CN107195906A - A kind of porous carbon cloth, preparation method and applications - Google Patents

A kind of porous carbon cloth, preparation method and applications Download PDF

Info

Publication number
CN107195906A
CN107195906A CN201710512704.0A CN201710512704A CN107195906A CN 107195906 A CN107195906 A CN 107195906A CN 201710512704 A CN201710512704 A CN 201710512704A CN 107195906 A CN107195906 A CN 107195906A
Authority
CN
China
Prior art keywords
carbon cloth
porous carbon
preparation
cloth
porous
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201710512704.0A
Other languages
Chinese (zh)
Other versions
CN107195906B (en
Inventor
刘军
谢天
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Central South University
Original Assignee
Central South University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Central South University filed Critical Central South University
Priority to CN201710512704.0A priority Critical patent/CN107195906B/en
Publication of CN107195906A publication Critical patent/CN107195906A/en
Application granted granted Critical
Publication of CN107195906B publication Critical patent/CN107195906B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/64Carriers or collectors
    • H01M4/66Selection of materials
    • H01M4/663Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104Devices therefor; Their operating or servicing
    • C02F1/46109Electrodes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/30Electrodes characterised by their material
    • H01G11/32Carbon-based
    • H01G11/36Nanostructures, e.g. nanofibres, nanotubes or fullerenes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/054Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M12/00Hybrid cells; Manufacture thereof
    • H01M12/04Hybrid cells; Manufacture thereof composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type
    • H01M12/06Hybrid cells; Manufacture thereof composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type with one metallic and one gaseous electrode
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/02Details
    • H01M8/0202Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/023Porous and characterised by the material
    • H01M8/0234Carbonaceous material
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104Devices therefor; Their operating or servicing
    • C02F1/46109Electrodes
    • C02F2001/46133Electrodes characterised by the material
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/308Dyes; Colorants; Fluorescent agents
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Power Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nanotechnology (AREA)
  • Hydrology & Water Resources (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Inert Electrodes (AREA)

Abstract

The invention discloses a kind of porous carbon cloth.In addition, the invention also discloses the preparation method of described porous carbon cloth, carbon cloth impregnates at least one of acetone, ethanol, water solvent, through drying process after, obtain pre-processing carbon cloth;Obtained pretreatment carbon cloth is sintered at 600 DEG C 650 DEG C, described porous carbon cloth is made.The present invention has prepared the porous carbon fiber cloth of uniform pore diameter using a step annealing method, and method is simple and environmentally-friendly.Porous carbon cloth of the present invention, can effective a variety of waste water from dyestuff such as degradation of methylene blue, rhodamine b, methyl orange as Electrochemical Technologies for Degradating waste water from dyestuff anode material.It regard described porous carbon cloth as growth substrate, active material is contacted with carbon cloth, this is conducive to the intercalation/deintercalation of lithium ion in the material, and being used as lithium ion, sodium-ion battery negative pole has big advantage, and this novel multistage composite structure has very high practical value.

