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Consumer battery diaphragm high in safety

A battery separator and consumer technology, applied in the field of battery materials, can solve the problems of affecting the battery cycle life, poor air permeability of the polyolefin separator, unable to meet the fast charging and discharging of the battery, etc., and achieves low oxidation resistance and hydrophilicity. Good, small aperture effect

Active Publication Date: 2016-08-03
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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  • Consumer battery diaphragm high in safety
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] High-safety consumer battery separators, see figure 1 ,include

[0021] Base layer 1, said base layer 1 is a hydrophilic PET non-woven fabric filled with high molecular polymer;

[0022] The modified layer 2 provided on the surface of the base layer 1; the modified layer 2 includes a polypropylene material matrix 3 and porous alumina ultrafine powder 4, ceramic particles 5 and phase change microspheres 5 dispersed in the polypropylene material matrix 3 ;

[0023] The phase change microspheres 5 are made of the following components by weight: 40 parts of chlorinated paraffin, 2 parts of glyceryl monostearate, 1 part of sodium dodecylbenzene sulfonate, and 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, sulfuric acid decahydrate 20 parts of sodium, 10 parts of ammonium sulfate, 10 parts of sodium bisulfate, 3 par...

Embodiment 2

[0032] High-safety consumer battery separators, see figure 1 ,include

[0033] Base layer 1, said base layer 1 is a hydrophilic PET non-woven fabric filled with high molecular polymer;

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

[0035] The phase change microspheres 5 are made of the following components by weight: 60 parts of chlorinated paraffin, 1 part of glyceryl monostearate, 3 parts of sodium dodecylbenzene sulfonate, and 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, sulfuric acid decahydrate 40 parts of sodium, 20 parts of ammonium sulfate, 5 parts of sodium bisulfate, 1 part ...

Embodiment 3

[0044] Consumer battery separator with high safety, see figure 1 ,include

[0045] Base layer 1, said base layer 1 is a hydrophilic PET non-woven fabric filled with high molecular polymer;

[0046] The modified layer 2 provided on the surface of the base layer 1; the modified layer 2 includes a polypropylene material matrix 3 and porous alumina ultrafine powder 4, ceramic particles 5 and phase change microspheres 5 dispersed in the polypropylene material matrix 3 ;

[0047] The phase change microspheres 5 are made of the following components by weight: 50 parts of chlorinated paraffin, 1.5 parts of glyceryl monostearate, 2 parts of sodium dodecylbenzene sulfonate, and 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...

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Abstract

The invention provides a consumer battery diaphragm high in safety. The consumer battery diaphragm high in safety comprises a base layer (1) and modified layers (2) arranged on the surfaces of the base layer (1). The base layer (1) is made of hydrophilic PET non-woven fabric filled with a high-molecular polymer. Each modified layer (2) comprises a polypropylene material matrix (3), porous alumina superfine powder (4), ceramic particles (5) and phase-change microspheres (5), wherein the porous alumina superfine powder (4), the ceramic particles (5) and the phase-change microspheres (5) are dispersed in the polypropylene material matrix (3). The battery diaphragm is simple in process, high in liquid absorption amount, large in surface area, high in porosity, small in aperture, high in chemical purity and safe to use and has few harmful impurities.

Description

Technical field [0001] The invention particularly relates to a consumer battery separator with high safety, which belongs to the technical field of battery materials. Background technique [0002] Battery separator paper is used as a separator material to separate the positive and negative electrodes in the battery. The main function is to prevent the positive and negative electrodes in the battery from directly contacting and short-circuit, and to allow the ions in the electrolyte to pass freely between the positive and negative electrodes while the electrons cannot pass freely. Among the various parts of the battery, the diaphragm material plays a pivotal role. Its performance determines the interface structure and internal resistance of the battery, and directly affects the battery's capacity and cycle performance. A separator with excellent performance plays an important role in improving the overall performance of the battery. [0003] Currently, battery separators are mainly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/14H01M2/16C08L91/06C08L89/00C08K13/02C08K3/34C08K3/04C08K3/36C08K5/092H01M50/403H01M50/437H01M50/44H01M50/443H01M50/489H01M50/491
CPCC08L91/06C08K2201/014H01M50/403H01M50/446H01M50/411H01M50/449C08L89/00C08K13/02C08K3/34C08K3/04C08K3/36C08K5/092Y02E60/10
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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