CN110323080A - The preparation method of aqueous super capacitor - Google Patents
The preparation method of aqueous super capacitor Download PDFInfo
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- CN110323080A CN110323080A CN201910599158.8A CN201910599158A CN110323080A CN 110323080 A CN110323080 A CN 110323080A CN 201910599158 A CN201910599158 A CN 201910599158A CN 110323080 A CN110323080 A CN 110323080A
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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
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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
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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
- H01G11/36—Nanostructures, e.g. nanofibres, nanotubes or fullerenes
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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
- H01G11/46—Metal oxides
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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
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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 preparation methods of aqueous super capacitor, the low technical problem of the aqueous super capacitor operating voltage for solving existing method preparation.Technical solution is that the concentrated sulfuric acid is added dropwise after mixing carbon cloth, graphite with sodium nitrate, KMnO is added4, be added and distilled water and stir, then by H2O2It is added in mixture solution, hydrazine hydrate is finally added into solution and heats, obtains reduced graphene cladding carbon cloth, the cathode as supercapacitor.CO is prepared using electrochemical workstation graphene coated carbon cloth3O4NSs/ACC@RGO combination electrode material, the anode as supercapacitor.Using porous polypropylene film as diaphragm, based on water-soluble electrolytes solution, it is assembled into aqueous super capacitor.After tested, aqueous super capacitor operating voltage prepared by the present invention is low is increased to 2.2V by the 1.4V of background technique.
Description
Technical field
The present invention relates to a kind of preparation method of supercapacitor, in particular to a kind of preparation side of aqueous super capacitor
Method.
Background technique
Supercapacitor is also referred to as electrochemical capacitor, is a kind of novel energy-storing between traditional capacitor and battery
There is device excellent reversible charge-discharge performance and large capacity energy-storage property, advantage to have: power density is high, have extended cycle life,
Charging rate is fast, can instantaneous high-current discharge, green non-pollution, there is very wide application prospect.Currently, supercapacitor
The shortcomings that be that its energy density is limited.The low density main cause of super capacitor energy is caused to be: in corresponding voltage window
Under mouthful, electrochemically stable potential window is narrow, specific capacitance is small.
In terms of electrode material, oxide fake capacitance is had great potential.Cobalt oxide (CO3O4) it is used as a kind of typical oxygen
Compound fake capacitance material, due to its theoretical specific capacitance with higher, the advantages such as preparation cost is low and obtained extensive research.
A kind of document " the asymmetric super capacitor of water system based on cobaltosic oxide of Xiao Ting, Xu Junjie, Tan Xinyu, et al.
The preparation method of device " discloses a kind of preparation method of water system Asymmetric Supercapacitor based on cobaltosic oxide.This method
It is to be negative pole with cobaltosic oxide/polypyrrole composite Nano linear array, for anode with water-soluble with cobaltosic oxide nano linear array
Water system Asymmetric Supercapacitor is assembled into based on property electrolyte solution.
In this method, the operating voltage of water system Asymmetric Supercapacitor only reaches 1.4V, and quality specific capacitance can be only up to
To 335.34Fg-1, during loop test, the decomposition of electrode material will lead to the reduction of capacitor and energy density.
Summary of the invention
Aqueous super capacitor operating voltage in order to overcome the shortcomings of existing method preparation is low, and the present invention provides a kind of water
It is the preparation method of supercapacitor.This method is added dropwise after mixing the carbon cloth after washing and drying, graphite with sodium nitrate
The concentrated sulfuric acid simultaneously stirs, and is slowly added to KMnO4And stir, distilled water stirring is added, then dropwise by H2O2It is added to mixture solution
In, until solution becomes to clarify.Hydrazine hydrate is finally added into solution and heats, carbon cloth is washed, is dried in vacuo to obtain
Reduced graphene coats carbon cloth, the cathode as supercapacitor.Using electrochemical workstation use graphene coated carbon cloth as
Working electrode, platinum sheet is as counterelectrode, and calomel electrode is as reference electrode, Co (NO3)2 6H2O carries out electrochemistry as electrolyte
Deposition.Post-depositional carbon cloth is washed, is dried, anneal after obtain CO3O4NSs/ACC@RGO combination electrode material, as super
The anode of grade capacitor.According to the operating voltage and specific capacitance of anode and cathode to ACC@RGO negative electrode material and CO3O4/ACC@
RGO positive electrode is cut, and using porous polypropylene film as diaphragm, based on water-soluble electrolytes solution, is assembled into water
It is supercapacitor.After tested, the low 1.4V by background technique of aqueous super capacitor operating voltage prepared by the present invention is improved
To 2.2V.