Description

A kind of porous carbon cloth, preparation method and applications
Technical field
The present invention relates to the preparation field of carbon cloth, and in particular to a kind of carbon cloth and its preparation with porous performance Method, and its application in fields such as sewage disposal, battery materials.
Background technology
Carbon cloth is the abbreviation of carbon cloth, is a kind of yarn fabric interlocked with carbon fiber, and carbon cloth has good wear Selectivity, has been widely used in many fields, such as fuel cell membrane electrode, electrode material for super capacitor, lithium-sulfur cell thoroughly Positive electrode, lithium air battery positive electrode material, lithium ion battery negative material etc..But, the electrochemistry of commercial carbon cloth is lived Property is not high, and specific surface area is smaller, causes its energy storage capability relatively low, and these defects limit the further application of carbon cloth.
Dyeing produces a large amount of dyeing waste waters every year, and its discharge capacity accounts for the 35% of total discharged volume of industrial waste water, and dyestuff gives up The characteristics of water not only has high chemical oxygen demand, high chroma, the also persistent organic pollutants containing a large amount of " three cause " toxicity;With The continuous progress developed rapidly with method of dye industry, New-type adjuvant, dyestuff etc. is used in a large amount of of dye industry, enters one Step has aggravated the difficulty of decoloring dye waste water processing, and serious pollution is caused to water environment.Dye wastewater treatment is mainly pair It is decolourized.The processing method of waste water from dyestuff can be divided into physical-chemical process, chemical method, bioanalysis, advanced oxidation processes and electrification Method etc..Wherein electrochemical oxidation process is just widely studied application in recent years due to its exclusive superiority.Electrochemical process processing Have the following advantages:(1) using electronics as reaction reagent, non-secondary pollution is environment-friendly;(2) capacity usage ratio is high;(3) processing is set Standby simple, flow is convenient;(4) without pressurization heating, security is good;(5) it is applied widely, available for degraded COD (COD) 0.1mg/L-100mg/L organic wastewater;(6) electrochemical treatments have bactericidal action, make the microorganisms such as bacterium in waste water Lose activity.
Flexible energy storage device is in wearable flexible electronic devices, such as electronic paper, flexible screen and wearable biography The fields such as sensor cause very big concern.These inventions will be widely used and following life style exerted far reaching influence. In various energy storing devices, due to possessing high-energy-density, long-life and high rate performance, secondary cell is considered as most to have Desired candidate.For the application of flexible battery, outstanding flexible, good cyclical stability and high magnification is designed The electrode suitable for lightweight construction of performance is extremely important.Recently, the carbon material such as CNT and graphene is because it is good Electric conductivity and mechanical flexibility and the electrode material and carrier matrix that are widely used as active material, researcher have been made Many effort.On the other hand, due to its excellent structural stability, high conductivity and commercial applicability, carbon cloth has proved to be The good base material of flexible battery.Different from conventional batteries, flexible electrode is typically free of adhesive and conductive additive.Carbon cloth Key factor suitable for flexible battery is that its chemical property is stable under deformation condition.It is soft in order to develop high-performance Property battery, in the urgent need to there is good contact between active material and flexible base material.Therefore, a kind of preparation of porous carbon cloth Method, is to have very much actual application value.
The processing method of some carbon cloths is also reported in the prior art, for example, in the A of Publication No. CN 104179001 State's patent document discloses a kind of preparation method for the carbon cloth that surface is modified by wet chemistry, and the carbon cloth after cutting is put in into third Take out and dry naturally after being impregnated with ketone, obtain sample A;Sample A and concentrated nitric acid are put into hydrothermal reaction kettle, it is then that hydro-thermal is anti- Kettle is answered to be put into homogeneous reactor in 80-140 DEG C of insulation reaction 1-4 hours, reaction takes out carbon cloth after terminating, and uses deionized water Cleaned, last vacuum drying, that is, obtain surface and pass through the carbon cloth that wet chemistry is modified.
For another example, the A of Publication No. CN 103334295 Chinese patent and the A of Publication No. CN 104018340 China Patent document discloses similar carbon cloth processing method, and carbon cloth is placed in into reflow treatment in salpeter solution, and modification is made Carbon cloth.
Existing these methods need the reflow treatment under the conditions of high oxidative acid, and the performance of obtained material and pay no attention to Think.
The content of the invention
An object of the present disclosure is that there is provided a kind of fiber carbon cloth with loose structure, it is intended to lift the property of carbon cloth Energy.
Second purpose of the invention is that there is provided the porous carbon that a kind of carbon fiber simple to operate, carbon cloth has abundant space The preparation method of cloth.
It is a third object of the invention to provide the application process of described porous carbon cloth.
A kind of porous carbon cloth, the carbon fiber surface of carbon cloth has loose structure.
Preferably, described porous carbon cloth specific surface area is 3.50-5.00m2/g。
The specific surface area of existing commercial carbon cloth is only 0.20-0.30m2/ g, the ratio surface of porous carbon cloth prepared by the present invention Product maximum can reach the 2500% of commercial carbon cloth.
In the present invention, being woven into the carbon fiber of the carbon cloth has abundant space, helps to lift the application effect of the carbon cloth Really.For example, compared to plain carbon cloth, the effect of porous carbon cloth carried metal compound of the invention is more excellent.
Present invention also offers a kind of preparation method of described porous carbon cloth, carbon cloth in acetone, ethanol, water at least Impregnated in a kind of solvent, through drying process after, obtain pre-processing carbon cloth;By obtained pretreatment carbon cloth at 600 DEG C -650 DEG C Lower sintering, is made described porous carbon cloth.
