CN111276335A - Aramid nanofiber/graphene/conductive polymer flexible composite electrode and preparation method thereof - Google Patents
Aramid nanofiber/graphene/conductive polymer flexible composite electrode and preparation method thereof Download PDFInfo
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- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
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- H—ELECTRICITY
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- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
- H01G11/24—Electrodes characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity; characterised by the structural features of powders or particles used therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
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- H01G11/30—Electrodes characterised by their material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
Abstract
The invention discloses an aramid nanofiber/graphene/conductive polymer flexible composite electrode and a preparation method thereof. The method comprises the steps of preparing an aramid nano-fiber/graphene oxide composite film by adopting a blending and vacuum induction suction filtration method, reducing graphene oxide into graphene by reducing hydroiodic acid, preparing the aramid nano-fiber/graphene composite film, and depositing a conductive polymer on the surface of the graphene by electrodeposition to obtain the aramid nano-fiber/graphene/conductive polymer flexible composite electrode. The tensile strength of the flexible composite electrode of the present invention was 83.29 MPa; the toughness is 1.38MJ/m3(ii) a At a current density of 1mA/cm2The specific area volume is 487.67mF/cm2(ii) a At a current density of 5mA/cm2The specific area volume is 390.05mF/cm2(ii) a At 2mA/cm2The capacitor has the capacity retention rate of 86 percent after being charged and discharged for 3000 times under the current density, and has higher mechanical strength, high electrochemical performance and high cycle stability.
Description
Technical Field
The invention belongs to the technical field of preparation of flexible supercapacitor electrode materials, and relates to an aramid nanofiber/graphene/conductive polymer flexible composite electrode and a preparation method thereof.
Background
With the commercial development of portable electronic devices and hybrid electric vehicles, higher requirements are put on electrode materials of supercapacitors, and the materials need to have not only excellent electrochemical properties, but also relatively high mechanical strength. At present, most of electrode materials adopt a traditional coating process, namely, electrochemical active components, a polymer binder, a conductive agent and a dispersing solvent are uniformly mixed in proportion and coated on a metal current collector. However, the inherent high density and rigidity of the metal current collector cannot meet the requirements of the novel electronic device on flexibility, convenience and wearability of the energy storage device. Moreover, the adhesion between the electrode material and the metal current collector is poor, and the electrode material is cracked after being bent for several times, so that the electrode material falls off from the current collector, and the electrochemical performance of the supercapacitor is reduced. More importantly, this class of electrode materials is difficult to use in practical operating environments such as bending, folding, stretching, etc. Therefore, the self-supporting flexible electrode material with high mechanical strength, high electrochemical performance and high cycling stability becomes a research hotspot in the field of new energy at present.
Graphene (RGO), as a unique carbon nanomaterial, has the advantages of high specific surface area, good conductivity, and the like, and has been widely used in flexible electrode materials. The document Nano lett,2008,8(10): 3498-. However, the inherent brittleness of graphene cannot adapt to the deformation states of bending, folding, twisting and the like which may occur in practical application, and meanwhile, the compatibility of high mechanical property and high electrochemical property of the electrode cannot be realized.
The conductive polymer, such as Polyaniline (PANI), polypyrrole and the like, has unique electrical properties and extremely high specific capacitance, and meanwhile, the conductive polymer is easy to obtain raw materials, low in price and simple in synthesis conditions, and becomes a hot material for preparing the flexible supercapacitor. The document 'Energy & Environmental science,2012,5(9): 4983-4988' deposits polyaniline on a self-supporting carbon nanotube film, and finds that the specific capacitance of the carbon nanotube film electrode after loading the polyaniline is improved from 23.5F/g to 236F/g. But it is still brittle and cannot adapt to the deformation states of bending, folding, twisting and the like which may occur in practical application.
Poly-p-phenylene terephthamide (PPTA) is a high-performance para-aramid fiber with a basic repeating unit of- [ -CO-C6H4-CONH-C6H4NH-]-. The macroscopic aramid fiber yarn has the advantages of high strength, high modulus, high temperature resistance, chemical corrosion resistance, strong flame retardance, fatigue resistance, strong stability and the like. The para-aramid fiber is dissolved in dimethyl sulfoxide to obtain aramid nanofiber ACS nano,2011,5(9): 6945-.
