CN106128790A - A kind of preparation method of Graphene electrode material for super capacitor - Google Patents
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- CN106128790A CN106128790A CN201610815461.3A CN201610815461A CN106128790A CN 106128790 A CN106128790 A CN 106128790A CN 201610815461 A CN201610815461 A CN 201610815461A CN 106128790 A CN106128790 A CN 106128790A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 81
- 239000007772 electrode material Substances 0.000 title claims abstract description 36
- 239000003990 capacitor Substances 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052737 gold Inorganic materials 0.000 claims abstract description 40
- 239000010931 gold Substances 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 32
- 238000002484 cyclic voltammetry Methods 0.000 claims abstract description 15
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 13
- 239000010439 graphite Substances 0.000 claims abstract description 13
- -1 graphite alkene Chemical class 0.000 claims abstract description 11
- 230000008021 deposition Effects 0.000 claims abstract description 5
- 238000005137 deposition process Methods 0.000 claims abstract description 3
- 239000002096 quantum dot Substances 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 7
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 5
- ZZZCUOFIHGPKAK-UHFFFAOYSA-N D-erythro-ascorbic acid Natural products OCC1OC(=O)C(O)=C1O ZZZCUOFIHGPKAK-UHFFFAOYSA-N 0.000 claims description 3
- 229930003268 Vitamin C Natural products 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 235000019154 vitamin C Nutrition 0.000 claims description 3
- 239000011718 vitamin C Substances 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims description 2
- 239000008151 electrolyte solution Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000002131 composite material Substances 0.000 description 22
- 238000010276 construction Methods 0.000 description 12
- 239000010409 thin film Substances 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000007769 metal material Substances 0.000 description 9
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 8
- 239000003792 electrolyte Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000007832 Na2SO4 Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical class Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 4
- 229910052697 platinum Inorganic materials 0.000 description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002079 cooperative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004832 voltammetry Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Nanotechnology (AREA)
- Physics & Mathematics (AREA)
- Composite Materials (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses the preparation method of a kind of Graphene electrode material for super capacitor, at nano-porous gold film surface deposited graphite alkene material, described deposition process uses electrochemical cyclic voltammetry, the concentration of described grapheme material is 0.02g/L 0.5g/L, during using electrochemical cyclic voltammetry deposited graphite alkene material, deposition window is 0 2V voltage, cycle-index 50 600 times, sweep speed 10 200mVs‑1.The electrode material for super capacitor of the present invention has high specific capacitance and good structural stability, cyclical stability.It is up to 864 F/g than electric capacity, circulates the ratio electric capacity still keeping 90% for 2000 times.It is applicable to the power supply occasion of high stability, high power density.
Description
Technical field
The invention belongs to materialogy field, relate to a kind of ultracapacitor, specifically a kind of electrode of super capacitor
The preparation method of material.
Background technology
Ultracapacitor is one of electrochemical energy storage technology of most application prospect.At present, the research weight of ultracapacitor
Point is to improve energy density and power density, and development has the electrode material of high-specific surface area, high conductivity and structural stability
Material.Comparing traditional Carbon Materials, Graphene has the highest electric conductivity, great specific surface area and substantial amounts of interlayer structure,
Lamella both sides all can be enriched with electric charge and form the diffusion of electric double layer and beneficially electrolyte, are preferable electrode of super capacitor materials
Material.The Graphene ultracapacitor prepared with Graphene has the features such as high-power, fast charging and discharging and cyclical stability are strong.
Although separately as electrode material for super capacitor, but can there is a techniques below difficult problem in Graphene: (1) its theoretical specific capacity is only
There are 329 F/g, limit the large-scale application of this material；(2) in graphene-based electrode production process, stacking it is susceptible to existing
As, affect grapheme material dispersibility in the electrolyte and surface wettability, cause grapheme material specific surface area and from
Electron conductivity declines.Therefore, effectively minimizing graphene sheet layer is assembled and stacking is to build newly to obtain good volumetric capacitance
The key of the graphene-based ultracapacitor of type.
For super capacitor material, vital characteristic is specific surface area and electric conductivity.Nano-porous gold has double
The features such as continuous print internal structure, high-specific surface area and good electric conductivity, have the physics of uniqueness, chemical property, are good
Support materials.By controlling size and the distribution of nano aperture, can further improve specific surface area.
Summary of the invention
For above-mentioned technical problem of the prior art, the invention provides a kind of Graphene electrode material for super capacitor
Preparation method, the preparation method of described this Graphene electrode material for super capacitor to solve of the prior art super
Capacitor electrode material is prone to the technical problem stacked, electric conductivity is not good enough.