Compared to existing preparation method, the present invention need not carry out reflow treatment using the nitric acid of strong oxidizing property to carbon cloth, And the carbon cloth that processing is obtained unexpectedly has abundant gap structure, with excellent performance.The present invention uses cheap original Material, it is simple to operate, the porous carbon cloth of uniform pore diameter is obtained, the material being made has high-specific surface area, high conductivity, hole Abundant the features such as, be conducive to improving the contact area of the specific capacity of material, increase electrode and electrolyte, and then help to lift material The performance of material.
Preferably, carbon cloth impregnates in acetone, ethanol, water respectively under ultrasonic wave added.
Further preferably, carbon cloth impregnates in acetone, ethanol, water successively under ultrasonic wave added, through drying process after, obtains To pretreatment carbon cloth;Obtained pretreatment carbon cloth is sintered at 600 DEG C -650 DEG C, described porous carbon cloth is made.
It is preferred that preparation method in, first carbon cloth is placed in acetone soln, under ultrasonic wave added impregnate;Acetone soak is completed It is impregnated in ethanol solution, is impregnated equally under ultrasonic wave added again afterwards;After the completion of alcohol dipping, then it is placed in water, continues super Sound auxiliary is lower to be impregnated;After the completion of water retting, processing is dried to carbon cloth, obtains pre-processing carbon cloth.In the present invention, by successively Ultrasonic immersing pretreatment under acetone, ethanol and the water condition of progress, can a step in conjunction with the sintering at temperature of the present invention The carbon cloth material being made up of the carbon fiber of porous surface is made (to that is to say, abundant sky is formed in the step of carbon fiber surface one of carbon cloth Gap structure).
In the present invention, the time of ultrasonic assistant soakage is 30-100 minutes in acetone, ethanol, water.
It that is to say, carbon cloth is immersed in acetone soln, handled 30-100 minutes in ultrasonic wave added;Then by acetone treatment Carbon cloth afterwards is placed in ethanol solution, is handled 30-100 minutes in ultrasonic wave added;Carbon cloth after Ethanol Treatment is placed in water, Ultrasonic wave added is handled 30-100 minutes, then obtains described pretreatment carbon cloth through drying process again.
Preferably, ultrasonic assistant soakage process is carried out at room temperature.
Described room temperature is preferably 10~40 DEG C.
Research shows that sintering temperature is to the performance of material, and for example porous performance, which has, influences.Sintering temperature is too low then will not Partial oxidation carbon fiber is so as to obtain porous carbon fiber cloth, and meeting over oxidation carbon cloth, causes when sintering temperature is too high The aperture of hole and quantity further expand and joined together on carbon cloth, show as carbon cloth surface it is ablated go out naked eyes can The hole seen, causes the waste of carbon cloth and the reduction of performance.In temperature preferred for this invention, contribute in carbon fiber Cloth surface it is uniform ablation suitable, the cavity of reasonable quantity that goes out size, with optimize the performance of porous carbon fiber cloth with other The application in field.
Preferably, being warming up to described sintering temperature under described heating rate, then protected at described temperature Temperature sintering.
Heating rate and sintering time are respectively provided with certain influence to the performance of final obtained material, and programming rate is excessively slow With the increase of the long diameter and quantity that can cause carbon cloth surface hole defect of sintering time so that rotten on carbon cloth surface Lose macroscopic hole, cause the waste of carbon cloth and the reduction of performance.Programming rate is too fast or sintering time is too short Can cause carbon cloth ablated surface go out the hole of uneven distribution even can not ablation go out and under a scanning electron microscope may be used The hole seen, with being as good as without the carbon cloth of sintering processes.
Preferably, the heating rate of sintering process is less than or equal to 10 DEG C/min;More preferably 5~10 DEG C/ min。
At the preferred temperature, coordinate suitable sintering time, contribute to the property of the obtained material of further lifting Energy.Preferably, sintering time is 4-6h.
Sintering process of the present invention, can be carried out under air atmosphere, can be without in protective atmosphere (such as nitrogen, argon Gas etc.) under carry out.
Preferably, the carbon cloth of pretreatment is sintered in Muffle furnace, wherein, the carbon cloth of pretreatment is close to porcelain boat bottom and put Put.Carbon cloth is close to the placement of porcelain boat bottom, it is possible to decrease contact of the carbon cloth with air, it is to avoid it is oxidized the speed of ablation With degree, so as to avoid going out macroscopic hole in carbon cloth ablated surface, it is to avoid monoblock carbon cloth is completely oxidized to Gaseous volatilization.
The carbon cloth raw material that the present invention is used can use existing commercial product;Preferably use Taiwan carbon energy WOS1002 type carbon Cloth.
A kind of preparation method of preferred porous carbon cloth of the present invention, comprises the following steps:
Step 1) use Taiwan carbon energy WOS1002 type carbon cloths, ultrasonically treated 30-100 minutes in acetone first, Zhi Hou Ultrasound is distinguished in second alcohol and water 30-100 minutes, dry, obtain the carbon cloth of pretreatment;
Step 2) in Muffle furnace 600 DEG C -650 DEG C be incubated 4-6 hour, by carbon cloth be close to porcelain boat bottom place, you can must To porous carbon cloth.
Present invention also offers the application of described porous carbon cloth;By the carbon cloth with porous pattern obtained by the present invention Existing conventional carbon cloth is substituted, for fields such as sewage disposal, electrode materials.
Porous carbon cloth produced by the present invention has the features such as high-specific surface area, high conductivity, hole enrich, compared to existing General commercial carbon cloth, the effect of porous carbon cloth carried metal compound of the present invention is remarkably reinforced;And then can be beneficial to improve The contact area of the specific capacity of material, increase electrode and electrolyte, so that the efficiency of lifting electrochemical degradation waste water from dyestuff is reached, And improve lithium ion, the purpose of sodium-ion battery performance.
Preferably, described application, is used for Electrochemical Technologies for Degradating dyestuff using described porous carbon cloth as anode material In waste water.
Using the porous carbon cloth of the invention being prepared from as Electrochemical Technologies for Degradating waste water from dyestuff anode material, can effectively it drop A variety of waste water from dyestuff such as methylene blue, rhodamine b, methyl orange are solved, porous carbon cloth is repeated and utilized by cleaning, further drop Low cost.
