CN110310841A - A kind of carbon cloth is as flexible super capacitor electrode material and preparation method and application - Google Patents
A kind of carbon cloth is as flexible super capacitor electrode material and preparation method and application Download PDFInfo
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- CN110310841A CN110310841A CN201910581451.1A CN201910581451A CN110310841A CN 110310841 A CN110310841 A CN 110310841A CN 201910581451 A CN201910581451 A CN 201910581451A CN 110310841 A CN110310841 A CN 110310841A
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- carbon cloth
- super capacitor
- electrode material
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- capacitor electrode
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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
- H01G11/32—Carbon-based
- H01G11/40—Fibres
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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
- H01G11/84—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
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- 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
Abstract
The invention discloses a kind of carbon cloths as flexible super capacitor electrode material and preparation method and application.The preparation method, which passes through the method that is simple and efficient carbon cloth is placed under oxygen-containing atmosphere, calcines to get to the flexible carbon cloth electrode material for super capacitor with high specific capacitance.Flexibility carbon cloth prepared by the present invention improves surface roughness and specific surface area as a kind of electrode material for super capacitor in calcination process, improve micropore richness, so that potential window with higher and specific capacity in aqueous electrolyte, capacity on original base than being promoted under long-term circulation, 20000 enclose later capacity retention ratio up to 118%, it is with good stability, while carbon cloth original structure and flexibility can be kept after calcining and circulation.The preparation method is simple and efficient, and has good practical value in supercapacitor applications.
Description
Technical field
The invention belongs to electrode material for super capacitor technical fields more particularly to a kind of carbon cloth as flexible super capacitor
Device electrode material and preparation method application.
Background technique
Due to petroleum, coalification, the increasingly reduction and the pollution of environment of the non-renewable resources such as natural gas are got worse, entirely
Ball increasingly pays close attention to the research of green energy storage device, and wherein because it is with high power density, excellent follows supercapacitor
Ring stability and it is environmentally friendly the advantages that show one's talent from numerous energy storage devices.Supercapacitor can on new-energy automobile
To be widely used, such as bus, automobile, railway, train etc., high power density, the spies such as high efficiency and long service life
Property provides high-performance and energy-saving and emission-reduction solution for user.
Supercapacitor can be divided into double layer capacitor, fake capacitance capacitor and hybrid capacitors, fake capacitance capacitor
Device is that reversible redox reaction quickly occurs using surface, is not undergone phase transition, it is possible to fast energy storage, but exactly by
It is based on oxidation-reduction process in its charge energy storage mechanism, similar to conventional batteries, these materials also have long-time stability
The disadvantage of difference and cycle life difference.Double layer capacitor based on ion the electrostatic adsorption desorption of electrode material and electrolyte interface into
Row energy storage, carbon material the most widely studied and used at present have high-specific surface area, microcellular structure abundant, good conductivity
The advantages that, and carbon material abundance is low in cost, so having captured biggish position in the market in electrochemical capacitor.
Carbon cloth is to be formed by weaving by macromolecular fibres such as polyacrylonitrile through carbonization, and carbon content is up to 95 % or more, has
Good flexibility, high stability, high conductivity and it is environmentally friendly safe and reliable the advantages that.Carbon cloth is as supercapacitor
For electrode material, potential window with higher does not need collector as support, and carbon cloth itself has flexible self-supporting
Feature avoids the influence of conductive agent and binder to electrode material.But because carbon cloth fiber surface is smooth, specific surface area is small,
Specific capacity is lower with respect to other carbon materials, so needing to be activated carbon cloth, allows to have relatively large ratio
Surface area increases micropore richness, and the advantages that keeping original electric conductivity good is constant, and then obtains and have good electrochemistry
The carbon cloth electrode material of energy.
Summary of the invention
In order to solve the problems in the existing technology, the object of the present invention is to provide a kind of carbon cloths as flexible super electricity
Container electrode material and preparation method and application.
The purpose of the present invention is realized at least through one of following technical solution.
