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Consumer battery diaphragm

A battery separator and consumer technology, applied in the field of battery materials, can solve the problems of affecting battery cycle life, poor gas permeability of polyolefin separators, and inability to meet the rapid charge and discharge of batteries, etc., to achieve low oxidation resistance and hydrophilicity Good, safe to use

Active Publication Date: 2016-08-31
华富(江苏)锂电新技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the polyolefin separator has poor air permeability and cannot well meet the needs of rapid charging and discharging of the battery, which affects the cycle life of the battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Consumer battery separators, see figure 1 ,include

[0022] A base layer 1, the base layer 1 is a composite layer of glass fiber and polyvinyl alcohol fiber;

[0023] The modified layer 2 arranged on the surface of the base layer 1; the modified layer 2 includes a polypropylene material matrix 3 and porous alumina ultrafine powder 4 dispersed in the polypropylene material matrix 3, ceramic particles 5 and phase change microspheres 5 ;

[0024] The phase change microsphere 5 is made of the following components by weight: 40 parts of chlorinated paraffin, 2 parts of glyceryl monostearate, 1 part of sodium dodecylbenzenesulfonate, ethylene terephthalate 12 parts of ester, 4 parts of 2-acrylamido-2-methylpropanesulfonic acid, 6 parts of dimethylaminoethyl acrylate, 1 part of terephthalic acid, 3 parts of graphite, 2 parts of silicon dioxide, decahydrate sulfuric acid 20 parts of sodium, 10 parts of ammonium sulfate, 10 parts of sodium bisulfate, 3 parts of silicon carbid...

Embodiment 2

[0032] Consumer battery separators, see figure 1 ,include

[0033] A base layer 1, the base layer 1 is a composite layer of glass fiber and polyvinyl alcohol fiber;

[0034] The modified layer 2 arranged on the surface of the base layer 1; the modified layer 2 includes a polypropylene material matrix 3 and porous alumina ultrafine powder 4 dispersed in the polypropylene material matrix 3, ceramic particles 5 and phase change microspheres 5 ;

[0035] The phase change microsphere 5 is made of the following components by weight: 60 parts of chlorinated paraffin, 1 part of glyceryl monostearate, 3 parts of sodium dodecylbenzenesulfonate, ethylene terephthalate 8 parts of ester, 6 parts of 2-acrylamido-2-methylpropanesulfonic acid, 4 parts of dimethylaminoethyl acrylate, 3 parts of terephthalic acid, 1 part of graphite, 4 parts of silicon dioxide, decahydrate sulfuric acid 40 parts of sodium, 20 parts of ammonium sulfate, 5 parts of sodium bisulfate, 1 part of silicon carbide, ...

Embodiment 3

[0043] Consumer battery separators, seefigure 1 ,include

[0044] A base layer 1, the base layer 1 is a composite layer of glass fiber and polyvinyl alcohol fiber;

[0045] The modified layer 2 arranged on the surface of the base layer 1; the modified layer 2 includes a polypropylene material matrix 3 and porous alumina ultrafine powder 4 dispersed in the polypropylene material matrix 3, ceramic particles 5 and phase change microspheres 5 ;

[0046] The phase change microsphere 5 is made of the following components by weight: 50 parts of chlorinated paraffin, 1.5 parts of glyceryl monostearate, 2 parts of sodium dodecylbenzenesulfonate, ethylene terephthalate 10 parts of ester, 5 parts of 2-acrylamido-2-methylpropanesulfonic acid, 5 parts of dimethylaminoethyl acrylate, 2 parts of terephthalic acid, 2 parts of graphite, 3 parts of silicon dioxide, sulfuric acid decahydrate 30 parts of sodium, 15 parts of ammonium sulfate, 8 parts of sodium bisulfate, 2 parts of silicon carbi...

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PUM

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Abstract

The invention provides a consumer battery diaphragm. The consumer battery diaphragm comprises a base layer (1) and a modification layer (2) arranged on the surface of the base layer (1), wherein the base layer (1) is a glass fiber and polyvinyl alcohol fiber composite layer; the modification layer (2) comprises a polypropylene material matrix (3) as well as porous alumina ultrafine powder (4), ceramic particles (5) and phase change microspheres (5) which are dispersed in the polypropylene material matrix (3). The battery diaphragm has the advantages of simple process, high liquid absorption amount, great surface area, high porosity, small aperture, high chemical purity, fewer harmful impurities and safety in use.

Description

technical field [0001] The invention particularly relates to a consumer battery separator and belongs to the technical field of battery materials. Background technique [0002] Battery separator paper is used as the diaphragm material to separate the positive and negative electrodes in the battery. Its main function is to prevent the positive and negative electrodes in the battery from being in direct contact with each other and short circuit, and to allow the ions in the electrolyte to pass freely between the positive and negative electrodes while electrons cannot pass through freely. , Among the various parts that make up the battery, the separator material plays a pivotal role, and its performance determines the interface structure, internal resistance, etc. of the battery, and directly affects the capacity, cycle performance and other characteristics of the battery. A separator with excellent performance plays an important role in improving the overall performance of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/16H01M2/14H01M50/403H01M50/443H01M50/446H01M50/454H01M50/489H01M50/491
CPCH01M50/446H01M50/403Y02E60/10
Inventor 周寿斌张校刚汪的华何建平彭创吴战宇毛旭晖钱帮芬
Owner 华富(江苏)锂电新技术有限公司
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