CN104599860A - Method for assembling capacitor with graphene nanosheets - Google Patents
Method for assembling capacitor with graphene nanosheets Download PDFInfo
- Publication number
- CN104599860A CN104599860A CN201310525306.4A CN201310525306A CN104599860A CN 104599860 A CN104599860 A CN 104599860A CN 201310525306 A CN201310525306 A CN 201310525306A CN 104599860 A CN104599860 A CN 104599860A
- Authority
- CN
- China
- Prior art keywords
- capacitor
- graphite oxide
- nanometer sheet
- graphene
- graphene nanometer
- 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.)
- Pending
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000003990 capacitor Substances 0.000 title claims abstract description 24
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000002135 nanosheet Substances 0.000 title abstract 3
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 14
- 239000010439 graphite Substances 0.000 claims abstract description 14
- 239000000839 emulsion Substances 0.000 claims abstract description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000003792 electrolyte Substances 0.000 claims abstract description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000012895 dilution Substances 0.000 claims description 3
- 238000010790 dilution Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000005457 ice water Substances 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 239000012286 potassium permanganate Substances 0.000 claims description 3
- 235000010344 sodium nitrate Nutrition 0.000 claims description 3
- 235000011149 sulphuric acid Nutrition 0.000 claims description 3
- 239000000203 mixture Substances 0.000 abstract description 4
- 239000011230 binding agent Substances 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract 2
- 238000001035 drying Methods 0.000 abstract 1
- 238000004299 exfoliation Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002360 preparation method 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
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Carbon And Carbon Compounds (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention discloses a method for assembling a capacitor with graphene nanosheets. The method comprises the following steps: flake graphite is oxidized and dried; graphene nanosheets are prepared through thermal exfoliation under the conditions of low temperature and atmospheric pressure; and grapheme, conductive carbon black and PTFE emulsion with a mass fraction of 50% are mixed at a mass ratio of 80: 8: 5, absolute ethyl alcohol is added to the mixture and the mixture is stirred, the mixture is heated to break the emulsion, drying is carried out at the temperature of 50 DEG C to prepare electrode sheets, and the dried electrode sheets are assembled into a capacitor by adopting a special diaphragm for capacitors and using 6mol/L KOH solution as electrolyte. The ratio of grapheme, conductive carbon black and binder is reasonable, and the prepared capacitor has good performance and large specific capacitance.
Description
Technical field
The invention belongs to graphite applied technical field, be specifically related to the method for a kind of graphene nanometer sheet assembling capacitor.
Background technology
Carbonaceous material has that specific area is high, conductivity is good, the advantage that chemical stability is good and cheap in the electrolytic solution.The Graphene with high-ratio surface sum good electric conductivity will be desirable electrode material for super capacitor, ultracapacitor power and energy can be improved, but technological requirement that prior art prepares graphene nanometer sheet is high, energy consumption is large, Graphene is adopted to prepare capacitor, need strict Controlling Technology parameter, otherwise the chemical property of capacitor can be affected.
Summary of the invention
In order to overcome the above-mentioned technical problem that prior art field exists, the object of the invention is to, provide a kind of graphene nanometer sheet to assemble the method for capacitor, method is simple, and rational technology, the capacitor of preparation has good chemical property.
The method of graphene nanometer sheet assembling capacitor provided by the invention, comprise the following steps: comprise the following steps: (1) prepares graphite oxide: graphite powder and H2SO4, NaNO3 mixing and stirring, KMnO4 is added in ice-water bath, afterwards mixed solution is placed in the water-bath of 40 DEG C, stirring reaction 15 min, add deionized water and continue stirring 30 min, adding temperature is afterwards after the deionized water dilution of 60 DEG C, add the H2O2 solution that mass fraction is 30% again, filtration after reaction, cleaning, vacuumize obtain graphite oxide; (2) prepare graphene nanometer sheet: obtained graphite oxide is placed in the program control type air atmosphere Muffle furnace being heated to 200-300 DEG C in advance, place about 10 min, graphite oxide Low Temperature Thermal is peeled off and is obtained graphene nanometer sheet; (3) by Graphene, conductive black and mass fraction be 50% PTFE emulsion with 80: 8: 5 mass ratio mixing, add absolute ethyl alcohol to stir evenly, heating, breakdown of emulsion, dry at 50 DEG C of temperature, make electrode slice, the KOH solution of employing capacitor dedicated diaphragm, 6 mol/L is electrolyte, and dried electrode slice is assembled into capacitor.