Material of the present invention can be additionally used in fuel cell membrane electrode, electrode material for super capacitor, and other new electricity Pond material.
Preferably, in described application, described porous carbon cloth is used to as positive electrode to prepare lithium ion battery Or the positive pole of sodium-ion battery;Described lithium ion battery is lithium-sulfur cell, lithium-air battery.Porous carbon cloth of the present invention Possess larger specific surface area and porous characteristic, and good electric conductivity, be highly suitable as element sulphur carrier and apply In lithium sulfur battery anode material.Catalyst carrier is also suitable for as lithium air battery positive electrode material.
Using the porous carbon cloth of the invention being prepared from as growth substrate, active material and carbon cloth contact area are very Greatly, this is conducive to the intercalation/deintercalation of lithium ion in the material, significantly reduces the destroyed phenomenon of sample topography in use, This cubical array yield is high, has big advantage, this novel multistage composite as lithium ion, sodium-ion battery negative pole Structure has very high practical value.
Preferably, described application, is used as ultracapacitor self-supporting electrode material by described porous carbon cloth.This hair Bright described porous carbon cloth, because it possesses larger specific surface area and porous characteristic, and good electric conductivity is very suitable Share and make ultracapacitor self-supporting electrode material.
The present invention compared with prior art, has the following advantages that:
1) raw material, the chemical reagent that the present invention is used are cheap, are readily obtained, cost-effective.
2) present invention process is simple, environment-friendly, and without using strong acid treatments such as concentrated nitric acids, carbon cloth is clear by simple ultrasound After washing, 4-6 hours are incubated at a temperature of 600 DEG C -650 DEG C directly in Muffle furnace, without inert gas shielding, to operation and environment It is required that it is not harsh, provide easy-to-use condition for industrialized production.
3) the porous carbon cloth prepared using the present invention, can be directly used for Electrochemical Technologies for Degradating waste water from dyestuff, without unnecessary step Suddenly.
4) lithium ion battery, the anode material of lithium-ion battery that the porous carbon cloth prepared using the present invention is prepared for substrate, Preparation section is simple, excellent electrochemical performance, with good specific capacity, high rate performance and cyclical stability.
Brief description of the drawings
Fig. 1 is commercial carbon cloth (CC;The raw material of embodiment 1) SEM image.
Fig. 2 is porous carbon cloth (PCC) low power number SEM image prepared by embodiment 1.
Fig. 3 be embodiment 1 in porous carbon cloth high magnification numbe SEM image.
Fig. 4 is the schematic device of Electrochemical Technologies for Degradating methylene blue dye wastewater in embodiment 4.
Fig. 5 is the spectrophotometry result of Electrochemical Technologies for Degradating methylene blue dye wastewater in embodiment 4.
Fig. 6 be embodiment 5 in load Li4Ti5O12Porous carbon cloth (LTO/PCC) XRD spectrum (a) and porous carbon cloth (PCC) XRD spectrum (b).
The high magnification numbe SEM image that Fig. 7 is LTO/PCC in embodiment 5 (scale is 5um).
The high magnification numbe SEM image that Fig. 8 is LTO/PCC in embodiment 5 (scale is 3um).
Fig. 9 be embodiment 5 in porous carbon cloth lithium electrical property charge and discharge process voltage and specific capacity curve.
Figure 10 be embodiment 5 in porous carbon cloth sodium electrical property charge and discharge process voltage and specific capacity curve.
Figure 11 is lithium electricity constant current charge-discharge stable circulation linearity curve under 5C electric currents in embodiment 5.
Figure 12 is sodium electricity constant current charge-discharge stable circulation linearity curve under 1C electric currents in embodiment 5.
Figure 13 is the electric high rate performance of lithium of the porous carbon cloth of embodiment 5;
Figure 14 is the electric high rate performance of sodium of the porous carbon cloth of embodiment 5.
Figure 15 is the electric cyclic voltammetry curve of lithium of the porous carbon cloth in embodiment 5;
Figure 16 is the electric cyclic voltammetry curve of sodium of the porous carbon cloth in embodiment 5.
Embodiment
The present invention is intended to further illustrate with reference to embodiments, is not intended to limit the present invention.
Embodiment 1
Step 1) Taiwan carbon energy WOS1002 type carbon cloths are used, carbon cloth is placed in acetone first, at room temperature ultrasonically treated 60 Minute, it is ultrasonic 60 minutes respectively at room temperature in second alcohol and water successively again afterwards, dry, obtain the carbon cloth of pretreatment;
Step 2) in Muffle furnace, in air atmosphere, carbon cloth is close to the reaction of porcelain boat bottom, then by 5 DEG C/min heatings 5 hours are incubated to 650 DEG C (sintering temperature), you can obtain porous carbon cloth.
The specific surface area of obtained porous carbon fiber cloth is 4.98m2/ g, the specific surface area of the carbon cloth of before processing is only 0.21m2/g.By the processing of embodiment 1, its specific surface area has reached the 2371% of before processing.
Fig. 1 is the SEM pictures of the commercial carbon cloth (WOS1002 types) in embodiment 1, and its surface is smooth, no pore space structure.
Fig. 2 is the SEM pictures of porous carbon cloth in embodiment 1, and by the processing of the present invention, size occur in commercial carbon cloth surfaces With all well-proportioned pore space structure of distribution.
Fig. 3 is SEM pictures under the bigger multiple of porous carbon cloth in embodiment 1, can more clearly from see porous carbon cloth Pattern..
Embodiment 2
Compare, differ only in embodiment 1, in step (2), the temperature of sintering is 600 DEG C.Handle obtained carbon cloth ratio Surface area is 4.59m2/g。
Embodiment 3
Compare, differ only in embodiment 1, in step (2), the time of sintering is 4h.Handle obtained carbon cloth and compare table Area is 4.43m2/g。
Comparative example 1
Compare, differ only in embodiment 1, in step (2), the temperature of sintering is 700 DEG C.Handle obtained carbon cloth ratio Surface area is 1.47m2/g.Performance is significantly worse than embodiment 1.
Comparative example 2
Compare, differ only in embodiment 1, in step (2), in sintering process, the heating rate of sintering process is 20 ℃/min.The specific surface area for handling obtained carbon cloth is 1.83m2/g.Performance is worse than embodiment 1.
Comparative example 3
Compare, differ only in embodiment 1, in step (2), in sintering process, be incubated under described sintering temperature Time be 8h.The specific surface area for handling obtained carbon cloth is 3.37m2/g.Obtained specific surface area is and right close to embodiment 1 The consumption of time and the energy is significantly greater than embodiment 1.