The technical solution adopted by the present invention to solve the technical problems: a kind of preparation method of aqueous super capacitor,
Feature be the following steps are included:
Step 1: preparation ACC@RGO material cathode.
With ethyl alcohol and distilled water pre-cleaning carbon cloth 10-30min under ultrasonic conditions, the vacuum at 60-90 DEG C later
It is 5-8 hours dry.Graphite flake, carbon cloth and sodium nitrate are added in beaker according to mass ratio for 1:40:41,50- is added dropwise
98% concentrated sulfuric acid of 80ml concentration simultaneously stirs, mixing time 20-60min at -5 DEG C~-8 DEG C.
It is 5-8 times of KMnO of carbon cloth quality by quality4It is slowly added to be vigorously stirred 1- in ice bath in above-mentioned mixed solution
3h is then transferred in oil bath in 20-50 DEG C of stirring 1-3h, and then solution and 100-150ml distilled water are slowly mixed together in ice bath
Middle stirring 1-3h, then mixed solution is stirred into 20-60min in 80-98 DEG C of oil bath.Finally dropwise by H2O2It is added to mixture
In solution, until solution becomes to clarify.
The hydrazine hydrate that 2-5ml concentration is 96.3mmol is added, by solution in water-cooled condenser in 100-130 DEG C of oil bath
20-30h is heated under condensation.Carbon cloth is carried out deionized water to wash 3-5 times, is dried in vacuo 8-12h at 60-80 DEG C later
After obtain ACC@RGO, the cathode as supercapacitor.
Step 2: preparation CO3O4/ ACC@RGO material anode
Using electrochemical workstation under the current potential of -0.8~-1.0V, use the ACC@RGO of step 1 preparation as work
Electrode, platinum sheet is as counterelectrode, and for calomel electrode as reference electrode, concentration is 0.01-10mol L-1Co (NO3)2 6H2O makees
Electrochemical deposition is carried out for electrolyte, the time of electro-deposition is 600-3600s.
Post-depositional carbon cloth is washed with deionized, 8-12h is dried in air at 60-90 DEG C, at 350-400 DEG C
Lower annealing 2-4h obtains CO3O4NSs/ACC@RGO combination electrode material, the anode as supercapacitor.
Step 3: being assembled into aqueous super capacitor based on electrolyte solution.
With Li2SO4And CoSO4Water-soluble electrolyte, Li are configured for solute2SO4And CoSO4The concentration of solute is respectively 2-
3mol L-1With 0.1-2mol L-1。
According to the operating voltage and specific capacitance of anode and cathode to ACC@RGO negative electrode material and CO3O4/ ACC@RGO anode material
Material is cut, and using porous polypropylene film as diaphragm, based on water-soluble electrolytes solution, is assembled into aqueous super capacitor
Device.
The beneficial effects of the present invention are: this method the carbon cloth after washing and drying, graphite are mixed with sodium nitrate after dropwise
The concentrated sulfuric acid is added and stirs, is slowly added to KMnO4And stir, distilled water stirring is added, then dropwise by H2O2It is molten to be added to mixture
In liquid, until solution becomes to clarify.Hydrazine hydrate is finally added into solution and heats, carbon cloth is washed, is dried in vacuo
Carbon cloth is coated to reduced graphene, the cathode as supercapacitor.Made using electrochemical workstation graphene coated carbon cloth
For working electrode, platinum sheet is as counterelectrode, and calomel electrode is as reference electrode, Co (NO3)2 6H2O carries out electrification as electrolyte
Learn deposition.Post-depositional carbon cloth is washed, is dried, anneal after obtain CO3O4NSs/ACC@RGO combination electrode material, as
The anode of supercapacitor.According to the operating voltage and specific capacitance of anode and cathode to ACC@RGO negative electrode material and CO3O4/ACC@
RGO positive electrode is cut, and using porous polypropylene film as diaphragm, based on water-soluble electrolytes solution, is assembled into water
It is supercapacitor.