Disclosure of Invention
The invention aims to provide an aramid nanofiber/graphene/conductive polymer flexible composite electrode and a preparation method thereof. According to the invention, on the basis of high conductivity of graphene, aramid nano-fiber with high mechanical strength and high flexibility is used as a reinforcing material, the mechanical property and flexibility of graphene are improved, and then a conductive polymer is deposited on the surface of the graphene through electrodeposition, so that the flexible self-supporting electrode material with high mechanical strength, high electrochemical performance and high cycling stability is prepared.
The technical solution for realizing the purpose of the invention is as follows:
the preparation method of the aramid nanofiber/graphene/conductive polymer flexible composite electrode comprises the following steps:
step 1, dissolving aramid fibers by adopting a dimethyl sulfoxide (DMSO)/KOH system to prepare an aramid nanofiber solution;
step 3, placing the aramid fiber nanofiber/graphene oxide composite film in hydroiodic acid, carrying out reduction reaction, soaking and cleaning with ethanol to remove hydroiodic acid after the reaction is finished, and drying to obtain the aramid fiber nanofiber/graphene oxide composite film;
step 4, soaking the aramid fiber nanofiber/graphene composite film serving as a working electrode in a sulfuric acid solution of a conductive polymer monomer by adopting a three-electrode system, electrochemically depositing the conductive polymer on the surface of the aramid fiber nanofiber/graphene film, maintaining the constant potential at 0.8V for 0.5-1 min to perform a nucleation reaction of the conductive polymer, and then maintaining the constant current density at 0.25-1.98 mA/cm2Maintaining for 10-20 min for polymerization reaction, and washing and drying to obtain an aramid nanofiber/graphene/conductive polymer flexible composite electrode; the flexible composite electrode comprises 11-25 parts by weight of aramid nano-fiber, 100 parts by weight of graphene and 0.8-1.8 parts by weight of conductive polymer.
Further, in the step 1, the concentration of the aramid nano-fiber solution is 2-10 mg/mL.
Further, in the step 2, the concentration of the graphene oxide in the dimethyl sulfoxide dispersion liquid of the graphene oxide is 2 mg/mL.
Further, in step 3, the soaking time of the hydroiodic acid is more than 10 hours, and the soaking time of the ethanol is 72 hours.
Further, in step 4, the conductive polymer monomer is a monomer conventionally used in the art, and may be aniline, pyrrole, thiophene, acetylene, and the like; the conductive polymer is a conductive polymer conventionally used in the art, and may be polyaniline, polypyrrole, polythiophene, polyacetylene, and the like.
Preferably, in the step 4, the flexible composite electrode comprises 11-18 parts by weight of aramid nanofiber, 100 parts by weight of graphene and 1.4-1.8 parts by weight of conductive polymer.
Compared with the prior art, the invention has the following advantages:
according to the invention, the graphene oxide is enhanced and modified by para-aramid fibers, the mechanical property and toughness of the graphene oxide film are improved, the graphene oxide is reduced by hydroiodic acid, the aramid nano fiber/graphene film with mechanical strength and electrical conductivity is prepared, and finally, a conductive polymer is deposited on the surface of the film through electrodeposition, so that the electrochemical performance of the composite electrode is improved. Meanwhile, the content of each component in the aramid nano-fiber/graphene/conductive polymer flexible composite electrode is controlled, so that the flexible composite electrode with high mechanical strength, high electrochemical performance and high cycling stability is prepared. The tensile strength of the composite electrode material prepared by the invention is 83.29 MPa; the toughness is 1.38MJ/m3(ii) a At a current density of 1mA/cm2The specific area volume is 487.67mF/cm2(ii) a At a current density of 5mA/cm2The specific area volume is 390.05mF/cm2(ii) a At 2mA/cm2The capacity retention rate is 86 percent when the charge and the discharge are cycled for 3000 times under the current density of (1).
Drawings
Fig. 1 is a schematic flow chart of a preparation method of an aramid nanofiber/graphene/conductive polymer flexible composite electrode.
FIG. 2 is a schematic representation of the electrochemical deposition of a conductive polymer according to the invention.
Fig. 3 is a charge-discharge curve of the aramid nanofiber/graphene/polyaniline flexible composite electrode of example 1 under different current densities.