Embodiment 4
The methylene blue solution dye wastewater that 500mL concentration is 100mg/L is prepared, addition concentration is 0.05mol/L Sodium sulphate as supporting electrolyte, concentration for 0.1mol/L sulfuric acid and sodium hydrate regulator solution pH value to pH=3. Connection electrode, negative electrode connection platinum plate electrode, porous carbon cloth prepared by anode connection embodiment 1.It is electrolysed using D.C. regulated power supply, Being exemplified as in 2cm, electrolytic process between porous carbon cloth electrode and auxiliary electrode is kept for 100 revs/min using magnetic stirring apparatus Speed stirring, load current is 100mA.
The absworption peak of some strength is correspond in its ultraviolet-visible absorption spectroscopy of different molecular structures at different wave length, because This can carry out qualitative and quantitative analysis according to the position of absworption peak and intensity to measured matter.Start after electrolysis, every 30 points Clock, which draws 10mL solution, to be used to detect.Fig. 5 is to test Electrochemical Technologies for Degradating methylene blue mould using ultraviolet-uisible spectrophotometer Intend the visible spectrum variation diagram of waste water from dyestuff.The absworption peak of methylene blue is mainly at 664nm, it can be seen that feature Peak is more and more weaker with the progress of degraded, is disappeared substantially after 2h, and now degraded is basically completed, and is worked well.
Embodiment 5
Carbon cloth prepared by embodiment 1 is immersed in containing 0.3mL ammoniacal liquor, 0.1g polyvinylpyrrolidones (PVP), 0.06g In the solution of potassium chloride (KCl), 10mL deionized waters and 40mL ethanol.Then, carbon cloth is put into containing 3mL isopropyl titanates (IV) (30) in 30mL ethanol solutions.Above-mentioned two step 3 time is repeated, the sample of preparation is washed with deionized and at 50 DEG C Lower drying.One layer of hydrous titanium oxide is set to be attached on carbon cloth by first step reaction.By the sample immersion of preparation containing appropriate In LiOH water and ethanol (1: 1v) mixed solution, the stainless steel autoclave of Teflon liner is then transferred the solution into In, and kept for 15 hours at 180 DEG C.It will be covered with LTO (Li4Ti5O12) carbon cloth of presoma is heated to 550 DEG C, keeps 1 small When, obtain loading the product of LTO nanometer sheets on porous carbon cloth.
LTO/PCC electrodes without binding agent are cut into 1 × 1em sizes, and existed with Li paper tinsels and Na paper tinsels as to electrode Tested in half-cell.Button cell (2016 model) is assembled in the glove box (Mbraum, Germany) for being filled with high-purity argon gas It is middle to carry out.Li half-cells test in, electrolyte in the mixture of 1M dimethyl carbonates (DMC) and ethylene carbonate (EC) with 1: 1 volume ratio adds 1M LiPF6Composition.Na half-cells test in, electrolyte by the NaClO4 containing 1M carbonic acid two Ethyl ester (DEC) and diethyl carbonate (EC) (1: 1, the v/v) composition containing 1% fluoroethylene carbonate (FEC).Lithium ion battery Charging and discharging performance test with sodium-ion battery is carried out on blue electrical measurement test system at room temperature, Li and Na half-cells difference In 1-2.5V and 0.5-2.5V voltage range interior circulation.LTO is calculated with LTO/PCC weight divided by the area of porous carbon cloth Load quality density.Cyclic voltammetry is carried out in Chi604e electrochemical workstation systems, and test rate is 0.1mV s-1
As seen from Figure 6, LTO/PCC XRD spectrum is (a), and its feature peak match is good, loads very successful.
The SEM scan images that Fig. 7 is LTO/PCC in the present embodiment, have benefited from being uniformly distributed for the PCC that embodiment 1 is designed Pore space structure, the significant increase of surface area of active material forming core and growth, rough surface ensure that active material and carbon fiber Between good contact.
The high magnification numbe SEM scan images that Fig. 8 is LTO/PCC in the present embodiment, can be more clearly seen Li4Ti5O12 Equably it is supported on the pattern on porous carbon cloth.
Fig. 9 is constant current charge-discharge curve of the LTO/PCC electrodes in the test of lithium ion half-cell, the under 5C electric currents One time discharge capacity is 254mAh/g, and charging capacity is 177mAh/g.The capacity in follow-up cycle is nearly identical.
Figure 10 is storage Na cycle potentials distribution of the LTO/PCC electrodes 1, under 100 and 200 cycling conditions, and it is initially put Capacitance is 251mAh/g, and voltage platform is about 0.7V, and charging capacity is 170mAh/g, and voltage platform is about 1.0V.
Figure 11 shows the cycle performance of the LTO/PCC electrodes under the conditions of current density is 5C, it is seen that its cycle performance is good It is good, it is the 93% of the specific capacity of the tenth circle in the specific capacity for still having 148mAh/g after 1000 times circulate.
Figure 12 is LTO/PCC electrodes cycle performance under conditions of current density 1C, and picture is shown except first 20 circulations Under there is irreversible specific capacity to decline, follow-up circulation tends towards stability.
Figure 13 is the storage lithium high rate performance of LTO/PCC electrodes, it is seen that LTO/PCC electrodes are in 2C, 5C, 10C, 20C and 30C Charge-discharge velocity under obtain 172mAh/g, 143mAh/g, 128mAh/g, 220mAh/g and 117mAh/g capacity, even in Under 40C and 50C high current density, 115mAh/g and 112mAh/g discharge capacity can be also obtained.When speed returns to C, its Capacity is returned to initial value.
Figure 14 is the storage sodium high rate performance of TO/PCC electrodes, and LTO/PCC electrodes are in 1C, 2C, 5C, 10C, 20C, 30C and Discharge capacity under 40C charge-discharge velocity is respectively 155mAh/g, 240mAh/g, 122mAh/g, 105mAh/g, 76mAh/g, 57mAh/g and 48mAh/g.
Figure 15 be lithium ion half-cell test in, sweep speed be 0.1mV/s when under 1V to 2.5V voltages initial two The cyclic voltammetry curve of circle, reduction peak during 1.4V is Lithium-ion embeding Li4Ti5O12In form Li7Ti5O12Phase.1.63V place Oxidation peak show lithium ion from Li7Ti5O12Middle abjection.
Figure 16 is that sweep speed is initial under 0.5V to 2.5V voltages when being 0.1mV/s during sodium ion half-cell is tested The cyclic voltammetry curve of two circles.Reduction peak correspondence sodium ion insertion Li at 0.7V4Ti5O12Mutually form Li7Ti5O12With Na6LiTi5O12Phase.Oxidation peak at 1.0V corresponds to sodium ion from Na6LiTi5O12Deviate from phase.
The explanation of above example is only to help to understand application and the core concept of the present invention, it is noted that do not departed from On the premise of this method Spirit Essence and principle, some improvement can also be carried out to this method, these improvement fall within the present invention In scope of the claims.