After tested, its anode of aqueous super capacitor prepared by the present invention is in 1Ag-1Under show 845Fg-1It is high than electricity
Hold, supercapacitor shows the high voltage window of 2.2V in water system electrolyte, and power density is 1100W Kg-1When have
99WhKg-1Ultra high energy density and 10000 times circulation after capacity retention ratio be 168% overlength cycle life, meanwhile, valence
Lattice are cheap, highly-safe.
It elaborates with reference to the accompanying drawings and detailed description to the present invention.
Detailed description of the invention
Fig. 1 is Co prepared by embodiment of the present invention method 13O4The XRD spectrum of/ACC@RGO sample.
Fig. 2 is dimensional Co prepared by embodiment of the present invention method 23O4The TEM image of nanometer sheet sample.
Fig. 3 is CO prepared by embodiment of the present invention method 13O4GCD of/ACC@RGO the electrode in three electrode test systems is bent
Line.
Fig. 4 is CO prepared by embodiment of the present invention method 23O4/ ACC@RGO//ACC@RGO ASCs device two electrodes not
With sweep speed 1-10mV s-1Under CV curve.
Fig. 5 is CO prepared by embodiment of the present invention method 33O4/ ACC@RGO//ACC@RGO ASCs device is in 5A g-1When
Cycle performance curve.
Fig. 6 is CO prepared by embodiment of the present invention method 33O4The power density of/ACC@RGO//ACC@RGO ASCs device
With the logarithmic relationship figure of corresponding energy density.
Specific embodiment
Following embodiment referring to Fig.1-6.
Embodiment 1:
Step 1: preparation ACC@RGO material cathode:
1. using ethyl alcohol and distilled water pre-cleaning carbon cloth 30min under ultrasonic conditions, 5 are dried in vacuo at 60 DEG C later
Hour.Graphite flake, carbon cloth and sodium nitrate are added in beaker according to mass ratio for 1:40:41,50ml concentration 98% is added dropwise
The concentrated sulfuric acid simultaneously stirs, mixing time 20min at -5 DEG C.
2. being 5 times of KMnO of carbon cloth quality by quality4It is slowly added to be vigorously stirred 1h in ice bath in above-mentioned mixed solution,
It is then transferred in oil bath in 20 DEG C of stirring 1h, then solution and 100ml distilled water is slowly mixed together in ice bath and stir 1h, then will
Mixed solution stirs 20min in 80 DEG C of oil baths.Dropwise by H2O2It is added in mixture solution, until solution becomes to clarify.
3. the hydrazine hydrate that 2ml concentration is 96.3mmol is added, by solution in the condensation of water-cooled condenser in 100 DEG C of oil baths
Effect is lower to heat 20h.Carbon cloth is carried out deionized water to wash 3 times, 8h is dried in vacuo at 60 DEG C later and obtains ACC@RGO, make
For the cathode of supercapacitor.
Step 2: preparation CO3O4/ ACC@RGO material anode:
1. use ACC@RGO as working electrode using electrochemical workstation under the current potential of (compared with SCE) -0.8V,
Platinum sheet is as counterelectrode, and for calomel electrode as reference electrode, concentration is 10mol L-1Co (NO3)2 6H2O as electrolyte into
Row electrochemical deposition, the time of electro-deposition are 600s.
2. post-depositional carbon cloth is washed with deionized, then 8h is dried in air at 60 DEG C, finally at 350 DEG C
Anneal 2h, obtains CO3O4NSs/ACC@RGO combination electrode material, the anode as supercapacitor.
Step 3: being assembled into aqueous super capacitor based on electrolyte solution:
1. with Li2SO4And CoSO4Water-soluble electrolyte, Li are configured for solute2SO4And CoSO4The concentration of solute is respectively
2mol L-1With 0.1mol L-1。
2. according to the operating voltage and specific capacitance of anode and cathode to ACC@RGO negative electrode material and CO3O4/ ACC@RGO anode
Material is cut, and using porous polypropylene film as diaphragm, based on water-soluble electrolytes solution, is assembled into aqueous super electricity
Container.
As can be seen from Figure 1 two dimension CO3O4Nanometer sheet has the cubic structure of Fd-3m (227) space group, lattice parameterVery close cube
As can be seen from Figure 3 the operating voltage window of electrode is 1.2V, much higher than the operating voltage in alkaline electrolyte
Window.It may also be seen that being 1Ag in current density-1In the case where, it the use of the specific capacitance that formula is calculated is 845F
g-1.When current density reaches 10Ag-1When, specific capacitance still keeps 569Fg-1, show that its good reversibility, specific capacity are high.
