Conductive macromolecular solution, preparation thereof, conductive polymer coated film and solid electrolyte capacitor

Abstract

An electroconductive polymer solution contains electroconductive high molecules and polyanion. Under 25 DEG C, the oxygen content in the electroconductive polymer solution is below 8 weight ppm. An electroconductive coating film using the solution has high transmittance and low resistance. Applied to a solid electrolytic capacitor, the electroconductive polymer solution can improve the conductivity of solid electrolysis and filling behavior, therefore, a solid electrolytic capacitor with low ESR and other excellent properties is obtained.

Description

technical field

[0001] The present invention relates to a conductive polymer solution and a preparation method thereof, a conductive polymer coating film and a solid electrolytic capacitor using the conductive polymer coating film. Background technique

[0002] The conductive polymer solution and its coating film of the present invention are expected to be applied to: conductive applications, conductive coatings, antistatic agents, electromagnetic wave shielding materials, transparent conductive materials, battery materials, capacitor materials, electronic equipment materials, semiconductive materials, static electricity Type copy parts, transfer parts, solar cells, organic light-emitting diodes, field emission displays (FED), touch screens, electroluminance sheets (Electroluminance), organic thin-film transistors (Organic thin-film transistors), electronic paper (epaper), Electrophotographic materials, etc.

[0003] In recent years, with the digitalization of electronic eq...

Examples

Embodiment 1

[0087] With 5g of 3,4-ethylenedioxythiophene, 50g of 30wt% polystyrene sulfonic acid aqueous solution (average molecular weight 120,000) and 10g of ammonium persulfate, 1g of iron sulfate (III) dissolved in 1000ml of water, stirred 18 hours.

[0088] Ion exchange resin was used to remove residual ions in the solution to obtain dark blue 1.5 wt% polystyrenesulfonic acid-poly(3,4-ethylenedioxy)thiophene aqueous solution.

[0089] The obtained 5g of 1.5wt% polystyrenesulfonic acid-poly(3,4-ethylenedioxy)thiophene aqueous solution, 0.25g of dimethyl sulfoxide (DMSO), and 5g of ethanol were mixed and stirred, and then mixed The solution was decompressed to 0.09 MPa, and 28 kHz ultrasonic waves were irradiated for 5 minutes to obtain a conductive polymer solution.

[0090] After the conductive polymer solution is coated on the glass, it is dried in an oven at 120° C. to obtain a conductive polymer coating film. The electrical conductivity and light transmittance of the conductive ...

Embodiment 2

[0092] 5g of 1.5wt% polystyrenesulfonic acid-poly(3,4-ethylenedioxy)thiophene aqueous solution prepared in Example 1, 0.1g of dihydroxybenzene, 3g of ethanol, 0.25g of dihydrocarbyl ether ether After the glycol esters were mixed and stirred, the mixed solution was decompressed to 1 kPa and irradiated with 40 kHz ultrasonic waves for 1 minute to obtain a conductive polymer solution.

[0093] After the conductive polymer solution is coated on the glass, it is dried in an oven at 120° C. to obtain a conductive polymer coating film. The electrical conductivity and light transmittance of the conductive polymer coating film were evaluated, and the results are shown in Table 1.

Embodiment 3

[0095] Except not irradiating ultrasonic waves, the conductive polymer coating film was prepared by the same method as in Example 2 and evaluated by the same method as in Example 2. The results are shown in Table 1.

technical field

[0001] The present invention relates to a conductive polymer solution and a preparation method thereof, a conductive polymer coating film and a solid electrolytic capacitor using the conductive polymer coating film. Background technique

[0002] The conductive polymer solution and its coating film of the present invention are expected to be applied to: conductive applications, conductive coatings, antistatic agents, electromagnetic wave shielding materials, transparent conductive materials, battery materials, capacitor materials, electronic equipment materials, semiconductive materials, static electricity Type copy parts, transfer parts, solar cells, organic light-emitting diodes, field emission displays (FED), touch screens, electroluminance sheets (Electroluminance), organic thin-film transistors (Organic thin-film transistors), electronic paper (epaper), Electrophotographic materials, etc.

[0003] In recent years, with the digitalization of electronic eq...

Examples

Embodiment 1

[0087] With 5g of 3,4-ethylenedioxythiophene, 50g of 30wt% polystyrene sulfonic acid aqueous solution (average molecular weight 120,000) and 10g of ammonium persulfate, 1g of iron sulfate (III) dissolved in 1000ml of water, stirred 18 hours.

[0088] Ion exchange resin was used to remove residual ions in the solution to obtain dark blue 1.5 wt% polystyrenesulfonic acid-poly(3,4-ethylenedioxy)thiophene aqueous solution.

[0089] The obtained 5g of 1.5wt% polystyrenesulfonic acid-poly(3,4-ethylenedioxy)thiophene aqueous solution, 0.25g of dimethyl sulfoxide (DMSO), and 5g of ethanol were mixed and stirred, and then mixed The solution was decompressed to 0.09 MPa, and 28 kHz ultrasonic waves were irradiated for 5 minutes to obtain a conductive polymer solution.

[0090] After the conductive polymer solution is coated on the glass, it is dried in an oven at 120° C. to obtain a conductive polymer coating film. The electrical conductivity and light transmittance of the conductive ...

Embodiment 2

[0092] 5g of 1.5wt% polystyrenesulfonic acid-poly(3,4-ethylenedioxy)thiophene aqueous solution prepared in Example 1, 0.1g of dihydroxybenzene, 3g of ethanol, 0.25g of dihydrocarbyl ether ether After the glycol esters were mixed and stirred, the mixed solution was decompressed to 1 kPa and irradiated with 40 kHz ultrasonic waves for 1 minute to obtain a conductive polymer solution.

[0093] After the conductive polymer solution is coated on the glass, it is dried in an oven at 120° C. to obtain a conductive polymer coating film. The electrical conductivity and light transmittance of the conductive polymer coating film were evaluated, and the results are shown in Table 1.

Embodiment 3

[0095] Except not irradiating ultrasonic waves, the conductive polymer coating film was prepared by the same method as in Example 2 and evaluated by the same method as in Example 2. The results are shown in Table 1.