Claims (10)

1. a kind of porous carbon cloth, it is characterised in that the carbon fiber surface of carbon cloth has loose structure.
2. porous carbon cloth as claimed in claim 1, it is characterised in that the specific surface area of described carbon fiber is 3.50- 5.00m2/g。
3. the preparation method of the porous carbon cloth described in a kind of claim 1 or 2, it is characterised in that carbon cloth is in acetone, ethanol, water At least one of impregnate in solvent, through drying process after, obtain pre-processing carbon cloth;By obtained pretreatment carbon cloth 600 Sintered at DEG C -650 DEG C, described porous carbon cloth is made.
4. the preparation method of porous carbon cloth as claimed in claim 3, it is characterised in that the heating rate of sintering process be less than or Equal to 10 DEG C/min.
5. the preparation method of porous carbon cloth as claimed in claim 3, it is characterised in that sintering time is 4-6h.
6. the preparation method of porous carbon cloth as claimed in claim 3, it is characterised in that the carbon cloth of pretreatment burns in Muffle furnace Knot, wherein, the carbon cloth of pretreatment is close to porcelain boat bottom and set.
7. the preparation method of porous carbon cloth as claimed in claim 3, it is characterised in that carbon cloth is under ultrasonic wave added respectively third Impregnated in ketone, ethanol, water;
Ultrasonic assistant soakage process is carried out at room temperature;The time of ultrasonic assistant soakage is 30-100 minutes.
8. the application of porous carbon cloth made from the preparation method described in a kind of any one of claim 3~7, it is characterised in that make It is used for for anode material in Electrochemical Technologies for Degradating waste water from dyestuff.
9. the application of porous carbon cloth made from the preparation method described in a kind of any one of claim 3~7, it is characterised in that make It is used to prepare lithium ion battery or sodium-ion battery for positive electrode;Described lithium ion battery is lithium-sulfur cell or lithium air electricity Pond.
10. the application of porous carbon cloth made from the preparation method described in a kind of any one of claim 3~7, it is characterised in that use Make ultracapacitor self-supporting electrode material.
CN201710512704.0A 2017-06-28 2017-06-28 Porous carbon cloth, preparation method and application thereof Active CN107195906B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710512704.0A CN107195906B (en) 2017-06-28 2017-06-28 Porous carbon cloth, preparation method and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710512704.0A CN107195906B (en) 2017-06-28 2017-06-28 Porous carbon cloth, preparation method and application thereof

