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Method for making electrolyte super capacitor using gel polymer

A gel polymer and supercapacitor technology, which is applied in the field of preparation, can solve the problems of liquid leakage, liquid supercapacitors are not easy to package, etc., and achieve the effects of easy assembly, good environmental stability and service life, and high specific capacitance

Inactive Publication Date: 2004-11-17
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The document "Catia Arbizzani, et al Electrochemica Acta, 41 (1): 21-26, 1996" discloses a conductive polymer with two different p-type dopings of polythiophene (PMTh) and polypyrrole (PPy) as The supercapacitor of the electrode uses liquid electrolyte, and the liquid supercapacitor has the problems of difficult packaging and leakage

Method used

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  • Method for making electrolyte super capacitor using gel polymer
  • Method for making electrolyte super capacitor using gel polymer
  • Method for making electrolyte super capacitor using gel polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] ①.Synthesis of polymethylthiophene

[0036] Propylene glycol carbonate as solvent, supporting electrolyte (Bu) 4 NPF 6 The concentration of methyl thiophene is 0.02M / L, the concentration of methyl thiophene is 0.1M / L, and the system is kept within the range of 5±2°C. The three-electrode method is used for polymerization, and stainless steel is used as the working electrode and the counter electrode, and the silver / silver chloride electrode is Reference electrode, then filled with nitrogen gas for 10 minutes, constant current (j=2mA / cm 2 ) and cyclic voltammetry to synthesize polymethylthiophene. The polymerization time is 6000s.

[0037] ②. Polypyrrole

[0038] Propylene glycol carbonate as solvent, supporting electrolyte (Bu) 4 NPF 6The concentration of pyrrole is 0.02M / L, the concentration of pyrrole is 0.1M / L, the system is kept at 0°C, and the three-electrode method is used for polymerization. Stainless steel is used as the working electrode and the counter el...

Embodiment 2

[0046] ①.Synthesis of methylthiophene-methoxythiophene copolymer

[0047] With propylene carbonate as solvent, tetrabutylammonium hexafluorophosphate (Bu) with a concentration of 0.02M / L 4 NPF 6 In order to support the electrolyte, the total concentration of the mixture of methylthiophene and methoxythiophene (10:1) is 0.1M / L, the system is kept within the range of 5±2°C, and the three-electrode method is used for polymerization, with stainless steel sheet or carbon paper As the working electrode and the counter electrode, the silver / silver chloride electrode is used as the reference electrode, and then filled with nitrogen for 10 minutes, with a constant current (j = 0.1 ~ 10mA / cm 2 ) and cyclic voltammetry to synthesize methylthiophene-methoxythiophene copolymers, with a total polymerization time of 6000s.

[0048] ②. Polypyrrole

[0049] Propylene glycol carbonate as solvent, supporting electrolyte (Bu) 4 NPF 6 The concentration of pyrrole is 0.02M / L, the concentration...

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Abstract

This invention adopts Gel polymer electrolyte which is Li ion polymer electrolyte with the multipolymer of polyvinyliene fluoride (PVDF) or vinylidene fluoride-hexafluoropropane as the substrate. Thepreparation method is to add the polymer particles of vinylidene fluoride-hexafluoropropane into acetone to a solution to be added by the solution of ethyl carbonate-propylene carbonate of Li salt 0.5-2M / L to fully mixed with the Gel polymer electrolyte solution which is coated separately on the surface of electrode 1 of prepared polypropyrrole or the surface of electrode of the polymer blend of poly methylthiophene, thereafter to be assembled. The said super capacitor is with high specific capacitance as high as 25f / g, and fine atmosphere stability and durable life time without leakage.

Description

technical field [0001] The invention relates to a preparation method of a supercapacitor composed of conductive polymers as active materials, belonging to electronic devices [0002] technology field. Background technique [0003] Supercapacitors are capacitors composed of conductive polymer electrodes. Compared with traditional capacitors, supercapacitors have very high capacitance. In addition, they also have the advantages of high discharge power, fast charge and discharge capabilities, and long cycle life. If compared with electric The power battery in the car is used together to quickly provide high current and high power when starting and climbing; to charge the capacitor during normal driving. [0004] Supercapacitors with conductive polymers as active materials are less costly than noble metal oxide electrodes, and have greater development prospects and competitiveness. Its working principle is: through the rapid and reversible n-type or p-type element doping and d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/028
CPCY02E60/13H01G11/56C08G2261/1412C08G2261/3221C08G2261/3223
Inventor 周啸肖强凤姜翠玲冯天富
Owner TSINGHUA UNIV