CN111863457A - Porous self-supporting PEDOT (PEDOT-PSS) conductive film and preparation method thereof - Google Patents
Porous self-supporting PEDOT (PEDOT-PSS) conductive film and preparation method thereof Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 title claims abstract 22
- 239000002105 nanoparticle Substances 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 10
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 75
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 75
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 30
- 239000000243 solution Substances 0.000 claims description 26
- 239000008367 deionised water Substances 0.000 claims description 25
- 229910021641 deionized water Inorganic materials 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000001035 drying Methods 0.000 claims description 22
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 21
- 239000000377 silicon dioxide Substances 0.000 claims description 21
- 238000003756 stirring Methods 0.000 claims description 19
- 239000007864 aqueous solution Substances 0.000 claims description 18
- 239000012528 membrane Substances 0.000 claims description 18
- 239000006185 dispersion Substances 0.000 claims description 16
- 238000002791 soaking Methods 0.000 claims description 15
- 239000002131 composite material Substances 0.000 claims description 13
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- 239000000084 colloidal system Substances 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- 239000004793 Polystyrene Substances 0.000 claims description 11
- 229920002223 polystyrene Polymers 0.000 claims description 11
- 239000002073 nanorod Substances 0.000 claims description 8
- 229920002678 cellulose Polymers 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 7
- 239000002244 precipitate Substances 0.000 claims description 7
- -1 Poly ethylene terephthalate Polymers 0.000 claims description 4
- 239000002077 nanosphere Substances 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 239000004005 microsphere Substances 0.000 claims description 2
- 238000000967 suction filtration Methods 0.000 claims description 2
- 239000007772 electrode material Substances 0.000 abstract description 9
- 239000011148 porous material Substances 0.000 abstract description 5
- 238000009826 distribution Methods 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 57
- 229910052681 coesite Inorganic materials 0.000 description 16
- 229910052906 cristobalite Inorganic materials 0.000 description 16
- 229910052682 stishovite Inorganic materials 0.000 description 16
- 229910052905 tridymite Inorganic materials 0.000 description 16
- 229920000144 PEDOT:PSS Polymers 0.000 description 14
- 239000003990 capacitor Substances 0.000 description 8
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- 239000004744 fabric Substances 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 239000002202 Polyethylene glycol Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- 238000001878 scanning electron micrograph Methods 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- GKWLILHTTGWKLQ-UHFFFAOYSA-N 2,3-dihydrothieno[3,4-b][1,4]dioxine Chemical compound O1CCOC2=CSC=C21 GKWLILHTTGWKLQ-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 239000000758 substrate Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/26—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/48—Conductive polymers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
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Abstract
The invention discloses a porous self-supporting PEDOT and PSS conductive film and a preparation method thereof. The preparation method comprises the steps of mixing nano particles with PEDOT and PSS to prepare a self-supporting PEDOT and PSS/nano particle film, and finally removing the nano particles to obtain the porous self-supporting PEDOT and PSS conductive film. The conductive film is prepared by the method. The method is simple and feasible, and the prepared porous PEDOT and PSS film has high conductivity and good self-supporting property, can control the size and distribution of the pore diameter of the film through the particle size, shape and addition of nanoparticles, and has wide application prospect in the field of flexible supercapacitor electrode materials.
Description
Technical Field
The invention relates to the technical field of flexible electrode materials, in particular to a porous self-supporting PEDOT/PSS conductive film and a preparation method thereof.
Background
With the rapid development of global technology, people have higher and higher requirements for the durability, flexibility and other properties of electronic devices, and the demand for flexible electronic devices is more urgent. Meanwhile, with the successive appearance of wearable equipment, flexible display screens and the like, the hot tide of people for the research of flexible devices is greatly triggered, and the flexible super capacitor is one of the devices.
A supercapacitor is a new type of energy storage device that is interposed between a rechargeable battery and a conventional capacitor. Compared with a rechargeable battery, the super capacitor has higher energy storage density, shorter charging and discharging time and longer service life. According to the energy density formula of the super capacitor: e =1/2CV2, it is known that the energy density of a supercapacitor can be increased by increasing the specific capacitance of an electrode material. The porous material is used as the electrode material of the super capacitor, so that the contact area between the electrolyte and the electrode is increased, the surface utilization rate is higher, and the specific surface area capacitance is improved. Therefore, the flexible electrode is an essential material for realizing the successful preparation of the flexible super capacitor.
