Electroconductive polymer solution, electroconductive polymer composition, solid electrolytic capacitor therewith and method for producing same ?

A conductive polymer and solid electrolysis technology, which is applied in the direction of solid electrolytic capacitors, electrolytic capacitor manufacturing, hybrid capacitor electrodes, etc., can solve the problems that the properties and heat resistance of conductive polymer films are not always sufficient, and achieve excellent dispersibility performance, excellent heat resistance, and excellent reliability

Active Publication Date: 2013-09-18
TOKIN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] However, although the pH of the conductive polymer solution can be arbitrarily adjusted by these methods, on the other hand, in the conductive polymer composition obtained from the conductive polymer solution, the properties and heat resistance of the conductive polymer film are not sufficient. is always sufficient, so there is still a problem

Method used

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  • Electroconductive polymer solution, electroconductive polymer composition, solid electrolytic capacitor therewith and method for producing same ?
  • Electroconductive polymer solution, electroconductive polymer composition, solid electrolytic capacitor therewith and method for producing same ?
  • Electroconductive polymer solution, electroconductive polymer composition, solid electrolytic capacitor therewith and method for producing same ?

Examples

Experimental program
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Embodiment 1

[0098] refer to figure 1 , to illustrate Embodiment 1 of the present invention. A 3×4 mm porous aluminum foil subjected to a surface area increasing treatment by etching was used as the anode conductor 1 . The immersion of the anode conductor 1 into the tank containing the monomer solution, dopant and oxidant solution is repeated several times, and a poly-3,4-substance containing poly-3,4-substrate is formed inside the pores of the porous body of the anode conductor 1 by a chemical polymerization method. A conductive polymer composition of ethylenedioxythiophene to form the first solid electrolyte layer 3a.

[0099] Subsequently, 1.1 g of 3,4-ethylenedioxythiophene was supplied to a mixture solution of 100 g of pure water and 5.9 g of 20% by mass polystyrenesulfonic acid (weight average molecular weight: 50000), and stirring was performed at normal temperature for 5 minutes. Subsequently, 5.0 g of a 40% by mass ammonium persulfate aqueous solution was supplied at 1 ml / min, a...

Embodiment 2

[0104] Except for setting the amount of 2-amino-2-hydroxymethyl-1,3-propanediol as the first compound to 0.20 g, a conductive polymer solution was obtained in the same manner as in Example 1, and a capacitor element was prepared . The resulting conductive polymer solution was dark blue and had a pH of 4.68.

Embodiment 3

[0106] Except for setting the amount of 2-amino-2-hydroxymethyl-1,3-propanediol as the first compound to 0.30 g, a conductive polymer solution was obtained in the same manner as in Example 1, and a capacitor element was prepared . The resulting conductive polymer solution was dark blue and had a pH of 6.11.

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Abstract

The invention discloses an electroconductive polymer solution, an electroconductive polymer composition, a solid electrolytic capacitor therewith and a method for producing same. The present invention provides an electroconductive polymer solution in which the good dispersibility is maintained and the pH is arbitrarily adjusted, and an electroconductive polymer composition having an excellent heat resistance. Further, the present invention provides a solid electrolytic capacitor having an excellent reliability. The present invention is an electroconductive polymer solution, containing an electroconductive polymer in which a dopant is doped, a first compound having an amino group and a hydroxyl group, a second compound having a carboxylic acid group, and a dispersing medium.

Description

technical field [0001] The invention relates to a conductive polymer solution, a conductive polymer composition, a solid electrolytic capacitor containing them and a preparation method thereof. Background technique [0002] Solid electrolytic capacitors have been developed, which are obtained by forming a dielectric oxide film on a porous body of a valve metal such as tantalum or aluminum by anodization and then by forming a conductive polymer that becomes a solid electrolyte on this oxide film. [0003] These solid electrolytic capacitors have an equivalent series resistance (hereinafter, referred to as ESR) lower than generally used capacitors in which the solid electrolyte is manganese dioxide, and they are used for various purposes. Recently, with the trend of high frequency and high current of integrated circuits, solid electrolytic capacitors with low ESR, large capacity and small loss are demanded. [0004] Methods of forming a conductive polymer layer to be a solid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/04C08L65/00C08L79/02C08L33/02C08K5/20C08K5/10C08J3/09C08J3/02H01G9/028H01G9/15
CPCH01G9/0036H01G9/028H01G9/15H01G11/48H01G11/56H01B1/124H01G9/025Y02E60/13
Inventor 信田知希菅原康久铃木聪史富冈泰宏
Owner TOKIN CORP
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