Embodiment 2:
Step 1: preparation ACC@RGO material cathode:
1. using ethyl alcohol and distilled water pre-cleaning carbon cloth 10min under ultrasonic conditions, 8 are dried in vacuo at 90 DEG C later
Hour.Graphite flake, carbon cloth and sodium nitrate are added in beaker according to mass ratio for 1:40:41,80ml concentration 98% is added dropwise
The concentrated sulfuric acid simultaneously stirs, mixing time 60min at -8 DEG C.
2. being 8 times of KMnO of carbon cloth quality by quality4It is slowly added to be vigorously stirred 3h in ice bath in above-mentioned mixed solution,
It is then transferred in oil bath in 50 DEG C of stirring 3h, then solution and 150ml distilled water is slowly mixed together in ice bath and stir 3h, then will
Mixed solution stirs 60min in 98 DEG C of oil baths.Dropwise by H2O2It is added in mixture solution, until solution becomes to clarify.
3. the hydrazine hydrate that 5ml concentration is 96.3mmol is added, by solution in the condensation of water-cooled condenser in 130 DEG C of oil baths
Effect is lower to heat 30h.It is washed 5 times finally, carbon cloth is carried out deionized water, is dried in vacuo 12h at 80 DEG C later and obtains ACC@
RGO, the cathode as supercapacitor.
Step 2: preparation CO3O4/ ACC@RGO material anode:
1. use ACC@RGO as working electrode using electrochemical workstation under the current potential of (compared with SCE) -1.0V,
Platinum sheet is as counterelectrode, and for calomel electrode as reference electrode, concentration is 0.1mol L-1Co (NO3)2 6H2O as electrolyte into
Row electrochemical deposition, the time of electro-deposition are 2500s.
2. post-depositional carbon cloth is washed with deionized, then 12h is dried in air at 90 DEG C, finally at 400 DEG C
Lower annealing 4h obtains CO3O4NSs/ACC@RGO combination electrode material, the anode as supercapacitor.
Step 3: being assembled into aqueous super capacitor based on electrolyte solution:
1. with Li2SO4And CoSO4Water-soluble electrolyte, Li are configured for solute2SO4And CoSO4The concentration of solute is respectively
2mol L-1With 0.3mol L-1。
2. according to the operating voltage and specific capacitance of anode and cathode to ACC@RGO negative electrode material and CO3O4/ ACC@RGO anode
Material is cut, and using porous polypropylene film as diaphragm, based on water-soluble electrolytes solution, is assembled into aqueous super electricity
Container.
As can be seen from Figure 4 the operating voltage window of aqueous super capacitor is 2.2V, much higher than in alkaline electrolyte
Operating voltage window.CV curve shape remains unchanged, and shows its good high rate performance.
Embodiment 3:
Step 1: preparation ACC@RGO material cathode:
1. using ethyl alcohol and distilled water pre-cleaning carbon cloth 20min under ultrasonic conditions, 6 are dried in vacuo at 80 DEG C later
Hour.Graphite flake, carbon cloth and sodium nitrate are added in beaker according to mass ratio for 1:40:41,60ml concentration 98% is added dropwise
The concentrated sulfuric acid simultaneously stirs, mixing time 40min at -6 DEG C.
2. being 6 times of KMnO of carbon cloth quality by quality4It is slowly added to be vigorously stirred 2h in ice bath in above-mentioned mixed solution,
It is then transferred in oil bath in 40 DEG C of stirring 2h, then solution and 120ml distilled water is slowly mixed together in ice bath and stir 2h, then will
Mixed solution stirs 30min in 90 DEG C of oil baths.Dropwise by H2O2It is added in mixture solution, until solution becomes to clarify.
3. the hydrazine hydrate that 3ml concentration is 96.3mmol is added, by solution in the condensation of water-cooled condenser in 120 DEG C of oil baths
The lower heating of effect is for 24 hours.Carbon cloth is most carried out deionized water to wash 3 times, 10h is dried in vacuo at 65 DEG C later and obtains ACC@RGO,
Cathode as supercapacitor.
