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Endurance capacitor diaphragm material and preparation technology thereof

A diaphragm material and preparation technology, applied in hybrid capacitor separators, hybrid/electric double-layer capacitor manufacturing, chemical instruments and methods, etc., can solve problems such as poor low-temperature impact resistance, easy aging, and reduced service life of capacitors. Excellent aging resistance, high mechanical strength, and large specific surface area

Inactive Publication Date: 2018-01-09
SUZHOU HAILINGDA EIECTRONIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the materials used for capacitor separators mainly include cellulose separator paper and traditional battery separators. Although traditional battery separators have the characteristics of heat resistance, corrosion resistance, low density and can be sterilized by steam, they have the disadvantages of poor low temperature impact resistance and easy aging. ; while the strength of cellulose separator paper is not high, and its durability needs to be strengthened
At present, the power of capacitors is constantly increasing, and the aging diaphragm is easy to cause breakdown, which seriously reduces the service life of capacitors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: A kind of durable capacitor diaphragm material is composed of the following raw materials in parts by weight: 100 parts of matrix fiber, 18 parts of polyvinylidene fluoride fiber, 28 parts of acetone, 105 parts of dimethylacetamide, and 6 parts of ceramic fiber 5 parts, 5 parts of hydroxyapatite powder, 10 parts of modified additives, 1 part of active calcium carbonate, 6 parts of vinyl acetate emulsion; the matrix fiber is a mixture of polypropylene fiber and polyvinyl alcohol fiber, and the The modification additive is composed of the following raw materials in parts by weight: 1 part of sulfur, 0.6 part of sulfamic acid, 0.4 part of dibutyltin dilaurate, 2 parts of hydroxypropyl methylcellulose, 3 parts of glass microspheres, dimethyl Acetamide 3 parts.

[0024] The preparation technology of described a kind of durable capacitor separator material, comprises the following steps:

[0025] (1) Preparation of spinning film: Mix acetone and dimethylacetami...

Embodiment 2

[0033] Embodiment 2: A kind of durable capacitor separator material is made up of the following raw materials in parts by weight: 100 parts of matrix fiber, 15 parts of polyvinylidene fluoride fiber, 25 parts of acetone, 100 parts of dimethylacetamide, 4 parts of ceramic fiber part, 3 parts of hydroxyapatite powder, 6 parts of modifying auxiliary agent, 0.5 part of active calcium carbonate, 4 parts of vinyl acetate emulsion; described matrix fiber is polyethylene fiber, and described modifying auxiliary agent consists of the following weight The raw material composition of the number of parts: 0.5 parts of sulfur, 0.3 parts of sulfamic acid, 0.2 parts of dibutyltin dilaurate, 1 part of hydroxypropyl methylcellulose, 2 parts of glass microspheres, and 2 parts of dimethylacetamide.

[0034] The preparation technology of described a kind of durable capacitor separator material, comprises the following steps:

[0035] (1) Preparation of spinning film: Mix acetone and dimethylaceta...

Embodiment 3

[0043] Embodiment 3: A kind of durable capacitor diaphragm material is made up of the following raw materials in parts by weight: 100 parts of matrix fibers, 20 parts of polyvinylidene fluoride fibers, 30 parts of acetone, 110 parts of dimethylacetamide, and 8 parts of ceramic fibers 6 parts, 6 parts of hydroxyapatite powder, 14 parts of modified additives, 1.5 parts of active calcium carbonate, 8 parts of vinyl acetate emulsion; the matrix fiber is a mixture of polypropylene fiber, polyethylene fiber and polyvinyl alcohol fiber , the modified auxiliary agent is composed of the following raw materials in parts by weight: 1.5 parts of sulfur, 0.9 part of sulfamic acid, 0.6 part of dibutyltin dilaurate, 3 parts of hydroxypropyl methylcellulose, 4 parts of glass microspheres , 4 parts of dimethylacetamide.

[0044] The preparation technology of described a kind of durable capacitor separator material, comprises the following steps:

[0045] (1) Preparation of spun film: Mix acet...

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Abstract

The invention discloses an endurance capacitor diaphragm material comprising the following raw materials by weight parts: matrix fiber 100 parts, polyvinylidene fluoride fiber 15-20 parts, acetone 25-30 parts, dimethyl acetamide 100-110 parts, ceramic fibre 4-8 parts, hydroxy apatite powder 3-6 parts, modification auxiliary agent 6-14 parts, active calcium carbonate 0.5-1.5 parts, and vinyl acetate emulsion 4-8 parts; the invention also discloses an endurance capacitor diaphragm material preparation technology comprising the following steps: firstly spinning the polyvinylidene fluoride fibersso as to obtain a spinning film of 6-8 micro in thickness; using a wet method non-woven fabrics technology to fabricate the matrix fibers into a non-woven cloth; using a hot pressing mode to combine two said materials so as to form the super capacitor diaphragm material with high isolation property and high intensity.

Description

technical field [0001] The invention relates to the field of electrochemical materials and its preparation, in particular to a durable capacitor diaphragm material and its preparation process. Background technique [0002] Capacitors, especially supercapacitors, are very competitive energy storage products in the market, which can realize fast charging and high current discharge, and have a charging life of more than 100,000 times. extremely important position. [0003] The capacitor diaphragm material is located between two porous carbon electrodes, and is completely soaked in the electrolyte together with the electrodes. It plays an isolation role in the repeated charge and discharge process, prevents electron conduction, and prevents internal short circuit caused by contact between the two electrodes. This requires that the separator material is an electronic insulator with good isolation performance, and its pores should be as small as possible smaller than the minimum ...

Claims

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Application Information

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IPC IPC(8): H01G11/52H01G11/84D01F6/48B32B27/30B32B27/02B32B27/18B32B27/08B32B27/12B32B27/32B32B27/36B32B7/08B32B33/00B32B37/10B32B37/06
Inventor 黄啸谷张其土
Owner SUZHOU HAILINGDA EIECTRONIC TECH CO LTD