The invention provides the preparation method of a kind of electrode material for super capacitor, deposit at nano-porous gold film surface
Grapheme material, described deposition process uses electrochemical cyclic voltammetry, and the concentration of described grapheme material is 0.02g/
L-0.5g/L, during using electrochemical cyclic voltammetry deposited graphite alkene material, deposition window is 0-2V voltage, circulation
Number of times 50-600 time, sweep speed 10-200mVs-1。
Further, described grapheme material is selected from graphene oxide, graphene quantum dot, nitrogen-doped graphene or nitrogen
Doped graphene quantum dot.
Further, Graphene or nitrogen-doped graphene are monolayer or multilayer oxygen functionalized graphene；Graphene quantum dot
Or nitrogen-doped graphene quantum dot granular size is 2-10nm.
Further, also including a process that electrode material for super capacitor carries out heat treatment, heat treatment temperature is
100-500oC, heat treatment time 20-120 minute.
Further, during using electrochemical cyclic voltammetry deposited graphite alkene material, in electrolyte solution
Adding dispersant, the mass percent concentration of described dispersant is 0.05%-1%.
Further, described dispersant is Polyethylene Glycol, vitamin C or citric acid.
The nano-porous gold of the present invention has three-dimensional porous structure, and the capillarity in bending hole wall and hole can reduce graphite
The gathering of alkene material and stacking.Using graphene oxide and graphene quantum dot is parent material, utilizes the cyclic voltammetry can be real
Existing single-layer graphene or the deposition of individual particle graphene quantum dot.Form the combination electrode material of monomolecular dispersion.
The nano-porous gold of the present invention has good electric conductivity, is characterized with three-dimensional porous structure, can improve specific surface
Long-pending.Grapheme material is deposited on nanoporous gold surface, still retains the three-dimensional continuous aperture gap structure of nano-porous gold, loose structure
Allow electrolyte ion that quickly diffusion and transfer occur in composite construction, thus carry out reversible absorption in electrode material surface
With desorbing, and then increase substantially ratio electric capacity and the charge-discharge velocity of electrode material.
The present invention controls grapheme material sinking on NPG thin film by controlling cycle-index, cycle rate and voltage
Accumulated amount and distribution.The graphene/nanometer porous gold composite construction electrode material for super capacitor of above-mentioned gained is good owing to having
Energy storage capability, high specific capacitance and good cyclical stability, therefore can be as efficient, the combination electrode material of lightweight.
The electrode material for super capacitor of the present invention, due to load grapheme material, utilizes fine particle interphase interaction
Power completes interface diffusion and combines so that it is have good structural stability.Simultaneously because between nano-porous gold and Graphene
Cooperative effect make composite electrode have the ratio electric capacity bigger than simple Graphene and nano-porous gold.
The present invention compares with prior art, and its technological progress is significant.Electrode of super capacitor prepared by the present invention
Material has high specific capacitance and good structural stability, cyclical stability.It is up to 864 F/g than electric capacity, circulates 2000 times
Still keep the ratio electric capacity of 90%.It is applicable to the power supply occasion of high stability, high power density.The present invention is at nanoporous golden watch
Face deposited graphite alkene material, it is achieved that the ion migration resistance that porosity is high, effective ratio area is big and low, solves Graphene
A base electrode material technology difficult problem.And the method technique of the present invention is simple, structure-controllable, environmental protection.
Accompanying drawing explanation
Fig. 1 is the TEM figure of the graphene quantum dot prepared by embodiment 1/nanoporous metal/composite material.
Fig. 2 is that embodiment 1 gained graphene quantum dot/nano-porous gold combination electrode material is at 0.5 M Na2SO4Solution
In cyclic voltammetry curve.
Fig. 3 is the TEM figure of the graphene oxide prepared by embodiment 2/nanoporous metal/composite material.
Fig. 4 is that embodiment 2 gained graphene oxide/nano-porous gold combination electrode material is at 0.5 M Na2SO4In solution
Cyclic voltammetry curve.
Fig. 5 is the TEM figure of embodiment 3 gained nitrogen-doped graphene quantum dot/nano-porous gold sandwich.
Fig. 6 is the composition measurement of embodiment 3 gained nitrogen-doped graphene quantum dot/nano-porous gold sandwich
EDX schemes.
Detailed description of the invention
Below by specific embodiment and combine accompanying drawing the present invention is expanded on further, elaboration below is merely to explain
Advantages of the present invention and technical scheme, do not limit the invention.
Embodiment 1
Graphene quantum dot/nano-porous gold composite construction electrode material for super capacitor, its method system as follows
For forming:
(1) take nanoporous gold thin film, clean twice with deionized water, take out with copper sheet.
