythritol, stir evenly, obtain complex alcohol solution;

[00...

Embodiment 2

[0027] A kind of conductive additive of polypyrrole battery, it is made up of the raw material of following weight part:

[0028] Pyrrole 110, dicumyl peroxide 3, 2-mercaptobenzimidazole 0.6, hydroxyethylidene diphosphonic acid 2, pentaerythritol 3, acetylene carbon black 1, ethoxylated alkylphenol ammonium sulfate 0.8, acetic acid isobutyric acid Sucrose ester 1, zinc stearate 0.1, stannous octoate 0.1.

[0029] A preparation method of polypyrrole battery conductive additive, comprising the following steps:

[0030] (1) Mix acetylene carbon black and ethoxylated alkylphenol ammonium sulfate, add to deionized water 25 times the weight of the mixture, sonicate for 10 minutes, raise the temperature to 60°C, add zinc stearate, keep stirring 1 hour, get activated carbon black dispersion liquid;

[0031] (2) Get 2-mercaptobenzimidazole, join in the dehydrated alcohol of its weight 7 times, stir evenly, mix with pentaerythritol, stir evenly, obtain compound alcohol solution;

[0...

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Abstract

The invention discloses a polypyrrole battery conductive additive, comprising the following raw materials in part by weight: 110-130 parts of pyrrole, 3-5 parts of dicumyl peroxide, 0.6-1 part of mercaptobenzimidazole, 2-4 parts of hydroxyethylidene diphosphonic acid, 3-5 parts of pentaerythritol, 1-2 parts of acetylene black, 0.8-1 part of ethoxylated alkylphenol ammonium sulfate, 1-2 parts of sucrose acetate isobutyrate, 0.1-0.4 part of zinc stearate, and 0.1-0.2 part of stannous octoate. The pyrrole as a monomer is dispersed in the esterification liquid and polymerized under the action of an initiator, thereby effectively improving the dispersion compatibility of the carbon black in the polypyrrole, and further improving the mechanical stability and conductive stability of the finishedmaterial.

Description

technical field [0001] The invention belongs to the field of conductive materials, and in particular relates to a polypyrrole battery conductive additive and a preparation method thereof. Background technique [0002] Conductive additives are one of the indispensable key materials for lithium-ion batteries, especially in the high-current charging and discharging process of power-type lithium-ion batteries. Different conductive agents have their own characteristics, and their forms also have their own advantages and disadvantages; currently, the widely used conductive agents in batteries can be divided into three categories: conductive carbon black, conductive graphite and new conductive agents. The new conductive agents mainly refer to carbon nanotubes, graphene, etc. etc., while polypyrrole, as a conductive polymer, has good conductive stability, yet its application in the battery field is still relatively low. Therefore, the purpose of the present invention is to provide a...

Claims

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Application Information

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IPC IPC(8): H01M4/62H01M10/0525H01M4/36H01M10/42
CPCH01M4/36H01M4/624H01M10/0525H01M10/4235Y02E60/10
Inventor 饶素芳
Owner 安徽环新集团股份有限公司
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