AU2015101548A4 - Preparation method of super capacitor - Google Patents
Preparation method of super capacitor Download PDFInfo
- Publication number
- AU2015101548A4 AU2015101548A4 AU2015101548A AU2015101548A AU2015101548A4 AU 2015101548 A4 AU2015101548 A4 AU 2015101548A4 AU 2015101548 A AU2015101548 A AU 2015101548A AU 2015101548 A AU2015101548 A AU 2015101548A AU 2015101548 A4 AU2015101548 A4 AU 2015101548A4
- Authority
- AU
- Australia
- Prior art keywords
- alginate
- super capacitor
- porous carbon
- film
- preparation
- 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.)
- Expired
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 53
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 53
- FHVDTGUDJYJELY-UHFFFAOYSA-N 6-{[2-carboxy-4,5-dihydroxy-6-(phosphanyloxy)oxan-3-yl]oxy}-4,5-dihydroxy-3-phosphanyloxane-2-carboxylic acid Chemical compound O1C(C(O)=O)C(P)C(O)C(O)C1OC1C(C(O)=O)OC(OP)C(O)C1O FHVDTGUDJYJELY-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229940072056 alginate Drugs 0.000 claims abstract description 17
- 235000010443 alginic acid Nutrition 0.000 claims abstract description 17
- 229920000615 alginic acid Polymers 0.000 claims abstract description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical group CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 14
- 235000010413 sodium alginate Nutrition 0.000 claims description 14
- 239000000661 sodium alginate Substances 0.000 claims description 14
- 229940005550 sodium alginate Drugs 0.000 claims description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 12
- 235000010410 calcium alginate Nutrition 0.000 claims description 10
- 239000000648 calcium alginate Substances 0.000 claims description 10
- 229960002681 calcium alginate Drugs 0.000 claims description 10
- OKHHGHGGPDJQHR-YMOPUZKJSA-L calcium;(2s,3s,4s,5s,6r)-6-[(2r,3s,4r,5s,6r)-2-carboxy-6-[(2r,3s,4r,5s,6r)-2-carboxylato-4,5,6-trihydroxyoxan-3-yl]oxy-4,5-dihydroxyoxan-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylate Chemical compound [Ca+2].O[C@@H]1[C@H](O)[C@H](O)O[C@@H](C([O-])=O)[C@H]1O[C@H]1[C@@H](O)[C@@H](O)[C@H](O[C@H]2[C@H]([C@@H](O)[C@H](O)[C@H](O2)C([O-])=O)O)[C@H](C(O)=O)O1 OKHHGHGGPDJQHR-YMOPUZKJSA-L 0.000 claims description 10
- -1 polypropylene Polymers 0.000 claims description 10
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 238000004080 punching Methods 0.000 claims description 8
- 235000010408 potassium alginate Nutrition 0.000 claims description 7
- 239000000737 potassium alginate Substances 0.000 claims description 7
- MZYRDLHIWXQJCQ-YZOKENDUSA-L potassium alginate Chemical compound [K+].[K+].O1[C@@H](C([O-])=O)[C@@H](OC)[C@H](O)[C@H](O)[C@@H]1O[C@@H]1[C@@H](C([O-])=O)O[C@@H](O)[C@@H](O)[C@H]1O MZYRDLHIWXQJCQ-YZOKENDUSA-L 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 239000003792 electrolyte Substances 0.000 claims description 6
- 239000000839 emulsion Substances 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000002149 hierarchical pore Substances 0.000 abstract description 3
- 238000009776 industrial production Methods 0.000 abstract description 3
- 230000014759 maintenance of location Effects 0.000 description 6
- 230000004913 activation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000007772 electrode material Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000002336 sorption--desorption measurement Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241001474374 Blennius Species 0.000 description 1
- 238000003917 TEM image Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000007833 carbon precursor Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 238000010187 selection method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- H01G11/38—Carbon pastes or blends; Binders or additives therein
-
- 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
-
- 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
Abstract The present invention relates to the technical field of super capacitors, in particular to a preparation method of a super capacitor. In the present invention, porous carbon is prepared by using alginate and then applied in a super capacitor. The method is simple, free of any auxiliary reagent, small in environmental pollution and easy for industrial production. Meanwhile, the produced porous carbon has a high specific surface area and a well-developed pore structure, with the pore channel being of a hierarchical pore channel structure, and shows a high specific capacitance.