(2) being placed in graphene quantum dot aqueous solution by NPG thin film, concentration is 0.02g/L, adds mass concentration and is
0.05%PEG.Using three-electrode system, utilize cyclic voltammetry deposited graphite alkene quantum dot, voltage window is 0-1V voltage, follows
Ring number of times 50 times, sweep speed 20mVs-1.Obtain graphene quantum dot/nano-porous gold composite construction electrode of super capacitor material
Material.
Use transmission electron microscope that above-mentioned graphene quantum dot/nanoporous metal/composite material is tested, see attached
Fig. 1.It will be seen from figure 1 that graphene quantum dot individual particle spherical in shape is distributed on nano-porous gold hole wall, granular size is 3-
8nm.Nanoporous gold thin film porous is evenly distributed, and still remains with three-dimensional continuous aperture gap structure after load graphene quantum dot.
Graphene quantum dot/nanoporous the metal/composite material of above-mentioned gained is carried out capacitive property test, with Graphene
Quantum dot/nano-porous gold is working electrode, with saturated calomel electrode as reference electrode, with platinized platinum for electrode, with 0.5M's
Na2SO4Solution is electrolyte, surveys capacitance curve result as shown in Figure 2.823 F/g are reached than electric capacity.Power density reaches 228 kW/
kg.More than 90% is still kept than electric capacity after circulating 3000 times.
Embodiment 2
Graphene oxide/nano-porous gold composite construction electrode material for super capacitor, prepared by its method as follows
Form:
(1) take nanoporous gold thin film, clean twice with deionized water, take out with copper sheet.
(2) being placed in graphene oxide water solution by NPG thin film, concentration is 0.5g/L.Using three-electrode system, utilization follows
Ring voltammetry deposited oxide grapheme material, voltage window is 0-2V voltage, cycle-index 500 times, sweep speed 200mVs-1。
Obtain graphene oxide/nano-porous gold composite construction electrode material for super capacitor.
(3) graphene oxide prepared by/nano-porous gold composite construction electrode material for super capacitor is 500oC, heat
Process 120 minutes.
Use transmission electron microscope that above-mentioned graphene oxide/nanoporous metal/composite material is tested, see accompanying drawing
3.From figure 3, it can be seen that Graphene is lamellar structure is deposited in nanoporous gold surface.The distribution of nanoporous gold thin film porous is all
Even, still remain with three-dimensional continuous aperture gap structure after load graphene oxide.
Graphene oxide/nanoporous the metal/composite material of above-mentioned gained is carried out capacitive property test, with graphite oxide
Alkene/nano-porous gold is working electrode, with saturated calomel electrode as reference electrode, with platinized platinum for electrode, with the Na of 0.5M2SO4
Solution is electrolyte, and the cyclic voltammetry under this three-electrode system surveys capacitance curve result as shown in Figure 4.Reach than electric capacity
423 F/g.Power density reaches 59 kW/kg.More than 90% is still kept than electric capacity after circulating 4000 times.
Embodiment 3
Nitrogen-doped graphene quantum dot/nano-porous gold composite construction electrode material for super capacitor, it is as follows
Method is prepared from:
(1) take nanoporous gold thin film, clean twice with deionized water, take out with copper sheet.
(2) being placed in by NPG thin film in nitrogen-doped graphene quantum dot aqueous solution, concentration is 0.1g/L, adds mass concentration
It it is 0.05% vitamin C.Using three-electrode system, utilize cyclic voltammetry deposited graphite alkene quantum dot, voltage window is 0-1.6V
Voltage, cycle-index 200 encloses, sweep speed 100mVs-1.Obtain nitrogen-doped graphene quantum dot/nano-porous gold composite construction
Electrode material for super capacitor.
Use transmission electron microscope that above-mentioned nitrogen-doped graphene quantum dot/nanoporous metal/composite material is surveyed
Examination, is shown in accompanying drawing 5.From fig. 5, it can be seen that nitrogen-doped graphene quantum dot individual particle spherical in shape is distributed in nano-porous gold hole wall
On, granular size is 4-9nm.Nanoporous gold thin film porous is evenly distributed, and still retains after load nitrogen-doped graphene quantum dot
There is three-dimensional continuous aperture gap structure.Nitrogen-doped graphene quantum dot/nano-porous gold sample surfaces EDX composition measurement result is shown in accompanying drawing
6.Wherein, doping N content is 2.6%.
Nitrogen-doped graphene quantum dot/nanoporous the metal/composite material of above-mentioned gained is carried out capacitive property test, with
Nitrogen-doped graphene quantum dot/nano-porous gold is working electrode, with saturated calomel electrode as reference electrode, with platinized platinum for electricity
Pole, with the Na of 0.5M2SO4Solution is electrolyte, and the ratio electric capacity recorded reaches 864 F/g.Power density reaches 120 kW/kg.Circulation
More than 90% is still kept than electric capacity after 2000 times.