Poly 3, 4-ethylenedioxythiophene (PEDOT) is a conductive polymer and has the advantages of high conductivity, good chemical property, high temperature resistance, good light transmittance and the like, but the characteristic of insolubility of PEDOT greatly restricts the application of PEDOT. The PEDOT and PSS are mixed together according to a certain proportion, so that the solubility of the PEDOT is greatly improved, and the PEDOT-PSS has the advantages of good conductivity, light weight, good flexibility, good air stability and the like. But the characteristics of flat and compact surface of the PEDOT and PSS film restrict the application of the PEDOT and PSS film in the aspect of electrode materials of super capacitors.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a porous self-supporting PEDOT/PSS conductive film and a preparation method thereof, which can increase the specific surface area of an electrode while realizing the flexibility of an electrode material.
In order to achieve the purpose, the preparation method of the porous self-supporting PEDOT: PSS conductive film comprises the following steps:
(1) doping nano particles into a PEDOT (Poly ethylene terephthalate) PSS (Poly styrene) aqueous solution, and stirring and dispersing to obtain a dispersion liquid;
(2) dripping the dispersed liquid obtained in the step (1) into dilute sulfuric acid to separate out PEDOT (PSS)/nanoparticles to obtain sheet-shaped precipitates of the PEDOT (PSS)/nanoparticles;
(3) adding deionized water into the flaky precipitate obtained in the step (2), and uniformly stirring to obtain uniform colloid of PEDT (Poly ethylene terephthalate) PSS/nanoparticles;
(4) filtering the colloid obtained in the step (3) by using a filter membrane, and drying the colloid in an oven to prepare a micron-grade PEDOT (PEDOT-PSS)/nano-particle composite film;
(5) soaking the composite film obtained in the step (4) in acetone, and dissolving the filter membrane to obtain a self-supporting PEDOT (PSS)/nanoparticle composite film;
(6) and (5) cleaning the self-supporting PEDOT/PSS/nano particle composite film obtained in the step (5) by using deionized water, and putting the self-supporting PEDOT/PSS/nano particle composite film into an oven to be dried to obtain the final conductive film.
Preferably, the nanoparticles in the step (1) are silica nanospheres, silica nanorods and polystyrene microspheres; the diameter of the nanosphere is 30-300nm, the diameter of the nanorod is 30-300nm, the length-diameter ratio of the nanorod is 10-30, and the addition amount of nanoparticles is equal to that of PEDOT: the volume ratio of the PSS aqueous solution is 10-30%; and (3) when the nano particles are silicon dioxide nanospheres or silicon dioxide nano rods, soaking the self-supporting PEDOT/PSS/nano particle composite film obtained in the step (5) in an HF aqueous solution to remove the nano particles, and then entering the step (6).
Preferably, the dispersion is obtained after stirring for 24 to 48 hours in step (1).
Preferably, the concentration of the dilute sulfuric acid used in step (2) is 0.2 to 18 mol/L.
Preferably, the cellulose ester microporous filter membrane with the pore diameter of 0.3-0.5 μm is adopted as the filter membrane in the step (4), and the vacuum degree of suction filtration is less than 0.1 MPa.
Preferably, the mass fraction of the HF aqueous solution is 20-55wt%, and the soaking time is 10-24 h.
Preferably, the self-supporting PEDOT/PSS/nano particle composite film obtained in the step (5) is put into deionized water and washed for 3-5 times.
The invention also claims the technical scheme as follows: and (3) preparing the porous self-supporting PEDOT (PSS) conductive film through the steps.
The porous self-supporting PEDOT and PSS conductive film and the preparation method thereof have the advantages that the scheme is simple and feasible, and the pore diameter and pore distribution of the porous self-supporting PEDOT and PSS conductive film can be adjusted by doping nanoparticles with different shapes, particle sizes and concentrations; meanwhile, the film has higher conductivity (about 430S/cm) and specific capacitance, and has wide application prospect in the field of flexible supercapacitor electrode materials.
The preparation method takes the nano particles as an additive substance to be mixed with PEDOT (Poly ethylene glycol ether ketone) PSS (Poly ethylene glycol ether ketone) to form a PEDOT PSS/nano particle mixed solution, and the self-supporting PEDOT PSS/nano particle film is prepared. And then removing the nano particles by using a specific solution to obtain the porous self-supporting PEDOT/PSS conductive film. The preparation method aims to prepare the porous PEDOT/PSS film, so that when the porous PEDOT/PSS film is used as an electrode material of a flexible super capacitor, the contact area between an electrolyte and the electrode material can be increased to a great extent, the surface utilization rate is increased, and the specific surface area capacitance is increased.