The method of graphene nanometer sheet provided by the invention assembling capacitor, its beneficial effect is, the reasonable mixture ratio of Graphene, conductive black and binding agent, and obtained capacitor performance is good and have larger ratio capacitance.
Embodiment
Below in conjunction with an embodiment, the method for graphene nanometer sheet assembling capacitor provided by the invention is described in detail.
Embodiment
The method of the graphene nanometer sheet assembling capacitor of the present embodiment, comprise the following steps: (1) prepares graphite oxide: graphite powder and H2SO4, NaNO3 mixing and stirring, KMnO4 is added in ice-water bath, afterwards mixed solution is placed in the water-bath of 40 DEG C, stirring reaction 15 min, add deionized water and continue stirring 30 min, adding temperature is afterwards after the deionized water dilution of 60 DEG C, add the H2O2 solution that mass fraction is 30% again, filtration after reaction, cleaning, vacuumize obtain graphite oxide; (2) prepare graphene nanometer sheet: obtained graphite oxide is placed in the program control type air atmosphere Muffle furnace being heated to 250 DEG C in advance, place about 10 min, graphite oxide Low Temperature Thermal is peeled off and is obtained graphene nanometer sheet; (3) by Graphene, conductive black and mass fraction be 50% PTFE emulsion with 80: 8: 5 mass ratio mixing, add absolute ethyl alcohol to stir evenly, heating, breakdown of emulsion, dry at 50 DEG C of temperature, make electrode slice, the KOH solution of employing capacitor dedicated diaphragm, 6 mol/L is electrolyte, and dried electrode slice is assembled into capacitor.
Claims (1)
1. the method for a graphene nanometer sheet assembling capacitor, it is characterized in that: comprise the following steps: (1) prepares graphite oxide: graphite powder and H2SO4, NaNO3 mixing and stirring, KMnO4 is added in ice-water bath, afterwards mixed solution is placed in the water-bath of 40 DEG C, stirring reaction 15 min, add deionized water and continue stirring 30 min, adding temperature is afterwards after the deionized water dilution of 60 DEG C, add the H2O2 solution that mass fraction is 30% again, filtration after reaction, cleaning, vacuumize obtain graphite oxide; (2) prepare graphene nanometer sheet: obtained graphite oxide is placed in the program control type air atmosphere Muffle furnace being heated to 200-300 DEG C in advance, place about 10 min, graphite oxide Low Temperature Thermal is peeled off and is obtained graphene nanometer sheet; (3) by Graphene, conductive black and mass fraction be 50% PTFE emulsion with 80: 8: 5 mass ratio mixing, add absolute ethyl alcohol to stir evenly, heating, breakdown of emulsion, dry at 50 DEG C of temperature, make electrode slice, the KOH solution of employing capacitor dedicated diaphragm, 6 mol/L is electrolyte, and dried electrode slice is assembled into capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310525306.4A CN104599860A (en) | 2013-10-31 | 2013-10-31 | Method for assembling capacitor with graphene nanosheets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310525306.4A CN104599860A (en) | 2013-10-31 | 2013-10-31 | Method for assembling capacitor with graphene nanosheets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104599860A true CN104599860A (en) | 2015-05-06 |
Family
ID=53125567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310525306.4A Pending CN104599860A (en) | 2013-10-31 | 2013-10-31 | Method for assembling capacitor with graphene nanosheets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104599860A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108878172A (en) * | 2017-05-10 | 2018-11-23 | 东莞东阳光科研发有限公司 | A kind of preparation method of electrode for super capacitor |
| CN109192541A (en) * | 2018-09-21 | 2019-01-11 | 佛山皖和新能源科技有限公司 | A kind of preparation method of the dedicated doping vario-property graphene oxide of supercapacitor |
