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Supercapacitor separator material of high breaking strength and low shrinkage

A supercapacitor, breaking strength technology, applied in the manufacture of hybrid capacitor separators and hybrid/electric double layer capacitors, etc., can solve the problems of technical difficulties in the manufacture of high-performance separator paper, poor electrolyte affinity, high price, etc. The effect of distribution, uniform discharge current and convenient process

Inactive Publication Date: 2016-10-05
ANHUI SUREPHON CAPACITOR CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the materials used for supercapacitor separators mainly include cellulose separator paper and traditional battery separators. High-performance separator paper is difficult to manufacture and expensive; The manufacturing technology of spun nanofiber membrane is simple, low cost, the porosity of the diaphragm is as high as 90%, and the affinity to the electrolyte is good, but the disadvantage is that the strength is not high

Method used

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Embodiment Construction

[0016] A supercapacitor diaphragm material with high breaking strength and low shrinkage rate, made of the following raw materials in parts by weight (kg): polyvinyl alcohol fiber 35, polypropylene fiber 33, polyacrylonitrile powder 10, acetone 30, N, N2 Methylformamide 72, 70°C water-soluble PVA fiber 8, sodium polyacrylate 2, carbon fiber 7, titanium diboride 4, fatty alcohol polyoxyethylene ether sodium sulfate 0.6, silicone rubber 3, oleic acid 1, sodium alginate 2 .

[0017] According to claim 1, a supercapacitor diaphragm material with high breaking strength and small shrinkage rate is prepared by the following specific methods:

[0018] (1) Mix acetone and N, N dimethylformamide evenly at room temperature, add polyacrylonitrile powder, and stir at room temperature for 3 hours at a speed of 100 rpm to form a polyacrylonitrile spinning solution. Electrospinning was carried out for 2 hours under the conditions of a distance of 20 cm, a voltage of 25 kV, and a liquid suppl...

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Abstract

The invention discloses supercapacitor separator material of high breaking strength and low shrinkage. The supercapacitor separator material is prepared by the raw material of the following parts by weight: 35-40 parts of polyvinyl alcohol fiber, 33-35 parts of mekralon, 10-13 parts of polyacrylonitrile powder, 30-32 parts of acetone, 72-75 parts of N,N-dimethyl formamide, 8-10 parts of water soluble PVA fiber of 70 DEG C, 2-3 parts of sodium polyacrylate, 7-9 parts of carbon fiber, 4-5 parts of titanium diboride, 0.6-0.8 part of polyoxyethylene fatty alcohol sodium sulfate, 3-4 parts of organic silicone rubber , 1-1.3 parts of oleic acid and 2-3 parts of sodium alginate. The carbon fiber and the organic silicone rubber are added in preparation of the product through a series of processing technology so that toughness and tensile strength of the product can be can be enhanced. The titanium diboride is added so that heat resistance of the product can be enhanced, and heat shrinkage of the product can be reduced. The prepared composite separator material has great breaking strength and bending strength and low heat shrinkage.

Description

technical field [0001] The invention relates to the technical field of capacitor diaphragms, in particular to a supercapacitor diaphragm material with high breaking strength and small shrinkage rate. Background technique [0002] Supercapacitor is a highly competitive energy storage device. Because it can realize fast charging, high current discharge, and has a charging life of more than 100,000 times, it plays an important role in some applications that require short-term high-rate discharge. . The power supply requirements of hybrid electric vehicles and electric vehicles have also aroused worldwide attention to supercapacitors, a new type of energy storage device. In the composition of supercapacitors, electrodes, electrolyte and separator paper play a decisive role in the performance of supercapacitors. At present, the electrodes and electrolytes of supercapacitors are research hotspots, but the research and attention on separators is not high. [0003] The separator ...

Claims

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Application Information

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IPC IPC(8): H01G11/52H01G11/84
CPCH01G11/52H01G11/84Y02E60/13
Inventor 杜其信
Owner ANHUI SUREPHON CAPACITOR CO LTD