Membrane for flexible solid super capacitor and preparation method thereof

A supercapacitor and diaphragm technology, which is applied in the direction of solid electrolytic capacitors, capacitors, electrolytic capacitors, etc., can solve the problems of large volume and heavy battery weight, and achieve the effects of reducing weight, improving the ability to withstand external forces, and saving assembly space

Inactive Publication Date: 2012-02-22
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese patent with the publication number CN 101354964 A reports a polymer composite film for capacitors. The rare earth catalytic material in the film has a catalytic effect on hydrogen and oxygen, which reduces the problems caused by the gas; the publication number is CN 1553462A The Chinese patent reported a diaphragm prepared by a wet papermaking method, and the addition of reinforcing fibers improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0010] Example 1:

[0011] Mechanically stir 8 parts of polyoxyethylene in acetonitrile for 1 hour, add 1.5 parts of hexafluorophospholithium and 0.5 parts of nano aluminum oxide, and stir for 4 hours to prepare a polymer electrolyte slurry; The electrolyte is coated on the cut glass fiber cloth and dried to obtain a flexible solid supercapacitor diaphragm with a thickness of 45um.

Example Embodiment

[0012] Example 2:

[0013] Heat 7 parts of polyvinyl alcohol and 1.3 parts of polyacrylic acid in deionized water at 95°C, mechanically stir for 2 hours, add 1.5 parts of ammonium sulfate and 0.2 parts of graphene oxide, and stir for 4 hours to prepare polymer electrolyte slurry; The polymer electrolyte is coated on the cut polyester fiber cloth and dried to obtain a flexible solid supercapacitor diaphragm with a thickness of 80um.

Example Embodiment

[0014] Example 3:

[0015] 7.5 parts of polyoxyethylene were mechanically stirred in acetonitrile for 1 hour to obtain a polymer solution; 2 parts of lithium hexafluorophosphorus and 0.5 part of barium titanate were stirred in acetonitrile for 2 hours to prepare a polymer electrolyte slurry; The polymer electrolyte is coated on the cut basalt fiber cloth by the coating method and dried to obtain a flexible solid supercapacitor diaphragm with a thickness of 40um.

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Abstract

The invention relates to a membrane for a flexible solid super capacitor and a preparation method thereof. The membrane comprises a fiber support body and a polymer electrolyte, wherein the polymer electrolyte comprises a polymer matrix, an electrolyte and an additive. The preparation method is characterized by comprising the following steps: evenly mixing the polymer matrix, the electrolyte with the additive according to mass ratio to prepare polymer electrolyte slurry; coating the polymer electrolyte slurry onto a fiber sheet by utilizing a blade coating method, and drying to obtain the membrane for the flexible solid super capacitor, wherein the thickness of the membrane is 30-120mum. As the support body, the fiber sheet forms a structure and function integrated membrane with the attached polymer electrolyte, thus, the weight of an energy storage unit is reduced; the strength of the flexible solid super capacitor can be improved; the membrane for the flexible solid super capacitor is beneficial to the integrated design of automobile interior trim parts; current-carrying ions are provided by the polymer electrolyte; the energy storage function of the device is met; new energy automobile assembly space are saved; and the membrane for the flexible solid super capacitor is safe and environmentally friendly.

Description

technical field [0001] The invention relates to a diaphragm for a flexible solid supercapacitor and a preparation method thereof, belonging to the technical field of supercapacitors. Background technique [0002] Supercapacitors have the advantages of high power density, large charge-discharge rate, long cycle life, good temperature resistance, and environmental friendliness. They are combined with fuel cells, lithium-ion batteries, and nickel-metal hydride batteries to form a composite power supply to meet the needs of automobiles for starting, accelerating, and climbing. While meeting the requirements of slope and energy recovery, the service life of the battery is extended. At present, most supercapacitors used in industrial applications use liquid electrolyte, which has safety problems caused by leakage of electrolyte, while solid supercapacitors using solid electrolyte diaphragms have higher safety. Polymers have become the first choice for solid-state electrolyte sepa...

Claims

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Application Information

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IPC IPC(8): H01G9/02H01G9/028H01G9/15
CPCY02E60/13
Inventor 荣常如王金兴姜涛安宇鹏王丹张克金魏晓川米新艳许德超
Owner CHINA FIRST AUTOMOBILE
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