A kind of preparation method the present invention provides carbon cloth as flexible super capacitor electrode material, including following step
It is rapid:
(1) carbon cloth is calcined under an oxygen-containing atmosphere, keeps the temperature, then cools to room temperature；
(2) by step (1), treated that carbon cloth is rinsed with water to the transparent free from admixture of washing lotion, and dry, carbon cloth after must calcine is flexible
Electrode material for super capacitor.
Preferably, step (1) oxygen-containing atmosphere is air or oxygen.
Preferably, heating rate is (2 ~ 10) DEG C/min when step (1) is calcined.
Preferably, step (1) calcination temperature is (400 ~ 600) DEG C.
Preferably, step (1) reaction soaking time is (2~3) h.
Preferably, step (1) is described is cooled to natural cooling.
Preferably, it is deionized water or distilled water that step (2), which rinses water used,.
The present invention also provides flexible super capacitor electrode materials made from a kind of preparation method.
The present invention also provides a kind of flexible super capacitor electrode materials in electrode of super capacitor preparation
Using.
Compared to the prior art, the invention has the following advantages:
Preparation the present invention provides a kind of carbon cloth being simple and efficient as flexible super capacitor electrode material, by oxygen-containing
It is calcined in atmosphere, is realized simultaneously in calcination process and improve carbon cloth specific surface area, promoted micropore richness, keep original pattern
And suppleness.It is in 1 mol/L H2SO4It is tested in electrolyte, when current density is 0.5 A/g, quality specific capacitance is reachable
255 F/g, capacity reaches 118% or so after long-term circulation 20000 is enclosed at higher current densities, as electrode of super capacitor
Material shows excellent chemical property.
Detailed description of the invention
Fig. 1 is carbon cloth isothermal nitrogen adsorption desorption curve after gained calcining in the embodiment of the present invention 1.
Fig. 2 is the pore size distribution curve of carbon cloth after gained calcining in the embodiment of the present invention 1.
Fig. 3 is the Raman spectrogram of carbon cloth after gained calcining in the embodiment of the present invention 1.
Fig. 4 is the SEM figure of carbon cloth after gained calcining in the embodiment of the present invention 1.
Fig. 5 is the SEM figure of carbon cloth before calcining.
Fig. 6 is cyclic voltammetry curve of the carbon cloth under different scanning rates after gained calcining in the embodiment of the present invention 1.
Fig. 7 is carbon cloth after gained calcining in the embodiment of the present invention 1 and calcines preceding carbon cloth under the sweep speed of 50 mV/s
Chemical property correlation curve.
Fig. 8 is constant current charge-discharge curve of the carbon cloth under different current densities after gained calcining in the embodiment of the present invention 1.
Fig. 9 is that long-term circulation of the carbon cloth under the high current density of 15A/g is bent after gained calcining in the embodiment of the present invention 1
Line.
Specific embodiment
Below with reference to embodiment and attached drawing, the present invention is further illustrated, but embodiments of the present invention are not limited to
This.
Embodiment 1
Take 3 × 5 cm2 Carbon cloth be placed in Muffle furnace and be warming up to 450 under oxygen atmosphere with the heating rate of 2 DEG C/min
DEG C, 2 h are kept the temperature, then cooled to room temperature, then rinsed to the transparent free from admixture of washing lotion with deionized water, it is dry, after obtaining calcining
Carbon cloth is flexible super capacitor electrode material.