Description
PREPARATION METHOD OF SUPER CAPACITOR Technical Field of the Invention [1] The present invention relates to the technical field of super capacitors, in particular to a preparation method of a super capacitor. Background of the Invention [2] Due to its similar properties to active carbon, for example, a high specific surface area and a well-developed pore structure, porous carbon has been widely used as the super capacitor electrode material. The selection and preparation methods of precursors are very important to the pore channel structure of the porous carbon and to the electrochemical performance of the porous carbon as the super capacitor electrode material. At present, the commercial porous carbon is mainly classified into the following three categories according to different raw materials: petroleum-based, coal-based and biomass-based porous carbon. The preparation methods mainly include physical activation, chemical activation and a template method. With the increasing depletion of non-renewable fossil fuels such as coal and petroleum and as a large amount of harmful gases generated during their combustion aggravate the environmental pollution, biomass as a sustainable carbon precursor becomes a new direction of developing novel and efficient super capacitor electrode material. Meanwhile, among the preparation methods, the physical activation, the chemical activation and the template method all require auxiliary reagents, resulting in the waste of energy sources and thus the high price of products. Summary of the Invention [3] To solve the above problems, an objective of the present invention is to provide a preparation method of a super capacitor. The method is simple, free 1 of any auxiliary reagent, small in environmental pollution and easy for industrial production. Meanwhile, the produced porous carbon has a high specific surface area and a well-developed pore structure, with the pore channel being of a hierarchical pore channel structure, and shows a high specific capacitance. [4] To achieve the inventive objective, the present invention employs the following technical solutions. [5] A preparation method of a super capacitor is provided, specifically including the following steps of: (1) uniformly mixing alginate-based porous carbon, conductive carbon black and binder at a mass ratio of 8: 1: 1 to obtain mixed liquor, then adding anhydrous alcohol dropwise into the mixed liquor, and ultrasonically oscillating for 1 h to obtain slurry; (2) molding the slurry by a film laminator to obtain a carbon film having a thickness of 60 pm, and punching the carbon film into a film having a diameter of 14 mm by a punching machine; (3) pressing, at 15 MPa, the film obtained in step (2) and nickel foam having a thickness of 14 mm into a circular electrode slice by a die by a sheet press; (4) drying the electrode slice obtained in step (3) in a vacuum oven at 120'C for 12h to obtain finished products of electrode slices; and (5) using two of the electrode slices obtained in step (4), which are equal in mass, as two electrodes, and assembling a super capacitor by using a polypropylene film as a diaphragm and 6M of KOH aqueous solution as electrolyte. [6] Preferably, the binder in step (1) is PTFE emulsion having a mass fraction of 10%. [7] Preferably, the alginate-based porous carbon in step (1) is prepared by the following steps of: placing alginate into a tubular furnace, heating up to 500-900'C at a rate of 1-10 C/min in the atmosphere of nitrogen, keeping this 2 temperature for 1-1Oh, and naturally cooling to the room temperature to obtain the alginate-based porous carbon having a high specific area. [8] Preferably, the alginate is sodium alginate, potassium alginate or calcium alginate. [9] Preferably, the alginate-based porous carbon in step (1) is prepared by the following steps of: placing alginate into a tubular furnace, heating up to 600-650'C at a rate of 2-4 C/min in the atmosphere of nitrogen, keeping this temperature for 2-2.5h, and naturally cooling to the room temperature to obtain the alginate-based porous carbon having a high specific area. [10]Compared with the prior art, the present invention has the following beneficial effects: 1) the raw materials used in the present invention are inexpensive and widely exist in seaweeds; 2) it is unnecessary to add any auxiliary reagent during the preparation of the porous carbon; 3) the preparation of the porous carbon is simple, controllable and easy for industrial production; and 4) the super capacitor assembled with the porous carbon has a high specific capacitance. Brief Description of the Drawings [11]Fig. 1 is a scanning electron microphotograph of