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Electrode for flexible solid super capacitor and preparation method thereof

A supercapacitor, solid-state technology, applied in the direction of capacitor electrodes, hybrid capacitor electrodes, solid electrolytic capacitors, etc., to achieve the effects of long cycle life, large charge and discharge rate, and high power density

Active Publication Date: 2012-01-18
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since most of the currently used supercapacitors are liquid electrolyte systems, it brings many problems to the maintenance, assembly and safety of energy storage devices. Therefore, flexible solid supercapacitors using polymer electrolytes have become one of the ideal energy storage devices for vehicles.

Method used

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  • Electrode for flexible solid super capacitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 85 parts of polyethylene oxide and 15 parts of polypyrrole were mechanically stirred in acetonitrile solution for 2 hours to obtain a polymer solution; 300 parts of lithium titanium oxide were mechanically stirred in acetonitrile solution for 4 hours and then mixed with the polymer solution, mechanically stirred 4 hours, remove solvent, dry to constant weight at 50 ℃ in vacuum oven, obtain the active material that polymer film wraps; Get 75 parts of active material that polymer film wraps, the carbon nanotube of 15 parts, the polytetrafluoroethylene of 5 parts Vinyl fluoride was uniformly mixed in deionized water to make a slurry, coated on one side of the diaphragm, and dried in a vacuum oven at 50°C to constant weight; the other side was coated with 85 parts of activated carbon, 10 parts of carbon nanotubes, and 5 parts of polytetrafluoroethylene The slurry composed of vinyl fluoride was vacuum-dried at 50°C to constant weight to obtain a flexible solid supercapacitor ...

Embodiment 2

[0018] 18 parts of polyvinyl alcohol were mechanically stirred in deionized water for 3 hours, 160 parts of lithium manganese oxide were added, mechanically stirred for 2 hours, water was removed, and vacuum-dried at 50°C to constant weight; Take it out immediately after soaking in hydrochloric acid solution for 2 hours, and react with 1M ammonium persulfate hydrochloric acid solution at 0°C for 3.5 hours. After washing, dry naturally to constant weight to obtain a polymer-coated active substance; The active material covered by the film, 15 parts of carbon nanotubes, and 5 parts of polytetrafluoroethylene were mixed evenly to make a slurry, coated on one side of the diaphragm, and dried in a vacuum oven at 50 ° C for 24 hours to constant weight; One side is coated with a slurry consisting of 85 parts of activated carbon, 10 parts of carbon nanotubes, and 5 parts of polytetrafluoroethylene, and dried in a vacuum oven at 50°C to constant weight to obtain a flexible solid supercap...

Embodiment 3

[0020] Weigh 120 parts of intermediate carbon phase microspheres and mechanically stir in deionized water for 4 hours. Under an argon atmosphere, add 12 parts of ferric chloride and 7 parts of p-toluenesulfonic acid, mechanically stir for 2 hours, add 2 parts of pyrrole Monomer, mechanically stirred for 24 hours, washed repeatedly in deionized water until neutral, vacuum dried at 50°C to constant weight to obtain a powder sample; the powder sample was added to 1g / 200ml of polyvinylidene fluoride-hexafluoropropylene in acetone, Mechanically stirred for 4 hours, vacuum-dried at 50°C to constant weight to obtain an active material coated with a polymer film; 70 parts of the active material coated with a polymer film, 20 parts of carbon nanotubes, and 10 parts of polytetrafluoroethylene were taken. Mix it evenly in deionized water to make a slurry, coat it on one side of the diaphragm, and dry it in a vacuum oven at 50°C to constant weight; the other side is coated with 110 grams o...

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Abstract

The invention relates to an electrode for a flexible solid super capacitor. The electrode comprises an active substance, a conductive agent and an adhesive. The electrode is characterized in that the ratio of the active substance to the conductive agent to the adhesive is (70-80):(10-20):(8-18), and an ion-electron conduction polymer film of which the mass is 3-26% of the mass of the active substance is coated on the outer layer of the active substance. According to the invention, the electrode for the flexible solid super capacitor is prepared by coating the active substance with the ion-electron conduction polymer film, and the flexible solid super capacitor with the electrode is an ideal energy storage device for a new energy vehicle; the electrode is flexible, light and thin, is favorable to the assembly design of an energy storage unit and a vehicle and the reduction of the weight of the energy storage unit, and is safe and environmentally-friendly. The electrode for the flexible solid super capacitor has the characteristics that the polymer film which has the conduction properties of both ions and electrons is coated on the active substance, therefore, the property of an interface between the electrode and polymer electrolyte can be improved, contact resistance can be reduced, ion conductance can be improved, and the energy storage capacity of the super capacitor can be further enhanced.

Description

technical field [0001] The invention relates to an electrode for a flexible solid supercapacitor and a preparation method thereof, belonging to the technical field of supercapacitors. Background technique [0002] Supercapacitor is a new type of energy storage element between traditional electrostatic capacitors and batteries. It has the advantages of high power density, large charge and discharge rate, long cycle life, good temperature resistance, and environmental friendliness. It can be applied to the power supply of small electrical appliances and pulse power supply. In recent years, it has been combined with fuel cells, lithium-ion batteries, and nickel-metal hydride batteries to form a composite power supply, which meets the requirements of starting acceleration, climbing, and energy recovery of automobiles, and at the same time extends the battery life. service life has received widespread attention. [0003] As the core part of supercapacitors, electrode materials d...

Claims

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Application Information

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IPC IPC(8): H01G9/04H01G9/042H01G9/15
CPCY02E60/13H01G9/042H01G11/48
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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