Embodiment 4
Nitrogen-doped graphene/nano-porous gold composite construction electrode material for super capacitor, its method system as follows
For forming:
(1) take nanoporous gold thin film, clean twice with deionized water, take out with copper sheet.
(2) being placed in nitrogen-doped graphene aqueous solution by NPG thin film, concentration is 0.3g/L.Use three-electrode system, utilize
Cyclic voltammetry deposition nitrogen-doped graphene, voltage window is 0-1V voltage, cycle-index 600 times, sweep speed 50mVs-1.I.e.
Obtain nitrogen-doped graphene/nano-porous gold composite construction electrode material for super capacitor.
(3) nitrogen-doped graphene prepared by/nano-porous gold composite construction electrode material for super capacitor is 200oC,
Heat treatment 30 minutes.
Nitrogen-doped graphene/nanoporous the metal/composite material of above-mentioned gained is carried out capacitive property test, with N doping
Graphene/nanometer porous gold is working electrode, with saturated calomel electrode as reference electrode, with platinized platinum for electrode, with 0.5M's
Na2SO4Solution is electrolyte, and the ratio electric capacity recorded reaches 514 F/g.Power density reaches 71 kW/kg.Than electricity after circulating 2000 times
Hold and still keep more than 90%.
Foregoing is only the basic explanation under present inventive concept, and according to technical scheme made any etc.
Effect conversion, all should belong to protection scope of the present invention.
Claims (6)
1. the preparation method of a Graphene electrode material for super capacitor, it is characterised in that: at nano-porous gold film surface
Deposited graphite alkene material, described deposition process uses electrochemical cyclic voltammetry, and the concentration of described grapheme material is
0.02g/L-0.5g/L, during using electrochemical cyclic voltammetry deposited graphite alkene material, deposition window is 0-2V electricity
Pressure, cycle-index 50-600 time, sweep speed 10-200mVs-1。
The preparation method of a kind of Graphene electrode material for super capacitor the most as claimed in claim 1, it is characterised in that: described
Grapheme material is selected from graphene oxide, graphene quantum dot, nitrogen-doped graphene or nitrogen-doped graphene quantum dot.
The preparation method of a kind of Graphene electrode material for super capacitor the most as claimed in claim 2, it is characterised in that: graphite
Alkene or nitrogen-doped graphene are monolayer or multilayer oxygen functionalized graphene；Graphene quantum dot or nitrogen-doped graphene quantum dot
Grain size is 2-10nm.
The preparation method of a kind of Graphene electrode material for super capacitor the most as claimed in claim 1, it is characterised in that: also wrap
Including a process that electrode material for super capacitor carries out heat treatment, heat treatment temperature is 100-500oC, heat treatment time
20-120 minute.
The preparation method of a kind of Graphene electrode material for super capacitor the most as claimed in claim 1, it is characterised in that: adopting
During electrochemical cyclic voltammetry deposited graphite alkene material, electrolyte solution adds dispersant, described dispersion
The mass percent concentration of agent is 0.05%-1%.
The preparation method of a kind of Graphene electrode material for super capacitor the most as claimed in claim 5, it is characterised in that: described
Dispersant be Polyethylene Glycol, vitamin C or citric acid.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108364800A (en) * | 2018-01-22 | 2018-08-03 | 上海理工大学 | A kind of electrode material for super capacitor and preparation method thereof of nitrogen-doped graphene quantum dot/graphene |
| CN110415989A (en) * | 2019-08-07 | 2019-11-05 | 哈尔滨师范大学 | A kind of method that electrodeposition process prepares the super capacitor material of cobaltous selenide |
| CN111261418A (en) * | 2020-01-21 | 2020-06-09 | 江苏大学 | Method for preparing high-purity graphene film, electrode and capacitor |
| CN113643905A (en) * | 2021-08-23 | 2021-11-12 | 武夷学院 | Preparation method and application of graphene grafted polymer electrode material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108364800A (en) * | 2018-01-22 | 2018-08-03 | 上海理工大学 | A kind of electrode material for super capacitor and preparation method thereof of nitrogen-doped graphene quantum dot/graphene |
| CN110415989A (en) * | 2019-08-07 | 2019-11-05 | 哈尔滨师范大学 | A kind of method that electrodeposition process prepares the super capacitor material of cobaltous selenide |
| CN111261418A (en) * | 2020-01-21 | 2020-06-09 | 江苏大学 | Method for preparing high-purity graphene film, electrode and capacitor |
| CN113643905A (en) * | 2021-08-23 | 2021-11-12 | 武夷学院 | Preparation method and application of graphene grafted polymer electrode material |
| CN113643905B (en) * | 2021-08-23 | 2022-11-22 | 武夷学院 | Preparation method and application of nitrogen-doped graphene oxide grafted polymer electrode material |
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