the sodium alginate based porous carbon prepared in Embodiment 1; [12]Fig. 2 is a high-magnification transmission electron microphotograph of the sodium alginate based porous carbon prepared in Embodiment 1; [13]Fig. 3 is a N 2 adsorption/desorption curve of the sodium alginate based porous carbon prepared in Embodiment 1; [14]Fig. 4 is a pore size distribution diagram of the sodium alginate based porous carbon prepared in Embodiment 1; and 3 [15]Fig. 5 is a diagram showing rate capability and cycle performance of a super capacitor prepared in Embodiment 1. Detailed Description of the Invention [1 6]The technical solutions of the present invention will be further described as below by specific embodiments. [17]Unless otherwise specified, the raw materials used in the embodiments of the present invention all are commonly used in the art, and the methods used in the embodiments are conventional ones in the art. [18] Embodiment 1 [19]30g of commercial sodium alginate is put into a tubular furnace, then heated up to 800'C at a rate of 2 C/min in the atmosphere of nitrogen, kept at this temperature for 2h and naturally cooled to the room temperature to obtain sodium alginate based porous carbon. It is observed that, by a scanning electron microscope (referring to Fig. 1) and a transmission electron microscope (referring to Fig. 2), the sodium alginate based porous carbon has a hierarchical pore channel structure, i.e., a micropore-mesopore-macropore structure. The N 2 adsorption/desorption curve and pore size distribution diagram (referring to Fig. 3 and Fig. 4) of the sodium alginate based porous carbon indicate that it has a specific surface area of 1919 m 2 /g. [20]Then, the sodium alginate based porous carbon obtained in the above step is mixed with Carbot Vxc-72 and 10% of PTFE (polytetrafluoroethylene) emulsion at a mass ratio of 8: 1: 1, and the mixed liquor is added with anhydrous alcohol dropwise and then ultrasonically oscillated for 1 h to obtain slurry. The slurry is molded by a film laminator to obtain a carbon film having a uniform thickness of 60 pm. Subsequently, the carbon film is punched into a film having a diameter of 13 mm by a punching machine, and the film together with nickel foam having a thickness of 13 mm is then pressed into a circular electrode slice at 15 MPa by a die by a sheet press. Finally, the electrode slice 4 is dried in a vacuum oven at 120'C for 12h. [21]Two of the electrode slices obtained in the above step, which are equal in mass, are used as two electrodes, and then a R2430 super capacitor is assembled by using a polypropylene film as a diaphragm and 6M of KOH aqueous solution as electrolyte. The specific capacitance of the super capacitor at the current density of 0.05 A/g is 230 F/g, and the specific capacitance of the super capacitor at the current density of 40 A/g is 178.1 F/g (referring to Fig. 5). The capacity retention ratio of the super capacitor after 10000 times of cycles at the current density of 40 A/g is up to 99.7% (referring to Fig. 5). Embodiment 2 [22]The process of this embodiment is similar to that of Embodiment 1 except the following differences: the sodium alginate is heated up to 720'C instead of 800'C at a rate of 8 C/min instead of 2 C/min and kept at this temperature for 1h instead of 2h, and the specific surface area of the finally obtained sodium alginate based porous carbon is 2063 m 2 /g; the specific capacitance of the obtained super capacitor at the current density of 0.05 A/g is 241 F/g; the specific capacitance of the super capacitor at the current density of 40 A/g is 175.2 F/g; and, the capacity retention ratio of the super capacitor is up to 99.3% after 5000 times of cycles at the current density of 40 A/g. Embodiment 3 [23]27g of commercial sodium alginate is put into a tubular furnace, then heated up to 850'C at a rate of 5 C/min in the atmosphere of nitrogen, kept for 4h at this temperature and naturally cooled to the room temperature to obtain potassium alginate based porous carbon. The specific surface area of the potassium alginate based porous carbon is 1973 m 2 /g. [24]Then, the potassium alginate based porous carbon obtained in the above 5 step is mixed with Carbot Vxc-72 and 10% of PTFE (polytetrafluoroethylene) emulsion at a mass ratio of 8: 1: 1, and the mixed liquor is added with anhydrous alcohol dropwise and then ultrasonically oscillated for 1 h to obtain slurry. The slurry is molded by a film laminator to obtain a carbon film having a uniform thickness of 60 pm. Subsequently, the carbon film is punched into a film having a diameter of 13 mm by a punching machine, and the film together with nickel foam having a thickness of 13 mm is