Its physical and chemical performance characterization is shown in Fig. 1-3, is calcined from Fig. 1 and Fig. 2 as can be seen that being tested by nitrogen adsorption desorption
Carbon cloth specific surface area is by 0.2 m afterwards2/ g is increased to 951 m2/ g, pore size are mainly distributed on 0.7 nm or so.Fig. 3 is from Raman
Indicate that the carbon cloth degree of disorder increases after calcining in figure, this is that carbon cloth reacts in high temperature with air, introduces oxygen-containing function
It rolls into a ball and destroys caused by surface texture.Fig. 4 and Fig. 5 comparison shows the carbon cloth after 450 DEG C of 2 h of calcining, and can to increase micropore rich
Fu Du.And carbon cloth by 90 °, 180 ° and folds equal resilient after distortion after calcining, and illustrates carbon cloth guarantor after calcining
Hold good flexibility.Resulting carbon cloth will be prepared as electrode material for super capacitor and carry out electrochemical property test: with electrolysis
Liquid is the H of 1 mol/L2SO4Solution carries out three electrode tests (reference electrode be Ag/AgCl electrode), and voltage range is -0.6 ~
1.2 V, potential window is up to 1.8 V.Test result is as shown, Fig. 6 is to calcine preceding carbon cloth and carbon cloth after calcining in 50 mV/s
Sweep speed under chemical property compare, it can be seen that carbon cloth quality specific capacitance is obviously improved by 2 F/g before after calcining
Cyclic voltammetry curve comparison diagram of the carbon cloth under different scanning rates after being calcining to 255 F/g, Fig. 7, Fig. 8 are carbon cloth after calcining
The comparison diagram of constant current charge-discharge curve under different current densities；Fig. 9 is shown in capacity after 20000 circles recycle for a long time and keeps
Rate is up to 118% or so.
Embodiment 2
Take 3 × 5 cm2 Carbon cloth be placed in Muffle furnace in be warming up under oxygen atmosphere with the heating rate of 5 DEG C/min
450 DEG C, 3 h are kept the temperature, then cooled to room temperature, then is rinsed with deionized water to the transparent free from admixture of washing lotion, it is dry, it must calcine
Carbon cloth afterwards is flexible super capacitor electrode material.
Flexibility carbon cloth manufactured in the present embodiment is similar to 1 resulting materials pattern of embodiment, as flexible super capacitor electricity
Pole material is in chemical property, the carbon cloth before being better than calcining and the electrode material for super capacitor commercially produced.Material
Expect that related appearance structure and performance parameter can refer to the respective drawings in embodiment 1.
Embodiment 3
Take 3 × 5 cm2 Carbon cloth be placed in Muffle furnace in be warming up under oxygen atmosphere with the heating rate of 10 DEG C/min
400 DEG C, 2 h are kept the temperature, then cooled to room temperature, then is rinsed with deionized water to the transparent free from admixture of washing lotion, it is dry, it must forge
Carbon cloth after burning is flexible super capacitor electrode material.
Flexibility carbon cloth manufactured in the present embodiment is similar to 1 resulting materials pattern of embodiment, as flexible super capacitor electricity
Pole material is in chemical property, the carbon cloth before being better than calcining and the electrode material for super capacitor commercially produced.Material
Expect that related appearance structure and performance parameter can refer to the respective drawings in embodiment 1.
Embodiment 4
Take 3 × 5 cm2 Carbon cloth be placed in Muffle furnace in be warming up under oxygen atmosphere with the heating rate of 5 DEG C/min
500 DEG C, 2 h are kept the temperature, then cooled to room temperature, then is rinsed with deionized water to the transparent free from admixture of washing lotion, it is dry, it must forge
Carbon cloth after burning is flexible super capacitor electrode material.
Flexibility carbon cloth manufactured in the present embodiment is similar to 1 resulting materials pattern of embodiment, as flexible super capacitor electricity
Pole material is in chemical property, the carbon cloth before being better than calcining and the electrode material for super capacitor commercially produced.Material
Expect that related appearance structure and performance parameter can refer to the respective drawings in embodiment 1.
Embodiment 5
Take 3 × 5 cm2 Carbon cloth be placed in Muffle furnace in be warming up under oxygen atmosphere with the heating rate of 5 DEG C/min
600 DEG C, 2 h are kept the temperature, then cooled to room temperature, then is rinsed with deionized water to the transparent free from admixture of washing lotion, it is dry, it must forge
Carbon cloth after burning is flexible super capacitor electrode material.
Flexibility carbon cloth manufactured in the present embodiment is similar to 1 resulting materials pattern of embodiment, as flexible super capacitor electricity
Pole material is in chemical property, the carbon cloth before being better than calcining and the electrode material for super capacitor commercially produced.Material
Expect that related appearance structure and performance parameter can refer to the respective drawings in embodiment 1.