Drawings
FIG. 1 is a scanning electron micrograph of a cross-section of a free standing PEDOT: PSS film;
FIG. 2 is a scanning electron micrograph of a cross-section of a free standing PEDOT: PSS/nanoparticle film;
FIG. 3 is a scanning electron micrograph of a cross-section of a porous free-standing PEDOT-PSS conductive film;
FIG. 4 is a graph of the conductivity of free standing PEDOT: PSS film, free standing PEDOT: PSS/nanoparticle film, and porous free standing PEDOT: PSS conductive film.
Detailed Description
The invention is further described by way of example with reference to the accompanying drawings.
Comparative example:
this example describes a method for preparing a free standing PEDOT: PSS film, comprising the steps of:
(1) selecting PH1000 as PEDOT: PSS aqueous solution, dripping 1mL of PEDOT: PSS aqueous solution into 20mL of dilute sulfuric acid with the concentration of 1mol/L, observing that a sheet-shaped object is separated out, and filtering through dust-free cloth to obtain the sheet-shaped object PEDOT: PSS;
(2) adding the sheet into 20mL of deionized water, and uniformly stirring to obtain PEDOT (PSS) colloid;
(3) vacuum filtering the colloidal solution with a cellulose ester microporous filter membrane with the aperture of 0.45 mu m, putting the solution into a drying oven, drying the solution at 70 ℃ for 30min, then soaking the solution in 95% concentrated sulfuric acid for 30min, removing the filter membrane, washing the solution with deionized water, putting the solution into the drying oven again, and drying the solution at 70 ℃ for 30min to prepare a micron-grade PEDOT (Poly ethylene glycol ether styrene) PSS (Poly ethylene styrene) film;
(4) and soaking the PEDOT PSS film in a 10mol/L sulfuric acid solution for 24h, cleaning with deionized water, and drying in a drying oven at 70 ℃ for 30min to obtain the self-supporting PEDOT PSS film.
Example 1
A preparation method of a porous self-supporting PEDOT/PSS conductive film comprises the following steps:
(1) taking 1mg of SiO with the diameter of 100-300nm2Dispersing the nano particles in 2mL of deionized water, and uniformly stirring and dispersing to obtain SiO2A dispersion liquid;
(2) selecting PH1000 as PEDOT PSS aqueous solution, and collecting 20 μ L of SiO2Adding the dispersion into 1mL of PEDOT/PSS aqueous solution, and stirring for 24h to obtain PEDOT/PSS/SiO2A dispersion liquid;
(3) dropping the solution into 20mL of 1mol/L dilute sulfuric acid to observe flaky precipitate, and filtering with dust-free cloth to obtain PEDOT, PSS/SiO2A flaky precipitate of (4);
(4) the PEDOT PSS/SiO2Adding the flaky precipitate into 20mL deionized water, and uniformly stirring to obtain PEDOT (PSS/SiO)2A colloid;
(5) vacuum filtering the colloid with 0.45 μm cellulose ester microporous filter membrane, drying at 70 deg.C for 30min in oven, soaking in acetone for 30min, removing the filter membrane, washing with deionized water, drying at 70 deg.C for 30min in oven, and making into micrometer-grade self-supporting PEDOT (PSS/SiO)2A film;
(6) the PEDOT PSS/S is mixed withiO2Soaking the film in 40wt% hydrofluoric acid solution for 12 hr to remove SiO2Obtaining a porous self-supporting PEDOT PSS film;
(7) washing the porous self-supporting PEDOT/PSS film with 20mL deionized water, and drying to obtain the high-conductivity self-supporting film
Example 2
A preparation method of a porous self-supporting PEDOT/PSS conductive film comprises the following steps:
(1) taking 1.5mg SiO with the diameter of 100-300nm2Dispersing the nano particles in 2mL of deionized water, and uniformly stirring and dispersing to obtain SiO2A dispersion liquid;
(2) selecting PH1000 as PEDOT PSS aqueous solution, and taking 100 μ L of SiO2Adding the dispersion into 1m of LPEDOT/PSS aqueous solution, and stirring for 24h to obtain PEDOT/PSS/SiO2A dispersion liquid;
(3) dropping the solution into 20mL of 1mol/L dilute sulfuric acid, observing flaky precipitation, and filtering with dust-free cloth to obtain flaky PEDOT, PSS/SiO2；
(4) Adding the flaky substance into 20mL of deionized water, and uniformly stirring to obtain PEDOT (PSS/SiO)2A colloid;
(5) vacuum filtering the colloidal solution with 0.45 μm cellulose ester microporous filter membrane, drying at 70 deg.C for 30min in oven, soaking in acetone for 30min, removing the filter membrane, washing with deionized water, drying at 70 deg.C for 30min in oven, and making into micrometer-grade self-supporting PEDOT (PSS/SiO)2A film;
(6) soaking the PEDOT/PSS/SiO 2 film in 40wt% hydrofluoric acid solution for 12h to remove SiO2Obtaining a porous self-supporting PEDOT PSS film;
(7) and (3) cleaning the porous self-supporting PEDOT and PSS film by using 20mL of deionized water, and drying to obtain the high-conductivity self-supporting film.