then pressed into a circular electrode slice at 15 MPa by a die by a sheet press. Finally, the electrode slice is dried in a vacuum oven at 120'C for 12h. [25]Two of the circular and dried electrode slices obtained in the above step, which are equal in mass, are used as two electrodes, and then a R2430 super capacitor is assembled by using a polypropylene film as a diaphragm and 6M of KOH aqueous solution as electrolyte. The specific capacitance of the super capacitor at the current density of 0.05 A/g is 235 F/g, and the specific capacitance of the super capacitor at the current density of 40 A/g is 173.5 F/g. The capacity retention ratio of the super capacitor after 10000 times of cycles at the current density of 40 A/g is up to 99.8%. Embodiment 4 [26]The process of this embodiment is similar to that of Embodiment 3 except the following differences: the potassium alginate is heated up to 550'C inseatd of 850'C at a rate of 1 C/min instead of 5 C/min and kept at this temperature for 10h instead of 4h, and the specific surface area of the finally obtained potassium alginate based porous carbon is 1804 m 2 /g; the specific capacitance of the obtained super capacitor at the current density of 0.05 A/g is 227 F/g; the specific capacitance of the super capacitor at the current density of 40 A/g is 167 F/g; and, the capacity retention ratio of the super capacitor is up to 98.4% after 10000 times of cycles at the current density of 40 A/g. 6 Embodiment 5 [27]50g of commercial calcium alginate is put into a tubular furnace, then heated up to 680'C at a rate of 6 C/min in the atmosphere of nitrogen, kept for 7h at this temperature and naturally cooled to the room temperature to obtain calcium alginate based porous carbon. The specific surface area of the calcium alginate based porous carbon is 1897 m 2 /g. [28]Then, the calcium alginate based porous carbon obtained in the above step is mixed with Carbot Vxc-72 and 10% of PTFE (polytetrafluoroethylene) emulsion at a mass ratio of 8: 1: 1, and the mixed liquor is added with anhydrous alcohol dropwise and then ultrasonically oscillated for 1 h to obtain slurry. The slurry is molded by a film laminator to obtain a carbon film having a uniform thickness of 60 pm. Subsequently, the carbon film is punched into a film having a diameter of 13 mm by a punching machine, and the film together with nickel foam having a thickness of 13 mm is then pressed into a circular electrode slice at 15 MPa by a die by a sheet press. Finally, the electrode slice is dried in a vacuum oven at 120'C for 12h. [29]Two of the circular and dried electrode slices obtained in the above step, which are equal in mass, are used as two electrodes, and then a R2430 super capacitor is assembled by using a polypropylene film as a diaphragm and 6M of KOH aqueous solution as electrolyte. The specific capacitance of the super capacitor at the current density of 0.05 A/g is 237 F/g, and the specific capacitance of the super capacitor at the current density of 40 A/g is 174.2 F/g. The capacity retention ratio of the super capacitor after 10000 times of cycles at the current density of 40 A/g is up to 98.9%. Embodiment 6 [30]43g of commercial calcium alginate is put into a tubular furnace, then heated up to 900C at a rate of 3 C/min in the atmosphere of nitrogen, kept 7 for 1 h at this temperature and naturally cooled to the room temperature to obtain calcium alginate based porous carbon. The specific surface area of the calcium alginate based porous carbon is 2198 m 2 /g. [31]Then, the calcium alginate based porous carbon obtained in the above step is mixed with Carbot Vxc-72 and 10% of PTFE (polytetrafluoroethylene) emulsion at a mass ratio of 8: 1: 1, and the mixed liquor is added with anhydrous alcohol dropwise and then ultrasonically oscillated for 1 h to obtain slurry. The slurry is molded by a film laminator to obtain a carbon film having a uniform thickness of 60 pm. Subsequently, the carbon film is punched into a film having a diameter of 13 mm by a punching machine, and the film together with nickel foam having a thickness of 13 mm is then pressed into a circular electrode slice at 15 MPa by a die by a sheet press. Finally, the electrode slice is dried in a vacuum oven at 120'C for 12h. [32]Two of the circular and dried electrode slices obtained in the above step, which are equal in mass, are used as two electrodes, and then a R2430 type super capacitor is assembled by using a polypropylene film as a diaphragm and 6M of KOH aqueous solution as electrolyte. The specific capacitance of the super capacitor at the current density of 0.05 A/g is 249 F/g, and the specific capacitance of the super capacitor at the current