Fig. 4 is a specific capacitance-current density curve of the aramid nanofiber/graphene/polyaniline flexible composite electrode of example 1.
Fig. 5 is a stress-strain curve of the aramid nanofiber/graphene/polyaniline flexible composite electrode of example 1.
Detailed Description
The invention is further illustrated by the following examples and figures.
The schematic diagram of the preparation process of the aramid nanofiber/graphene/conductive polymer flexible composite electrode is shown in fig. 1.
The aramid fiber is poly-p-phenylene terephthalamide (PPTA), and the aramid fiber adopted in the following embodiment is commercially available Kevlar spinning fiber.
Example 1
Adding 1g of aramid fiber yarn and 1.5g of potassium hydroxide into 500mL of dimethyl sulfoxide, and stirring at 25 ℃ for 7 days to obtain an aramid nanofiber solution.
Adding 50mL of dimethyl sulfoxide into 100mL of graphene oxide aqueous dispersion, carrying out ultrasonic treatment for 2 hours, and removing water in the mixed solution by rotary evaporation to obtain 2mg/mL of graphene oxide dimethyl sulfoxide dispersion.
1.67mL of the aramid nanofiber solution (2mg/mL) was added to 15mL of the graphene oxide dimethyl sulfoxide dispersion (2mg/mL), and after stirring at 800rpm for 1 hour, 40mL of deionized water was added, followed by further stirring at 80 ℃ for 2 hours and then at 300rpm for 1 hour to remove air bubbles. And (3) performing vacuum filtration on the aramid nano-fiber/graphene oxide/dimethyl sulfoxide mixture on a nylon filter to form a membrane. And then washing the composite film for 3 times by using deionized water, drying the composite film in air, stripping the composite film, and drying the composite film for 3 days in vacuum at the temperature of 80 ℃ to obtain the aramid nano-fiber/graphene oxide composite film.
Soaking the aramid nano-fiber/graphene oxide composite film in 20mL of hydroiodic acid for 10h, cleaning with ethanol to remove surface hydroiodic acid, soaking in ethanol for 72 h until no color is separated out, and completely removing hydroiodic acid to obtain the aramid nano-fiber/graphene composite film.
1.27mL of aniline monomer was dissolved in 45mL of 1M sulfuric acid solution and stirred for more than 1 hour until uniformly mixed to obtain a polymer electrolyte. The electrochemical deposition of polyaniline adopts a three-electrode system to cut into 1 × 1.5cm2The bulk film aramid fiber nanofiber/graphene composite film is used as a working electrode, a platinum sheet is used as an electrode, and Ag/AgCI is used as a reference electrode. The system is prepolymerized for 1min under the anode voltage of 0.8V to ensure that polyaniline nucleates between graphene sheets and aramid nanofibers, and then 0.25mA/cm is switched2And carrying out constant current polymerization, and carrying out reaction for 20min to obtain the aramid nano-fiber/graphene/conductive polymer flexible composite electrode. The prepared flexible composite electrode comprises 11 parts of aramid nano-fiber, 100 parts of graphene and 1.8 parts of polyaniline in parts by weight. The electrode was operated at a current density of 1mA/cm2Lower, specific area capacity 487.67mF/cm2(ii) a Current density 5mA/cm2Lower, specific area capacity 390.05mF/cm2(ii) a The tensile strength is 83.29 MPa; the toughness is 1.38MJ/m3(ii) a At 2mA/cm2The capacity retention rate is still 86 percent after 3000 times of charge and discharge cycles under the current density.
Example 2
The same procedure as in example 1 was followed, except that the composite film contained 25 parts of aramid nanofibers, 100 parts of graphene, and 1.8 parts of polyaniline deposit. The electrode was operated at a current density of 1mA/cm2Lower, specific area capacity 429.42mF/cm2(ii) a Current density 5mA/cm2Lower, specific area capacity 312.09mF/cm2(ii) a The tensile strength is 90.43 MPa; the toughness is 1.78MJ/m3(ii) a At 2mA/cm2The capacity retention rate is still 84 percent after 3000 times of charge and discharge cycles under the current density.