Publications (2)

Publication Number Publication Date
CN107195906A true CN107195906A (en) 2017-09-22
CN107195906B CN107195906B (en) 2021-01-05

Family

ID=59880519

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710512704.0A Active CN107195906B (en) 2017-06-28 2017-06-28 Porous carbon cloth, preparation method and application thereof

Country Status (1)

Country Link
CN (1) CN107195906B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108172417A (en) * 2017-12-28 2018-06-15 南昌航空大学 A kind of carbon cloth surfaces method of modifying for flexible super capacitor electrode
CN108470882A (en) * 2018-03-30 2018-08-31 江汉大学 Tin oxide is modified carbon cloth base lithium and sodium metal negative electrode and preparation method thereof
CN109727780A (en) * 2018-12-26 2019-05-07 武汉理工大学 Activated fibre carbon cloth material and its preparation method and application
CN109742327A (en) * 2018-12-29 2019-05-10 西安鸿钧睿泽新材料科技有限公司 Preparation method of self-supporting flexible lithium ion battery carbon cloth loaded LiFePO4 positive electrode material
CN110306203A (en) * 2019-07-09 2019-10-08 郑州大学 A kind of cathode generates the electrochemical appliance and method of the hydrogen peroxide organic wastewater of anode processing simultaneously
CN110496544A (en) * 2019-08-28 2019-11-26 山东大学 A kind of preparation method and application of inorganic-organic hybrid carbon-based conductive ultrafiltration membrane
CN112542327A (en) * 2020-12-04 2021-03-23 辽宁大学 Hierarchical porous carbon cloth material, preparation method thereof and application of hierarchical porous carbon cloth material as supercapacitor electrode
CN113161624A (en) * 2021-05-07 2021-07-23 哈尔滨工业大学 Preparation method of elastic lithium battery with woven structure
CN113972375A (en) * 2021-10-21 2022-01-25 合肥工业大学 Preparation method and application of porous carbon fiber/tungsten oxide self-supporting lithium-sulfur battery positive electrode material

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102633327A (en) * 2012-05-02 2012-08-15 天津大学 Novel high-concentration dye wastewater treatment method
CN103043776A (en) * 2012-12-04 2013-04-17 哈尔滨工业大学 Sleeve-type microorganism catalysis electrolysis device and method for degrading waste water by using sleeve-type microorganism catalysis electrolysis device
CN103334295A (en) * 2013-06-07 2013-10-02 江苏大学 Activation method for enhancing specific capacitance of polyacrylonitrile-based carbon fibers
CN103623778A (en) * 2013-12-04 2014-03-12 扬州大学 Modification method for activated carbon fiber
CN104174646A (en) * 2014-08-29 2014-12-03 东南大学 Method and system for purifying soil with pesticide degradation-resistant organic pollutants by using microbial fuel cell
CN105236686A (en) * 2015-10-30 2016-01-13 东南大学 Sewage treatment method for purifying refractory organic pollutants
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102633327A (en) * 2012-05-02 2012-08-15 天津大学 Novel high-concentration dye wastewater treatment method
CN103043776A (en) * 2012-12-04 2013-04-17 哈尔滨工业大学 Sleeve-type microorganism catalysis electrolysis device and method for degrading waste water by using sleeve-type microorganism catalysis electrolysis device
CN103334295A (en) * 2013-06-07 2013-10-02 江苏大学 Activation method for enhancing specific capacitance of polyacrylonitrile-based carbon fibers
CN103623778A (en) * 2013-12-04 2014-03-12 扬州大学 Modification method for activated carbon fiber
CN104174646A (en) * 2014-08-29 2014-12-03 东南大学 Method and system for purifying soil with pesticide degradation-resistant organic pollutants by using microbial fuel cell
CN105236686A (en) * 2015-10-30 2016-01-13 东南大学 Sewage treatment method for purifying refractory organic pollutants
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