| CN109351333A (en) * | 2018-12-22 | 2019-02-19 | 西安科技大学 | A kind of preparation method of the semi-coke base adsorbent for separation of methane/nitrogen |
-
2013
- 2013-10-31 CN CN201310525306.4A patent/CN104599860A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108878172A (en) * | 2017-05-10 | 2018-11-23 | 东莞东阳光科研发有限公司 | A kind of preparation method of electrode for super capacitor |
| CN108878172B (en) * | 2017-05-10 | 2021-06-08 | 东莞东阳光科研发有限公司 | Preparation method of electrode for supercapacitor |
| CN109192541A (en) * | 2018-09-21 | 2019-01-11 | 佛山皖和新能源科技有限公司 | A kind of preparation method of the dedicated doping vario-property graphene oxide of supercapacitor |
| CN109351333A (en) * | 2018-12-22 | 2019-02-19 | 西安科技大学 | A kind of preparation method of the semi-coke base adsorbent for separation of methane/nitrogen |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103219169B (en) | A kind of preparation method of electrode material for super capacitor carbon cladding nickel oxide NiO/C | |
| CN106783197B (en) | A kind of ZIF-8 pyrolysis porous carbon-graphene composite material and its preparation method and application | |
| Wang et al. | Mn2O3/carbon aerogel microbead composites synthesized by in situ coating method for supercapacitors | |
| CN103594246A (en) | Preparation method for electrode material of porous NiCo2O4 nanowire array supercapacitor | |
| CN103407991B (en) | Preparation method of nickel/nickel oxide-decorated nitrogen-doped graphene material | |
| CN105314629A (en) | Method for directly preparing co-doping three-dimensional graphene electrode material through biomass carbon sources | |
| CN103594253A (en) | Method for preparing porous NiCo2O4/MnO2 nuclear shell nanowire array supercapacitor electrode material | |
| CN102915844B (en) | A kind of method and application thereof preparing the hierarchical composite material of carbon plate/manganese dioxide nano-plates | |
| CN103700513B (en) | A kind of graphene paper and its preparation method and application | |
| CN102867654A (en) | Graphitized activated carbon electrode material for supercapacitor and preparation method thereof | |
| Zhang et al. | Porous carbons prepared from deoiled asphalt and their electrochemical properties for supercapacitors | |
| CN104538646A (en) | Method for manufacturing air electrode of aluminum-air cell | |
| Liu et al. | Synthesis of MnO2-graphene composites with enhanced supercapacitive performance via pulse electrodeposition under supergravity field | |
| CN103723723B (en) | A kind of preparation method of Graphene modified activated carbon | |
| CN103617893A (en) | Supercapacitor electrode material molybdenum sulfide-multiwalled carbon nanotube and preparation method thereof | |
| CN106158405A (en) | A kind of nickel hydroxide/graphene nanocomposite material and preparation method thereof, electrode of super capacitor and ultracapacitor | |
| CN103606467A (en) | Preparation method for NiCo2O4/MnO2/AC water system asymmetric super capacitor | |
| CN106206051B (en) | A kind of graphene modified activated carbon and its application | |
| CN104616914A (en) | Preparation method for 3D coralloid grapheme/NiCo2O4 composite materials | |
| CN103450463A (en) | Preparation method of poly(3,4-ethylenedioxythiophene)/reduced graphene oxide/Co3O4 (PEDOT-RGO-Co3O4) nano wave-absorbing material | |
| CN104599860A (en) | Method for assembling capacitor with graphene nanosheets | |
| CN105374574B (en) | A kind of preparation method and applications of cobalt hydroxide/graphene flexible electrode material | |
| Liu et al. | Bi2O3 with reduced graphene oxide composite as a supercapacitor electrode | |
| CN105321726A (en) | High-magnification active carbon and active graphene composite electrode material and preparation method thereof | |
| CN107799204A (en) | A kind of touch-screen graphene conductive film and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150506 |