Example 3
According to the same method as in example 1, 0.67mL of aramid nanofiber solution (5mg/mL) was added to 15mL of a dimethyl sulfoxide dispersion of graphene oxide (2mg/mL), but the system was prepolymerized at 0.8V anode voltage for 0.5min to allow polyaniline to react with graphene sheets and aramid nanofibersNucleation between fibers and subsequent switching to 1.98mA/cm2Constant current polymerization, the reaction was carried out for 10 min. In the prepared flexible composite electrode, 11 parts of aramid nano-fiber, 100 parts of graphene and 0.8 part of polyaniline are deposited according to parts by weight. The electrode was operated at a current density of 1mA/cm2Lower, specific area capacity 465.33mF/cm2(ii) a Current density 5mA/cm2Lower, specific area capacity 304.12mF/cm2(ii) a Tensile strength of 79.29 MP; the toughness is 1.35MJ/m3(ii) a At 2mA/cm2The capacity retention rate is still 85 percent after 3000 times of charge and discharge cycles under the current density.
Example 4
Following the same procedure as in example 1, but with 18 parts of aramid nanofibers in the composite film, the system was prepolymerized at 0.8V anode voltage for 0.8min to nucleate polyaniline between graphene sheets and aramid nanofibers, followed by 1.5mA/cm switching2Constant current polymerization, the reaction was carried out for 15 min. In the prepared flexible composite electrode, by weight, 18 parts of aramid nanofiber, 100 parts of graphene and 1.4 parts of polyaniline are deposited. The electrode was operated at a current density of 1mA/cm2Lower, specific area capacity 481.52mF/cm2(ii) a Current density 5mA/cm2Lower, specific area capacity 353.17mF/cm2(ii) a The tensile strength is 82.34 MPa; the toughness is 1.53MJ/m3(ii) a At 2mA/cm2The capacity retention rate is still 86 percent after 3000 times of charge and discharge cycles under the current density.
Example 5
In the same manner as in example 2, 0.33mL of an aramid nanofiber solution (10mg/mL) was added to 15mL of a dimethyl sulfoxide dispersion of graphene oxide (2mg/mL), but the electrodeposited conductive polymer was changed to polypyrrole, and the prepared composite film was immersed in hydroiodic acid for 24 hours for reduction. In the prepared flexible composite electrode, 11 parts of aramid nano-fiber, 100 parts of graphene and 0.8 part of polypyrrole are deposited in parts by weight. The electrode was operated at a current density of 1mA/cm2Lower, specific area capacity 497.32mF/cm2(ii) a Current density 5mA/cm2Lower, specific area capacity 377.51mF/cm2(ii) a The tensile strength is 78.30 MPa; the toughness is 1.21MJ/m3(ii) a At 2mA/cm2The capacity retention rate is still 84 percent after 3000 times of charge and discharge cycles under the current density.
Example 6
The same procedure as in example 2 was followed, except that the electrodeposited conductive polymer was replaced with polythiophene. In the prepared flexible composite electrode, 11 parts of aramid nano-fiber, 100 parts of graphene and 0.8 part of polythiophene are deposited in parts by weight. The electrode was operated at a current density of 1mA/cm2Lower, specific area capacity 472.09mF/cm2(ii) a Current density 5mA/cm2Lower, specific area capacity 359.37mF/cm2(ii) a The tensile strength is 76.32 MPa; the toughness is 1.18MJ/m3(ii) a At 2mA/cm2The capacity retention rate is still 83 percent after 3000 times of charge and discharge cycles under the current density of (1).
Example 7
The same procedure as in example 2 was followed, except that the electrodeposited conductive polymer was changed to polyacetylene. In the prepared flexible composite electrode, 11 parts of aramid nano-fiber, 100 parts of graphene and 0.8 part of polyacetylene are deposited according to parts by weight. The electrode was operated at a current density of 1mA/cm2Lower, specific area capacity 488.23mF/cm2(ii) a Current density 5mA/cm2Lower, specific area capacity 356.49mF/cm2(ii) a The tensile strength is 77.14 MPa; the toughness is 1.27MJ/m3(ii) a At 2mA/cm2The capacity retention rate is still 84 percent after 3000 times of charge and discharge cycles under the current density.
Comparative example 1
The same procedure as in example 1 was followed except that the aramid nanofibers were not added.