The foregoing is only a preferred embodiment of the present invention, not does restriction in any form to the present invention.It is all
Any equivalent variation that those skilled in the art makes above-described embodiment using technical solution of the present invention is modified or is drilled
Become etc., all of which are still within the scope of the technical scheme of the invention.
Claims (9)
1. a kind of preparation method of carbon cloth as flexible super capacitor electrode material, which comprises the following steps:
(1) carbon cloth is calcined under an oxygen-containing atmosphere, keeps the temperature, then cools to room temperature；
(2) by step (1), treated that carbon cloth is rinsed with water to the transparent free from admixture of washing lotion, and dry, carbon cloth after must calcine is flexible
Electrode material for super capacitor.
2. preparation method of the carbon cloth according to claim 1 as flexible super capacitor electrode material, which is characterized in that
Step (1) oxygen-containing atmosphere is air or oxygen.
3. preparation method of the carbon cloth according to claim 1 as flexible super capacitor electrode material, which is characterized in that
Heating rate is (2 ~ 10) DEG C/min when step (1) is calcined.
4. preparation method of the carbon cloth according to claim 1 as flexible super capacitor electrode material, which is characterized in that
Step (1) calcination temperature is (400 ~ 600) DEG C.
5. preparation method of the carbon cloth according to claim 1 as flexible super capacitor electrode material, which is characterized in that
It is (2~3) h that step (1), which reacts soaking time,.
6. preparation method of the carbon cloth according to claim 1 as flexible super capacitor electrode material, which is characterized in that
Step (1) is described to be cooled to natural cooling.
7. preparation method of the carbon cloth according to claim 1 as flexible super capacitor electrode material, which is characterized in that
It is deionized water or distilled water that step (2), which rinses water used,.
8. flexible super capacitor electrode material made from any one of claim 1~7 preparation method.
9. application of the flexible super capacitor electrode material according to any one of claims 8 in electrode of super capacitor preparation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910581451.1A CN110310841A (en) | 2019-06-29 | 2019-06-29 | A kind of carbon cloth is as flexible super capacitor electrode material and preparation method and application |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910581451.1A CN110310841A (en) | 2019-06-29 | 2019-06-29 | A kind of carbon cloth is as flexible super capacitor electrode material and preparation method and application |
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| CN110310841A true CN110310841A (en) | 2019-10-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111082053A (en) * | 2019-12-30 | 2020-04-28 | 江南大学 | Carbon-based material and application thereof in lithium ion battery |
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| CN103337379A (en) * | 2013-06-07 | 2013-10-02 | 江苏大学 | Energy storage/structure integration-combined multifunctional energy storage device and preparation method thereof |
| CN105780364A (en) * | 2016-02-26 | 2016-07-20 | 浙江大学 | Method for preparing super-microporous flexible carbon cloth and product thereof and application |
| KR20190072124A (en) * | 2017-12-15 | 2019-06-25 | 전자부품연구원 | Carbon material electrode, its surface treatment method and zinc-bromide toxic flow secondary cell having the same |
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2019
- 2019-06-29 CN CN201910581451.1A patent/CN110310841A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337379A (en) * | 2013-06-07 | 2013-10-02 | 江苏大学 | Energy storage/structure integration-combined multifunctional energy storage device and preparation method thereof |
| CN105780364A (en) * | 2016-02-26 | 2016-07-20 | 浙江大学 | Method for preparing super-microporous flexible carbon cloth and product thereof and application |
| KR20190072124A (en) * | 2017-12-15 | 2019-06-25 | 전자부품연구원 | Carbon material electrode, its surface treatment method and zinc-bromide toxic flow secondary cell having the same |
Non-Patent Citations (1)
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| HAIYAN WANG,ET AL.: ""Oxygen Groups Immobilized on Micropores for Enhancing the Pseudocapacitance"", 《ACS SUSTAINABLE CHEM. ENG.》 * |
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| CN111082053A (en) * | 2019-12-30 | 2020-04-28 | 江南大学 | Carbon-based material and application thereof in lithium ion battery |
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Application publication date: 20191008 |