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Anticorrosion lead-acid battery fiberglass diaphragm

A lead-acid battery and glass fiber technology, applied in the direction of lead-acid battery, lead-acid battery construction, battery pack components, etc., can solve the problem of affecting the cycle life of the battery, the poor gas permeability of the polyolefin diaphragm, and the inability to meet the rapid charging of the battery. Discharge and other problems, to achieve the effect of low oxidation resistance, good hydrophilicity, and excellent mechanical strength

Inactive Publication Date: 2016-06-08
JIANGSU HUAFU STORAGE NEW TECH DEV
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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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  • Anticorrosion lead-acid battery fiberglass diaphragm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Corrosion-resistant lead-acid battery fiberglass separator, see figure 1 , including glass fiber composite corrosion resistance, 1. Polymer and water-soluble resin composite layer on both surfaces of glass fiber and polyvinyl alcohol fiber composite layer 2. Nanoparticles on the outer surface of polymer and water-soluble resin composite layer Particle Coating3.

[0018] The corrosion-resistant layer includes the following components by weight: 80 parts of glass fiber, 3 parts of magnesium hydroxide, 15 parts of acetyl tributyl citrate, 6 parts of styrene, 10 parts of graphite fluoride, and 10 parts of tricresyl phosphate , 30 parts of fatty acid amide, 20 parts of nitrile rubber, 2 parts of potassium dichromate.

[0019] In the composite layer of polymer and water-soluble resin, the polymer is polypropylene and polyethylene terephthalate with a mass ratio of 1:1, and the water-soluble resin is polyethylene with a mass ratio of 1:2:1. Alcohol, polyvinylpyrrolidone, pol...

Embodiment 2

[0026] Corrosion-resistant lead-acid battery fiberglass separator, see figure 1 , including glass fiber composite corrosion resistance, 1. Polymer and water-soluble resin composite layer on both surfaces of glass fiber and polyvinyl alcohol fiber composite layer 2. Nanoparticles on the outer surface of polymer and water-soluble resin composite layer Particle Coating3.

[0027] The corrosion-resistant layer includes the following components by weight: 80 parts of glass fiber, 1 part of magnesium hydroxide, 20 parts of acetyl tributyl citrate, 5 parts of styrene, 15 parts of graphite fluoride, and 5 parts of tricresyl phosphate , 35 parts of fatty acid amide, 15 parts of nitrile rubber, 3 parts of potassium dichromate.

[0028] In the composite layer of polymer and water-soluble resin, the polymer is a mixture of one or several kinds of polyethylene, and the water-soluble resin is hydroxymethyl cellulose and cellulose acetate with a mass ratio of 1:1:2 , A mixture of cellulose...

Embodiment 3

[0032] Corrosion-resistant lead-acid battery fiberglass separator, see figure 1 , including glass fiber composite corrosion resistance, 1. Polymer and water-soluble resin composite layer on both surfaces of glass fiber and polyvinyl alcohol fiber composite layer 2. Nanoparticles on the outer surface of polymer and water-soluble resin composite layer Particle Coating3.

[0033] The corrosion-resistant layer includes the following components by weight: 80 parts of glass fiber, 5 parts of magnesium hydroxide, 10 parts of acetyl tributyl citrate, 7 parts of styrene, 5 parts of graphite fluoride, and 15 parts of tricresyl phosphate , 25 parts of fatty acid amide, 25 parts of nitrile rubber, 1 part of potassium dichromate.

[0034] In the composite layer of polymer and water-soluble resin, the polymer is polyimide, and the water-soluble resin is cellulose acetate butyrate, cellulose acetate propionate, and pullulan at a mass ratio of 1:1:1. mixture.

[0035] The nanoparticle coat...

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Abstract

The invention provides an anticorrosion lead-acid battery fiberglass diaphragm, comprising a fiberglass composite anticorrosion layer, a polymer and water-soluble resin composite layer arranged on two surfaces of a fiberglass and polyvinyl alcohol fiber composite layer, and a nanoparticle coating arranged on the outer surface of the polymer and water-soluble resin composite layer. Fiberglass is applied in the manufacture of battery diaphragms, a produced battery diaphragm will have better properties than those of a common battery diaphragm, such as higher liquid absorbing capacity, higher liquid absorbing speed and better hydrophilicity, and a high liquid absorbing rate of the diaphragm is maintained in a whole lifetime; meanwhile, the fiberglass diaphragm has large surface specific area, high porosity, small pore size, high chemical purity, few harmful impurities, excellent acid resistance, excellent antioxidant property, small resistance and the like.

Description

technical field [0001] The invention particularly relates to a corrosion-resistant lead-acid storage battery glass fiber diaphragm. 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 battery. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/14H01M10/12H01M50/40
CPCH01M10/12H01M50/446H01M50/403Y02E60/10Y02P70/50
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 JIANGSU HUAFU STORAGE NEW TECH DEV
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