The electrode was operated at a current density of 1mA/cm2Lower, specific area capacity 480.05mF/cm2(ii) a Current density 5mA/cm2Lower, specific area capacity 347.58mF/cm2(ii) a The tensile strength is 35.29 MPa; the toughness is 0.63MJ/m3(ii) a At 2mA/cm2The capacity retention rate is 76 percent when the charge and the discharge are cycled for 3000 times under the current density of (1).
Comparative example 2
The same procedure as in example 1 was followed, except that polyaniline was not deposited.
The electrode was operated at a current density of 1mA/cm2Lower, specific area capacity 190.55mF/cm2(ii) a Current density 5mA/cm2Lower, area specific capacity 98.62mF/cm2(ii) a Tensile strength of 77.55 MPa; the toughness is 1.34MJ/m3(ii) a At 2mA/cm2The capacity retention rate is 73 percent when the charge and the discharge are cycled for 3000 times under the current density of (1).
Comparative example 3
The same procedure as in example 1 was followed except that the aramid nanofibers in the composite film were 42.8 parts.
The electrode can not electrodeposit conductive polymers and has no electrochemical performance; but a tensile strength of 120.71 MPa; the toughness is 2.08MJ/m3。
Comparative example 4
The same procedure as in example 1 was followed, except that the electrodeposition time was increased to 30 min.
Polyaniline on the surface of the composite membrane is easy to fall off in electrolyte and is difficult to form a complete thin film.
Comparative example 5
The same procedure as in example 1 was followed, except that the system was prepolymerized at 0.8V anode voltage for 0.1min, followed by switching to 0.1mA/cm2Constant current polymerization, the reaction was carried out for 15 min. The electrode was operated at a current density of 1mA/cm2Lower, area specific capacity 195mF/cm2(ii) a Current density 5mA/cm2Lower, specific area capacity 99.62mF/cm2(ii) a Tensile strength of 77.55 MPa; the toughness is 1.34MJ/m3(ii) a At 2mA/cm2The capacity retention rate is 74 percent when the charge and the discharge are cycled for 3000 times under the current density of (1).
Comparative example 6
Blending a solution containing 11 parts of aramid nano-fiber, 100 parts of graphene oxide and 1.8 parts of polyaniline, performing suction filtration to form a film according to the method in the embodiment 1 to obtain an aramid nano-fiber/graphene oxide/polyaniline film, and reducing the aramid nano-fiber/graphene oxide/polyaniline film by hydroiodic acid to obtain the aramid nano-fiber/graphene/polyaniline film. The electrode was operated at a current density of 1mA/cm2Lower, specific area capacity 134.74mF/cm2(ii) a Current density 5A/cm2Lower, specific area capacity 87.93mF/cm2(ii) a The tensile strength is 33.79 MPa; toughness of 0.44MJ/m3(ii) a At 2mA/cm2Electricity (D) fromThe capacitor is circularly charged and discharged 3000 times under the current density, and the capacity retention rate is 68 percent.
Comparative example 7
The same procedure as in example 1 was followed except that the aramid nanofibers were replaced with polyethylene terephthalate (PET). After the polyaniline is deposited, the polyaniline is found to be easy to fall off, and a complete aramid nanofiber/graphene/polyaniline film is difficult to obtain.
Comparative example 8
The same procedure was followed as in example 1, except that the hydriodic acid reduction time was 4 hours. The electrode was operated at a current density of 1mA/cm2Lower, area specific capacity 94.32mF/cm2(ii) a Current density 5mA/cm2Lower, area specific capacity 32.24mF/cm2(ii) a The tensile strength is 68.34 MPa; the toughness is 1.41MJ/m3。
The method adopts simple blending and a vacuum induction suction filtration method to prepare the aramid nano-fiber/graphene oxide film, improves the toughness and mechanical strength of the graphene oxide/graphene by using the aramid nano-fiber, improves the conductivity of the aramid nano-fiber/graphene by reducing hydroiodic acid, deposits a conductive polymer on the surface of a graphene sheet by electrodeposition, and greatly improves the specific capacitance of a composite electrode by using the high specific capacitance of the conductive polymer.