Example 3
A preparation method of a porous self-supporting PEDOT/PSS conductive film comprises the following steps:
（1）taking 0.1mg SiO with the diameter of 100-300nm2Dispersing the nano particles in 2mL of deionized water, and uniformly stirring and dispersing to obtain SiO2A dispersion liquid;
(2) selecting PH1000 as PEDOT PSS aqueous solution, and taking 50 μ L of SiO2Adding the dispersion into 1ml PEDOT PSS aqueous solution, stirring for 24h to obtain PEDOT PSS/SiO2A dispersion liquid;
(3) dropwise adding the solution into 20mL of 1mol/L dilute sulfuric acid, observing sheet-shaped precipitation, and filtering with dust-free cloth to obtain sheet-shaped PEDOT (PSS/SiO)2；
(4) Adding the flaky substance into 20mL of deionized water, and uniformly stirring to obtain PEDOT (PSS/SiO)2A colloid;
(5) vacuum filtering the colloidal solution with 0.45 μm cellulose ester microporous filter membrane, drying at 70 deg.C for 30min in oven, soaking in acetone for 30min, removing the filter membrane, washing with deionized water, drying at 70 deg.C for 30min in oven, and making into micrometer-grade self-supporting PEDOT (PSS/SiO)2A film;
(6) the PEDOT PSS/SiO2Soaking the film in 40wt% hydrofluoric acid solution for 12 hr to remove SiO2Obtaining a porous self-supporting PEDOT PSS film;
(7) and (3) cleaning the porous self-supporting PEDOT and PSS film by using 20mL of deionized water, and drying to obtain the high-conductivity self-supporting film.
Example 4:
a preparation method of a porous self-supporting PEDOT/PSS conductive film comprises the following steps:
(1) dispersing 0.1mg of polystyrene nano particles with the diameter of 100-300nm in 2mL of deionized water, and uniformly stirring and dispersing to obtain a polystyrene dispersion liquid;
(2) selecting PH1000 as a PEDOT (polystyrene substrate) PSS aqueous solution, adding 50 mu L of polystyrene dispersion into a 1mLPEDOT PSS aqueous solution, and stirring for 24h to obtain a PEDOT PSS/polystyrene dispersion;
(3) dropwise adding the solution into 20mL of 1mol/L dilute sulfuric acid, observing that a sheet is separated out, and filtering by using a dust-free cloth to obtain a sheet PEDOT (PEDOT: PSS/polystyrene);
(4) adding the sheet-containing matter into 20mL deionized water, and stirring uniformly to obtain PEDOT (PSS/polystyrene) colloid;
(5) vacuum filtering the colloidal solution with a cellulose ester microporous filter membrane with the aperture of 0.45 mu m, putting the solution into a drying oven, drying the solution for 30min at 70 ℃, then putting the solution into acetone for soaking for 30min, cleaning the solution with deionized water after the filter membrane is melted off, putting the solution into the drying oven again, and drying the solution for 30min at 70 ℃ to prepare a micron-grade self-supporting PEDOT (PSS)/polystyrene film;
(6) and (3) cleaning the porous self-supporting PEDOT and PSS film by using 20mL of deionized water, and drying to obtain the high-conductivity self-supporting film.
The SEM cross-section of the free-standing PEDOT: PSS thin film obtained in the comparative example is shown in FIG. 1, and the free-standing PEDOT: PSS/SiO thin film obtained in the step (5) of example 2 is shown in FIG. 12SEM cross-sectional morphology of the films is shown in FIG. 2, and SEM cross-sectional morphology of the porous free-standing PEDOT: PSS conductive film of example 3 is shown in FIG. 3, and the conductivity of the film was measured and shown in FIG. 4.