Step 2: preparation CO3O4/ ACC@RGO material anode:
1. use ACC@RGO as working electrode using electrochemical workstation under the current potential of (compared with SCE) -0.9V,
Platinum sheet is as counterelectrode, and for calomel electrode as reference electrode, concentration is 0.01mol L-1Co (NO3)2 6H2O is as electrolyte
Electrochemical deposition is carried out, the time of electro-deposition is 3600s.
2. post-depositional carbon cloth is washed with deionized, then 10h is dried in air at 80 DEG C, finally at 380 DEG C
Lower annealing 3h obtains CO3O4NSs/ACC@RGO combination electrode material, the anode as supercapacitor.
Step 3: being assembled into aqueous super capacitor based on electrolyte solution:
1. with Li2SO4And CoSO4Water-soluble electrolyte, Li are configured for solute2SO4And CoSO4The concentration of solute is respectively
3mol L-1With 2mol L-1。
2. according to the operating voltage and specific capacitance of anode and cathode to ACC@RGO negative electrode material and CO3O4/ ACC@RGO anode
Material is cut, and using porous polypropylene film as diaphragm, based on water-soluble electrolytes solution, is assembled into aqueous super electricity
Container.
As can be seen from Figure 5 capacity retention ratio of the device after 10000 circulations is 168%, is followed with overlength
The ring service life.
As can be seen from Figure 6 the device has 99WhKg compared with other aqueous super capacitors-1Superenergy it is close
Degree is 1100W Kg in power density-1When.
Claims (1)
1. a kind of preparation method of aqueous super capacitor, it is characterised in that the following steps are included:
Step 1: preparation ACC@RGO material cathode；
With ethyl alcohol and distilled water pre-cleaning carbon cloth 10-30min under ultrasonic conditions, it is dried in vacuo at 60-90 DEG C later
5-8 hours；Graphite flake, carbon cloth and sodium nitrate are added in beaker according to mass ratio for 1:40:41, it is dense that 50-80ml is added dropwise
It spends 98% concentrated sulfuric acid and is stirred at -5 DEG C~-8 DEG C, mixing time 20-60min；
It is 5-8 times of KMnO of carbon cloth quality by quality4It is slowly added to be vigorously stirred 1-3h in ice bath in above-mentioned mixed solution, then
It is transferred in oil bath in 20-50 DEG C of stirring 1-3h, solution is slowly mixed together with 100-150ml distilled water then and is stirred in ice bath
1-3h, then mixed solution is stirred into 20-60min in 80-98 DEG C of oil bath；Finally dropwise by H2O2It is added in mixture solution,
Until solution becomes to clarify；
The hydrazine hydrate that 2-5ml concentration is 96.3mmol is added, by solution in the condensation of water-cooled condenser in 100-130 DEG C of oil bath
Effect is lower to heat 20-30h；Carbon cloth is carried out deionized water to wash 3-5 times, is obtained after being dried in vacuo 8-12h at 60-80 DEG C later
Cathode to ACC@RGO, as supercapacitor；
Step 2: preparation CO3O4/ ACC@RGO material anode；
Using electrochemical workstation under the current potential of -0.8~-1.0V, the ACC@RGO for using step 1 to prepare is electric as work
Pole, platinum sheet is as counterelectrode, and for calomel electrode as reference electrode, concentration is 0.01-10mol L-1Co (NO3)26H2O is as electricity
It solves matter and carries out electrochemical deposition, the time of electro-deposition is 600-3600s；
Post-depositional carbon cloth is washed with deionized, 8-12h is dried in air at 60-90 DEG C, is moved back at 350-400 DEG C
Fiery 2-4h obtains CO3O4NSs/ACC@RGO combination electrode material, the anode as supercapacitor；
Step 3: being assembled into aqueous super capacitor based on electrolyte solution；
With Li2SO4And CoSO4Water-soluble electrolyte, Li are configured for solute2SO4And CoSO4The concentration of solute is respectively 2-3mol L-1And 0.1-2molL-1；
According to the operating voltage and specific capacitance of anode and cathode to ACC@RGO negative electrode material and CO3O4/ ACC@RGO positive electrode into
Row is cut, and using porous polypropylene film as diaphragm, based on water-soluble electrolytes solution, is assembled into aqueous super capacitor.
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| CN115295320A (en) * | 2022-09-09 | 2022-11-04 | 南京工业大学 | Preparation method of carbon cloth electrodeposition polypyrrole supercapacitor negative electrode material |
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