Claims (7)
1. The preparation method of the aramid nanofiber/graphene/conductive polymer flexible composite electrode is characterized by comprising the following steps of:
step 1, dissolving aramid fibers by using a DMSO/KOH system to prepare an aramid nanofiber solution;
step 2, uniformly mixing the aramid nano-fiber solution and the dimethyl sulfoxide dispersion liquid of the graphene oxide, and preparing the aramid nano-fiber/graphene oxide composite film by adopting a vacuum-assisted suction filtration method;
step 3, placing the aramid fiber nanofiber/graphene oxide composite film in hydroiodic acid, carrying out reduction reaction, soaking and cleaning with ethanol to remove hydroiodic acid after the reaction is finished, and drying to obtain the aramid fiber nanofiber/graphene oxide composite film;
step 4, adopting a three-electrode bodyThe method comprises the steps of taking an aramid nano-fiber/graphene composite film as a working electrode, soaking the aramid nano-fiber/graphene composite film in a sulfuric acid solution of a conductive polymer monomer, electrochemically depositing the conductive polymer on the surface of the aramid nano-fiber/graphene film, maintaining the constant potential at 0.8V for 0.5-1 min to perform a nucleation reaction of the conductive polymer, and then keeping the constant current density at 0.25-1.98 mA/cm2Maintaining for 10-20 min for polymerization reaction, and washing and drying to obtain an aramid nanofiber/graphene/conductive polymer flexible composite electrode; the flexible composite electrode comprises 11-25 parts by weight of aramid nano-fiber, 100 parts by weight of graphene and 0.8-1.8 parts by weight of conductive polymer.
2. The preparation method of claim 1, wherein in the step 1, the concentration of the aramid nanofiber solution is 2-10 mg/mL.
3. The method according to claim 1, wherein in the step 2, the concentration of the graphene oxide in the dimethylsulfoxide dispersion liquid of the graphene oxide is 2 mg/mL.
4. The method according to claim 1, wherein the hydriodic acid is soaked for 10 hours or more and the ethanol is soaked for 72 hours in step 3.
5. The method according to claim 1, wherein in step 4, the conductive polymer monomer is aniline, pyrrole, thiophene or acetylene; the conductive polymer is polyaniline, polypyrrole, polythiophene or polyacetylene.
6. The preparation method of the flexible composite electrode according to claim 1, wherein in the step 4, the flexible composite electrode comprises 11-18 parts by weight of aramid nanofiber, 100 parts by weight of graphene and 1.4-1.8 parts by weight of conductive polymer.
7. The aramid nanofiber/graphene/conductive polymer flexible composite electrode prepared by the preparation method according to any one of claims 1 to 6.
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| CN116356573A (en) * | 2023-04-12 | 2023-06-30 | 西南交通大学 | Polyaniline modified graphene composite wave-absorbing fiber fabric, preparation method and application |
| CN116815494A (en) * | 2023-08-25 | 2023-09-29 | 烟台泰和新材高分子新材料研究院有限公司 | Aramid fiber composite conductive fiber and preparation method and application thereof |
| CN116815494B (en) * | 2023-08-25 | 2024-04-26 | 烟台泰和新材高分子新材料研究院有限公司 | Aramid fiber composite conductive fiber and preparation method and application thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100008021A1 (en) * | 2006-05-31 | 2010-01-14 | Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften E. V. | Porous Carbon Electrode With Conductive Polymer Coating |
| CN101894679A (en) * | 2009-05-20 | 2010-11-24 | 中国科学院金属研究所 | Method for preparing graphene-based flexible super capacitor and electrode material thereof |
| CN102222565A (en) * | 2010-04-15 | 2011-10-19 | 国家纳米科学中心 | Carbon-based composite electrode material and preparation method thereof, and application of the carbon-based composite electrode material to super capacitor |
| CN102723209A (en) * | 2012-05-25 | 2012-10-10 | 上海第二工业大学 | Preparation method for graphene nanosheet/conducting polymer nanowire composite material |