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108172417A (en) * 2017-12-28 2018-06-15 南昌航空大学 A kind of carbon cloth surfaces method of modifying for flexible super capacitor electrode
CN108470882A (en) * 2018-03-30 2018-08-31 江汉大学 Tin oxide is modified carbon cloth base lithium and sodium metal negative electrode and preparation method thereof
CN109727780A (en) * 2018-12-26 2019-05-07 武汉理工大学 Activated fibre carbon cloth material and its preparation method and application
CN109742327A (en) * 2018-12-29 2019-05-10 西安鸿钧睿泽新材料科技有限公司 Preparation method of self-supporting flexible lithium ion battery carbon cloth loaded LiFePO4 positive electrode material
CN110306203A (en) * 2019-07-09 2019-10-08 郑州大学 A kind of cathode generates the electrochemical appliance and method of the hydrogen peroxide organic wastewater of anode processing simultaneously
CN110306203B (en) * 2019-07-09 2021-08-06 郑州大学 Electrochemical device and method for generating hydrogen peroxide at cathode and simultaneously carrying out anodic treatment on organic wastewater
CN110496544A (en) * 2019-08-28 2019-11-26 山东大学 A kind of preparation method and application of inorganic-organic hybrid carbon-based conductive ultrafiltration membrane
CN110496544B (en) * 2019-08-28 2021-10-08 山东大学 Preparation method and application of inorganic-organic composite carbon-based conductive ultrafiltration membrane
CN112542327A (en) * 2020-12-04 2021-03-23 辽宁大学 Hierarchical porous carbon cloth material, preparation method thereof and application of hierarchical porous carbon cloth material as supercapacitor electrode
CN113161624A (en) * 2021-05-07 2021-07-23 哈尔滨工业大学 Preparation method of elastic lithium battery with woven structure
CN113972375A (en) * 2021-10-21 2022-01-25 合肥工业大学 Preparation method and application of porous carbon fiber/tungsten oxide self-supporting lithium-sulfur battery positive electrode material

Also Published As

Publication number Publication date
CN107195906B (en) 2021-01-05

Similar Documents

Publication Publication Date Title
CN107195906A (en) A kind of porous carbon cloth, preparation method and applications
CN108899530B (en) Silicon-carbon composite material and preparation method and application thereof
CN110223847A (en) A kind of electrode material for super capacitor and preparation method
CN106876673B (en) The method that one-step method prepares the core-shell structure lithium sulfur battery anode material that titanium dioxide and graphene bilayer coat altogether
CN106784745A (en) The sodium-ion battery method for manufacturing electric spinning of cobaltosic oxide carbon nano-fiber
CN110581028A (en) Preparation method of manganese dioxide/carbon-based flexible electrode material
CN110265643A (en) A kind of Sb2O5The preparation method of/carbon cloth flexibility anode material of lithium-ion battery
CN107140633A (en) A kind of preparation method and applications of the activated carbon with high specific surface area of biomass derived
CN106853968A (en) A kind of preparation method of multielement codope lead carbon battery activated carbon
CN109167071B (en) Electrode for all-vanadium redox flow battery and preparation method thereof
CN108091888A (en) A kind of method of modifying of carbon felt for vanadium redox battery electrode
CN115275189A (en) Nitrogen-doped rice hull-based hard carbon negative electrode material and preparation method and application thereof
Uvarov et al. Surface electrochemical treatment of carbon materials for supercapacitors
Chen et al. Surface‐Wrinkle‐Modified Graphite Felt with High Effectiveness for Vanadium Redox Flow Batteries
Gui et al. Investigation on the effect of different mild acidic electrolyte on ZIBs electrode/electrolyte interface and the performance improvements with the optimized cathode
CN117239102A (en) Sodium ion battery positive electrode material, preparation method thereof and sodium ion battery
CN108461301A (en) A kind of MnO2-PPy/H-TiO2Ternary core-shell array hybridizations electrode material and preparation method thereof
Zarei-Jelyani et al. Investigation of hydroxylated carbon felt electrode in vanadium redox flow battery by using optimized supporting electrolyte
CN106356196A (en) Manganese dioxide/carbon paper composite electrode material and preparation method thereof
KR101904111B1 (en) Negative Electrode for Non-aqueous Aluminum ion Battery and Method for Preparation of the Same
CN110265644A (en) A kind of preparation method of antimony pentoxide/polyacrylic acid of reticulated porous structures/carbon cloth flexibility anode material of lithium-ion battery
CN105957731B (en) A kind of all solid state asymmetric capacitor and preparation method thereof
CN109256561A (en) Hard carbon cathode material and preparation method thereof and the method for making battery using it
CN107658425A (en) A kind of needle-like bismuth sulfide carbon cloth electrode and preparation method thereof
CN110071281A (en) Honeycomb cotton carbon/sulphur composite material and preparation method and application

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant