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Scratchable flexible capacitor electrode ink and preparation method thereof

A capacitor electrode and electrode ink technology, which is applied in capacitor manufacturing, capacitors, ink, etc., can solve the problems of complex process, low efficiency, low viscosity of electrode ink, etc., and achieve the effect of speeding up the preparation efficiency, simplifying the preparation process, and smoothing the surface

Inactive Publication Date: 2018-06-29
SHANGHAI MI FANG ELECTRONICS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] As can be seen from the above, the existing problems in the prior art of using electrode inks to prepare electrode materials are that the processes such as spray coating, spin coating or printing are complicated and inefficient; the viscosity of electrode inks is low, and the dispersion of carbon nanotubes in them is not good, so it is difficult to Combined with doctor blade coating process; the existing scheme of using tackifier to increase viscosity complicates the composition of electrode ink, and the presence of tackifier may affect the conductivity of electrode material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh 100mg of PEDOT:PSS powder and place it in a 20ml glass bottle, slowly add 9ml of deionized water, stir and dissolve to prepare a uniformly dispersed PEDOT:PSS aqueous dispersion.

[0032] Take 6ml of 10% commercial carbon nanotube aqueous dispersion by pipette gun, slowly add to the above PEDOT:PSS dispersion, place the resulting mixed solution in a magnetic stirrer, and fully stir at a stirring rate of 600rpm for 2 Hours, prepare the electrode ink.

[0033] Using PET as the substrate, scrape coating with a scraper equipped with a scraper. The specific scraper parameters are: the height of the scraper from the substrate is 300 μm, and the scraper speed is 1.5 mm / s. Put the PET film coated with electrode ink on a hot stage and heat it at 110°C for 2 hours to obtain a capacitor electrode material with a smooth surface and a square resistance of 33Ω / □.

Embodiment 2

[0035] Weigh and take 200mg of PEDOT:PSS powder and place it in a 50ml beaker, slowly add 18ml of deionized water, stir and dissolve to prepare a uniformly dispersed PEDOT:PSS aqueous dispersion.

[0036] Measure 12ml of 10% commercial graphene aqueous dispersion by measuring cylinder, and slowly add it into the above-mentioned PEDOT:PSS dispersion with a dropper, the resulting mixed solution is placed in a mechanical stirrer, and fully stirred at a stirring rate of 1000rpm for 2.5 Hours, prepare the electrode ink.

[0037] The PI film is used as the substrate, and the scraping equipment equipped with a scraper is used for scraping. The specific scraping parameters are: the height of the scraper from the substrate is 600 μm, the substrate temperature is 60°C, and the scraping speed is 2mm / s. After the solvent on the surface of the film is volatilized, the PI film coated with electrode ink is placed on a hot stage after repeated scraping for 3 times. After heating at 120°C for ...

Embodiment 3

[0039] Weigh 100mg of polyaniline and polystyrene sulfonate (PANI:PSS) powder into a 10ml glass bottle, slowly add 3ml of deionized water, stir and dissolve to prepare a uniformly dispersed PANI:PSS aqueous dispersion.

[0040] Measure 2ml of 10% carbon nanotube aqueous dispersion with a pipette gun, and slowly add it to the above PANI:PSS dispersion, place the resulting mixed solution in a magnetic stirrer, and fully stir for 2 hours at a stirring rate of 6000rpm , to prepare capacitor electrode ink.

[0041] The PI film was used as the substrate, and the scraping equipment equipped with a 150 μm line coating rod was used for scraping. The substrate temperature was 50 ° C, and the scraping speed was 2.5 mm / s. After the solvent on the surface of the film is volatilized, the PI film coated with electrode ink is placed on a hot stage after repeated scraping for 3 times. After heating at 120°C for 2 hours, a capacitor electrode material with a smooth surface and a square resistan...

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PUM

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Abstract

Scratchable flexible capacitor electrode ink comprises a conductive macromolecule dispersion and a high-viscosity additive, and is characterized in that the high-viscosity additive is a high-concentration nanocarbon material dispersion; the mass fraction of a carbon material in the high-concentration nanocarbon material dispersion is greater than 5%; the conductive macromolecule dispersion is selected from a dispersion of poly 3,4-ethylenedioxythiophene and polystyrene sulfonate (PEDOT:PSS), or a dispersion of polyaniline or a dispersion of polypyrrole. The flexible capacitor electrode ink cancoat a flexible substrate by a blade coating technology, so that rapid preparation of an electrode material is achieved.

Description

technical field [0001] The present invention relates to an electrode ink and a preparation method thereof, in particular to a preparation method of an electrode ink containing a conductive polymer and a high-viscosity additive, and the prepared electrode ink can be coated on a flexible substrate by a scraping process Preparation of flexible electrode materials. Background technique [0002] As a new form of energy storage, flexible capacitors have the advantages of high power density, high charge-discharge rate, long cycle life, and good temperature resistance, and can be widely used in flexible / wearable electronic devices. The key factor determining the performance of flexible capacitors is the electrode material. [0003] In recent years, it has become an industry trend to use composite materials made of conductive polymers doped with conductive particles as flexible conductive materials. efficiency; conductive polymer materials doped with conductive fillers have the pro...

Claims

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Application Information

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IPC IPC(8): C09D11/52C09D11/108C09D11/102C09D11/03H01G13/00
CPCC09D11/03C09D11/102C09D11/108C09D11/52H01G13/00
Inventor 任大勇
Owner SHANGHAI MI FANG ELECTRONICS LTD
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