Flexible solid-state supercapacitor and preparation method thereof

A supercapacitor and solid-state technology, which is applied in the direction of solid electrolytic capacitors, capacitors, electrolytic capacitors, etc., can solve the problems that limit the rapid development of new energy vehicles, low power density, and heavy battery weight, so as to facilitate integrated design and improve safety , the effect of reducing weight

Inactive Publication Date: 2012-02-15
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The currently used batteries have problems such as heavy weight, short life, and low power density, which limit the rapid development of new energy vehicles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Stir 0.8 parts of nano-alumina, 9 parts of polyoxyethylene, and 8 parts of lithium hexafluorophosphorus in acetonitrile to make a polymer electrolyte slurry; use the scrape coating method to coat the polymer electrolyte Put it on the cut polyester fiber cloth, and vacuum-dry it at 50° C. to constant weight to obtain a separator with a thickness of 45 μm.

[0024] (2) Mechanically stir 0.1 part of polypyrrole and 1 part of polyoxyethylene in acetonitrile for 6 hours to obtain a polymer solution; mechanically stir 21 parts of lithium titanium oxide in acetonitrile solution for 4 hours, then mix with the polymer solution , mechanically stirred for 2 hours, and vacuum-dried at 50°C to constant weight to obtain an active material coated with a polymer film; 7 parts of the active material coated with a polymer film were mixed with 2 parts of carbon nanotubes and 1 part of polytetrafluoroethylene Ethylene was mixed evenly in deionized water to make a slurry, coated on one ...

Embodiment 2

[0028] (1) Stir 0.8 parts of barium titanate, 10 parts of polyoxyethylene, and 8 parts of lithium trifluoromethanesulfonate in acetonitrile to make a polymer electrolyte slurry; use the scraping method to coat the polymer electrolyte Put it on the cut glass fiber cloth, and vacuum-dry it at 50° C. to constant weight to obtain a separator with a thickness of 50 μm.

[0029](2) Mechanically stir 0.2 parts of polyaniline and 2 parts of polyoxyethylene in N-methylpyrrolidone for 6 hours to obtain a polymer solution; mechanically stir 18 parts of lithium titanium oxide in N-methylpyrrolidone for 4 hours After mixing with the polymer solution, mechanically stirring for 2 hours, vacuum-drying at 80° C. to constant weight, the active material coated by the polymer film was obtained; 7 parts of the active material coated by the polymer film were mixed with 6 parts of carbon nanofibers, 4 parts of polytetrafluoroethylene were mixed evenly in deionized water to make a slurry, coated on o...

Embodiment 3

[0033] (1) Stir 0.9 parts of nano-silica, 10 parts of polyvinylidene fluoride, and 8 parts of lithium trifluoromethanesulfonate in N-methylpyrrolidone to make a polymer electrolyte slurry; The polymer electrolyte was coated on the cut glass fiber cloth, and vacuum-dried at 80°C to constant weight to obtain a separator with a thickness of 50um.

[0034] (2) Weigh 0.1 part of polypyrrole and 1 part of polyoxyethylene in acetonitrile and mechanically stir for 4 hours to obtain a polymer solution; mechanically stir 21 parts of lithium iron oxide in acetonitrile solution for 4 hours and mix with the polymer solution , mechanically stirred for 2 hours, vacuum-dried to constant weight at 50° C. to obtain an active material coated with a polymer film; get 8 parts of active material coated with a polymer film, mix with 1.5 grams of carbon nanotubes, 0.5 grams of polytetrafluoroethylene Ethylene deionized water was mixed evenly to make a slurry, coated on one side of the diaphragm, and ...

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Abstract

The invention relates to a flexible solid-state supercapacitor and a preparation method thereof. The flexible solid-state supercapacitor is characterized in that: an electrode comprises an active material, a conductive agent and a bonding agent, wherein the outer layer of the active material is wrapped with an ion-electron conduction polymer film; a membrane comprises a polymer electrolyte and fiber cloth supporting body; a current collector comprises a piece of carbon fiber cloth coated with a metal layer, and a conductive bonding agent; an encapsulation outer layer comprises a mixture consisting of 85 to 95 parts of polymer and 3 to 12 parts of nano clay and glass fiber; the composition ratio of the polymer to the nano clay and glass fiber is 2 to 1; and the polymer has the same or similar molecular structures as or with the polymer for an ornament in an automobile and can be integrated with the ornament / an energy storage unit in the automobile. The intensity of the flexible solid-state supercapacitor is improved, the contact resistance is reduced, and the ionic conductance rate is increased; furthermore, the chain flexibility of a polymer electrolyte base body is improved and diffuse transmission of ions is facilitated; moreover, the installation space for new energy and energy-saving automobiles is saved, the weight of the energy storage unit is reduced, and the flexible solid-state supercapacitor is safe and environment-friendly and is an ideal energy storage device for the new energy automobiles.

Description

technical field [0001] The invention relates to a flexible solid supercapacitor and a preparation method thereof, belonging to the technical field of supercapacitors. Background technique [0002] The currently used batteries have problems such as heavy weight, short life, and low power density, which limit the rapid development of new energy vehicles. Supercapacitor is a new type of energy storage element between traditional electrostatic capacitors and batteries. It has the advantages of high power density, high charge and discharge rate, long cycle life, and good temperature resistance. As an auxiliary power supply, it is combined with fuel cells, lithium-ion batteries, and nickel-metal hydride batteries to form a composite power supply, which meets the requirements of starting, accelerating, climbing, and energy recovery of the car, and at the same time prolongs the service life of the battery; as the main power supply, use For urban electric buses, it can realize fast ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/15H01G9/004H01G9/02H01G9/028H01G9/042H01G9/08
CPCH01G9/042H01G11/48Y02E60/13
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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