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Conductive polymer, capacitor and preparation method thereof

A conductive polymer and capacitor technology, applied in the field of capacitors, can solve the problems of dedoping, poor conductivity, etc., and achieve the effects of improving conductivity, strong doping stability, and improving migration efficiency

Inactive Publication Date: 2020-11-10
SHENZHEN CAPCHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the poor conductivity of the conductive polymer dispersion in the existing solid capacitor and the dedoping problem in the way of adding dopants to the existing electrolyte, the invention provides a conductive polymer, a capacitor and a preparation method thereof

Method used

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  • Conductive polymer, capacitor and preparation method thereof
  • Conductive polymer, capacitor and preparation method thereof
  • Conductive polymer, capacitor and preparation method thereof

Examples

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preparation example Construction

[0036] Another embodiment of the present invention provides a method for preparing a capacitor, comprising the following steps:

[0037] Obtain a monomer solution, which includes a compound shown in general formula 1:

[0038]

[0039] Formula 1

[0040] Wherein, Y is selected from one of NH and S; R 1 , R 2 each independently selected from H or optionally substituted linear or branched alkyl, optionally substituted cycloalkyl, optionally substituted aryl, optionally substituted aralkyl, optionally substituted alkoxy, or hydroxyl and an organic group containing at least one of carboxyl, sulfonic acid and phosphoric acid, and R 1 and R 2 At least one is an organic group containing at least one of carboxyl, sulfonic acid and phosphoric acid;

[0041] The capacitor element is impregnated in the monomer solution, the impregnated capacitor element is taken out, dried, impregnated with an oxidant solution, polymerized, sealed and assembled to obtain a capacitor.

[0042] The ...

Embodiment 1

[0059] This embodiment is used to illustrate the conductive polymer disclosed in the present invention, the capacitor and the preparation method thereof, including the following steps:

[0060] S1. Use 3,4-ethylenedioxythiophene-2'-methanesulfonic acid as the polymer monomer, use ethanol as the solvent to prepare the polymer monomer into a 25% monomer solution, and use capacitor elements to impregnate the monomer solution 2min, take out the capacitor element and dry it in an oven at 80°C for 30min, then cool to room temperature;

[0061] S2. After the above steps, the element is vacuum impregnated with 55% ferric p-toluenesulfonate ethanol oxidant solution, the vacuum degree is -0.085MPa, slowly put the capacitor element into the oxidant solution, and keep the temperature between 20-25°C time, the time is maintained for 5 minutes;

[0062] S3. After the impregnation is completed, remove the capacitor element and put it in a constant temperature and humidity box for polymeriza...

Embodiment 2

[0065] This embodiment is used to illustrate the conductive polymer disclosed in the present invention, the capacitor and the preparation method thereof, including the following steps:

[0066] S1. Use 3,4-ethylenedioxythiophene-2',3'-dimethylsulfonic acid as the polymer monomer, use ethanol as the solvent to prepare the polymer monomer into a 27% monomer solution, and use capacitor elements Immerse in the monomer solution for 2 minutes, take out the capacitor element and dry it in an oven at 90°C for 30 minutes, then cool to room temperature;

[0067] S2. After the above steps, the element is vacuum impregnated with 60% ferric p-toluenesulfonate ethanol oxidant solution, the vacuum degree is -0.09MPa, slowly put the capacitor element into the oxidant solution, and keep the temperature between 20-25°C time, the time is maintained for 5 minutes;

[0068] S3. After the impregnation is completed, remove the capacitor element and put it into a constant temperature and humidity bo...

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Abstract

In order to overcome the problems of poor conductivity of a conductive polymer in an existing solid-state capacitor and dedoping in an existing mode of adding a doping agent to an electrolyte, the invention provides a conductive polymer. The polymer comprises a chain segment obtained by polymerization of a polymer monomer, and the polymer monomer comprises a compound represented by a general formula I: wherein Y is selected from one of NH and S; wherein R1 and R2 are independently selected from H or optionally substituted straight-chain or branched-chain alkyl, optionally substituted naphthenic base, optionally substituted aryl, optionally substituted aralkyl, optionally substituted alkoxy or hydroxyl and an organic group containing at least one of carboxyl, sulfonic acid group and phosphate group; at least one of R1 and R2 is an organic group containing at least one of a carboxyl group, a sulfonic acid group, and a phosphate group. Meanwhile, the invention also discloses a capacitor comprising the conductive polymer and a preparation method of the capacitor. The conductive polymer provided by the invention has a lower ESR value and stable electrical properties.

Description

technical field [0001] The invention belongs to the technical field of capacitors, and in particular relates to a conductive polymer, a capacitor and a preparation method thereof. Background technique [0002] Compared with ordinary electrolytic capacitors, solid electrolytic capacitors use solid conductive materials with high conductivity and good thermal stability as electrolytes. They not only have all the characteristics of ordinary electrolytic capacitors, but also have good reliability, long service life, high frequency and low impedance, and Large ripple current and other characteristics, and can overcome the disadvantages of liquid electrolytic capacitors that are easy to leak and have short life. With the rapid development of the domestic electronic information industry, from the development trend of recent years, solid electrolytic capacitors will gradually replace ordinary low-voltage electrolytic capacitors, and will become one of the pillar products of the elect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12H01G9/00H01G9/028H01G9/15
CPCC08G61/126H01G9/15H01G9/028H01G9/0036C08G2261/11C08G2261/145C08G2261/1426C08G2261/147C08G2261/3223C08G2261/514H10K85/1135C08G61/12C09D181/00C08L65/00C09D165/00C08G2261/1424C08G2261/794H01B1/127H10K10/20H01G9/00H01G9/025
Inventor 赵大成燕民翔
Owner SHENZHEN CAPCHEM TECH CO LTD