Claims (7)
1. A preparation method of a porous self-supporting PEDOT/PSS conductive film is characterized by comprising the following steps: the method specifically comprises the following steps:
(1) doping nano particles or a deionized water solution of the nano particles into a PEDOT (PSS) aqueous solution, and stirring and dispersing to obtain a dispersion liquid;
(2) dripping the dispersed liquid obtained in the step (1) into dilute sulfuric acid to separate out PEDOT (PSS)/nanoparticles to obtain sheet-shaped precipitates of the PEDOT (PSS)/nanoparticles;
(3) adding deionized water into the flaky precipitate obtained in the step (2), and uniformly stirring to obtain uniform colloid of PEDT (Poly ethylene terephthalate) PSS/nanoparticles;
(4) filtering the colloid obtained in the step (3) by using a filter membrane, and drying the colloid in an oven to prepare a micron-grade PEDOT (PEDOT-PSS)/nano-particle composite film;
(5) soaking the composite film obtained in the step (4) in acetone, and dissolving the filter membrane to obtain a self-supporting PEDOT (PSS)/nanoparticle composite film;
(6) and (5) cleaning the self-supporting PEDOT/PSS/nano particle composite film obtained in the step (5) by using deionized water, and putting the self-supporting PEDOT/PSS/nano particle composite film into an oven to be dried to obtain the final conductive film.
2. The method for preparing a porous self-supporting PEDOT PSS conductive film as claimed in claim 1, wherein: the nano particles in the step (1) are silicon dioxide nanospheres, silicon dioxide nanorods and polystyrene microspheres; the diameter of the nanosphere is 30-300nm, the diameter of the nanorod is 30-300nm, the length-diameter ratio of the nanorod is 10-30, and the addition amount of nanoparticles is equal to that of PEDOT: the volume ratio of the PSS aqueous solution is 10-30%; and (3) when the nano particles are silicon dioxide nanospheres or silicon dioxide nano rods, soaking the self-supporting PEDOT/PSS/nano particle composite film obtained in the step (5) in an HF aqueous solution to remove the nano particles, and then entering the step (6).
3. The method for preparing a porous self-supporting PEDOT PSS conductive film as claimed in claim 1, wherein: stirring for 24-48h in the step (1) to obtain a dispersion liquid.
4. The method for preparing a porous self-supporting PEDOT PSS conductive film as claimed in claim 1, wherein: the concentration of the dilute sulfuric acid used in the step (2) is 0.2-18 mol/L.
5. The method for preparing a porous self-supporting PEDOT PSS conductive film as claimed in claim 1, wherein: in the step (4), the cellulose ester microporous filter membrane with the aperture of 0.3-0.5 μm is adopted as the filter membrane, and the vacuum degree of suction filtration is less than 0.1 MPa.
6. The method for preparing a porous self-supporting PEDOT PSS conductive film as claimed in claim 2, wherein: the HF aqueous solution has a mass fraction of 20-55wt% and a soaking time of 10-24 h.
7. A porous self-supporting PEDOT PSS conductive film is characterized in that: prepared by the process of claim 1.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113707799A (en) * | 2021-08-17 | 2021-11-26 | 上海应用技术大学 | Preparation method of flexible self-supporting PEDOT nanowire thermoelectric material |
| CN114724774A (en) * | 2022-05-06 | 2022-07-08 | 嘉兴学院 | Self-supporting conductive film and preparation method thereof |
| CN114927359A (en) * | 2022-03-17 | 2022-08-19 | 嘉兴学院 | PEDOT PSS film and capacitor |
| WO2023104049A1 (en) * | 2021-12-07 | 2023-06-15 | 深圳先进技术研究院 | Elastic dry electrode, and preparation method therefor and use thereof |
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| CN105405977A (en) * | 2015-10-29 | 2016-03-16 | 华中科技大学 | Self-supporting PEDOT-PSS film, manufacturing method thereof and applications |
| CN110233061A (en) * | 2019-06-19 | 2019-09-13 | 江西科技师范大学 | A kind of preparation method of the highly conductive porous flexible film of PEDOT:PSS |
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| CN113707799A (en) * | 2021-08-17 | 2021-11-26 | 上海应用技术大学 | Preparation method of flexible self-supporting PEDOT nanowire thermoelectric material |
| WO2023104049A1 (en) * | 2021-12-07 | 2023-06-15 | 深圳先进技术研究院 | Elastic dry electrode, and preparation method therefor and use thereof |
| CN114927359A (en) * | 2022-03-17 | 2022-08-19 | 嘉兴学院 | PEDOT PSS film and capacitor |
| CN114724774A (en) * | 2022-05-06 | 2022-07-08 | 嘉兴学院 | Self-supporting conductive film and preparation method thereof |
| CN114724774B (en) * | 2022-05-06 | 2023-11-28 | 嘉兴学院 | Self-supporting conductive film and preparation method thereof |
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