| CN103146007A (en) * | 2013-03-22 | 2013-06-12 | 上海交通大学 | Preparation method for graphene/aramid fibre 1414 nano-fibre composite membrane |
| CN103337381A (en) * | 2013-07-05 | 2013-10-02 | 电子科技大学 | Method for fabricating flexible electrode |
| CN103903869A (en) * | 2014-03-27 | 2014-07-02 | 华中科技大学 | Paper super capacitor and preparing method thereof |
| CN107004515A (en) * | 2014-10-31 | 2017-08-01 | 雷普索尔公司 | Composite stratified material structure based on grapheme foam or class grapheme foam |
| CN107641824A (en) * | 2017-09-26 | 2018-01-30 | 中国科学院兰州化学物理研究所苏州研究院 | Graphene conductive polymer composites and preparation method thereof |
| CN108538619A (en) * | 2018-04-17 | 2018-09-14 | 北京林业大学 | A method of preparing graphene/activated carbon/polypyrrole flexible compound electrode |
| CN110761077A (en) * | 2019-10-20 | 2020-02-07 | 南京理工大学 | Conductive polyaniline @ aramid nanofiber composite film material and preparation method thereof |
-
2020
- 2020-02-17 CN CN202010096018.1A patent/CN111276335A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100008021A1 (en) * | 2006-05-31 | 2010-01-14 | Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften E. V. | Porous Carbon Electrode With Conductive Polymer Coating |
| CN101894679A (en) * | 2009-05-20 | 2010-11-24 | 中国科学院金属研究所 | Method for preparing graphene-based flexible super capacitor and electrode material thereof |
| CN102222565A (en) * | 2010-04-15 | 2011-10-19 | 国家纳米科学中心 | Carbon-based composite electrode material and preparation method thereof, and application of the carbon-based composite electrode material to super capacitor |
| CN102723209A (en) * | 2012-05-25 | 2012-10-10 | 上海第二工业大学 | Preparation method for graphene nanosheet/conducting polymer nanowire composite material |
| CN103146007A (en) * | 2013-03-22 | 2013-06-12 | 上海交通大学 | Preparation method for graphene/aramid fibre 1414 nano-fibre composite membrane |
| CN103337381A (en) * | 2013-07-05 | 2013-10-02 | 电子科技大学 | Method for fabricating flexible electrode |
| CN103903869A (en) * | 2014-03-27 | 2014-07-02 | 华中科技大学 | Paper super capacitor and preparing method thereof |
| CN107004515A (en) * | 2014-10-31 | 2017-08-01 | 雷普索尔公司 | Composite stratified material structure based on grapheme foam or class grapheme foam |
| CN107641824A (en) * | 2017-09-26 | 2018-01-30 | 中国科学院兰州化学物理研究所苏州研究院 | Graphene conductive polymer composites and preparation method thereof |
| CN108538619A (en) * | 2018-04-17 | 2018-09-14 | 北京林业大学 | A method of preparing graphene/activated carbon/polypyrrole flexible compound electrode |
| CN110761077A (en) * | 2019-10-20 | 2020-02-07 | 南京理工大学 | Conductive polyaniline @ aramid nanofiber composite film material and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 徐勇 王新龙: "《高分子科学与工程实验》", 31 May 2019, 东南大学出版社 * |
| 徐甲强 等: "《材料合成化学与合成实例》", 28 February 2015, 哈尔滨工业大学出版社 * |
| 胡英: "《新能源与微纳电子技术》", 31 July 2015, 西安电子科技大学出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113201168A (en) * | 2021-05-12 | 2021-08-03 | 江苏省特种设备安全监督检验研究院 | Preparation method of aramid fiber/graphene/conductive polymer aerogel composite pressure sensing material |
| CN113201168B (en) * | 2021-05-12 | 2023-09-08 | 江苏省特种设备安全监督检验研究院 | Preparation method of aramid fiber/graphene/conductive polymer aerogel composite pressure sensing material |
| CN116356573A (en) * | 2023-04-12 | 2023-06-30 | 西南交通大学 | Polyaniline modified graphene composite wave-absorbing fiber fabric, preparation method and application |
| CN116356573B (en) * | 2023-04-12 | 2024-04-12 | 西南交通大学 | Polyaniline modified graphene composite wave-absorbing fiber fabric, preparation method and application |
| CN116815494A (en) * | 2023-08-25 | 2023-09-29 | 烟台泰和新材高分子新材料研究院有限公司 | Aramid fiber composite conductive fiber and preparation method and application thereof |
| CN116815494B (en) * | 2023-08-25 | 2024-04-26 | 烟台泰和新材高分子新材料研究院有限公司 | Aramid fiber composite conductive fiber and preparation method and application thereof |
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