density of 40 A/g is 179.5 F/g. The capacity retention ratio of the super capacitor after 10000 times of cycles at the current density of 40 A/g is up to 99.9%. [33]It will be understood that the term "comprise" and any of its derivatives (eg comprises, comprising) as used in this specification is to be taken to be inclusive of features to which it refers, and is not meant to exclude the presence of any additional features unless otherwise stated or implied. [34]The reference to any prior art in this specification is not, and should not be taken as, an acknowledgement of any form of suggestion that such prior art forms part of the common general knowledge. [35]It will be appreciated by those skilled in the art that the invention is not 8 restricted in its use to the particular application described. Neither is the present invention restricted in its preferred embodiment with regard to the particular elements and/or features described or depicted herein. It will be appreciated that various modifications can be made without departing from the principles of the invention. Therefore, the invention should be understood to include all such modifications in its scope. 9
Claims (5)
1. A preparation method of a super capacitor, specifically comprising the following steps of: (1) uniformly mixing alginate-based porous carbon, conductive carbon black and binder at a mass ratio of 8: 1: 1 to obtain mixed liquor, then adding anhydrous alcohol dropwise into the mixed liquor, and ultrasonically oscillating for 1 h to obtain slurry; (2) molding the slurry by a film laminator to obtain a carbon film having a thickness of 60 u m, and punching the carbon film into a film having a diameter of 14 mm by a punching machine; (3) pressing, at 15 MPa, the film obtained in step (2) and nickel foam having a thickness of 14 mm into a circular electrode slice by a die by a sheet press; (4) drying the electrode slice obtained in step (3) in a vacuum oven at 120'C for 12h to obtain finished products of electrode slices; and (5) using two of the electrode slices obtained in step (4), which are equal in mass, as two electrodes, and assembling a super capacitor by using a polypropylene film as a diaphragm and 6M of KOH aqueous solution as electrolyte.
2. The preparation method of a super capacitor according to claim 1, characterized in that the binder in step (1) is PTFE emulsion having a mass fraction of 10%.
3. The preparation method of a super capacitor according to claim 1, characterized in that the alginate-based porous carbon in step (1) is prepared by the following steps of: placing alginate into a tubular furnace, heating up to
500-900'C at a rate of 1-10 C/min in the atmosphere of nitrogen, keeping this temperature for 1-10h, and naturally cooling to the room temperature to obtain the alginate-based porous carbon having a high specific area. 4. The preparation method of a super capacitor according to claim 3, 10 characterized in that the alginate is sodium alginate, potassium alginate or calcium alginate. 5. The preparation method of a super capacitor according to claim 3, characterized in that the alginate-based porous carbon in step (1) is prepared by the following steps of: placing alginate into a tubular furnace, heating up to
600-650'C at a rate of 2-4 C/min in the atmosphere of nitrogen, keeping this temperature for 2-2.5h, and naturally cooling to the room temperature to obtain the alginate-based porous carbon having a high specific area. 11
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNCN201510004209X | 2015-01-06 | ||
| CN201510004209.XA CN104795251A (en) | 2015-01-06 | 2015-01-06 | Method for preparing super capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2015101548A4 true AU2015101548A4 (en) | 2015-12-10 |
Family
ID=53559996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2015101548A Expired AU2015101548A4 (en) | 2015-01-06 | 2015-10-19 | Preparation method of super capacitor |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN104795251A (en) |
| AU (1) | AU2015101548A4 (en) |
| DE (1) | DE102015122923A1 (en) |
| WO (1) | WO2016110115A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795251A (en) * | 2015-01-06 | 2015-07-22 | 宁波南车新能源科技有限公司 | Method for preparing super capacitor |
| CN110858523B (en) * | 2018-08-22 | 2022-07-08 | 北京纳米能源与系统研究所 | Manufacturing method of super capacitor |
| CN110120304B (en) * | 2019-04-23 | 2021-11-30 | 宁波中车新能源科技有限公司 | Alginate-cyclodextrin composite porous carbon and application thereof in super capacitor |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307669C (en) * | 2001-11-02 | 2007-03-28 | 中国科学院上海冶金研究所 | Manufacture of high-voltage electrochemical capacitor |
| US20070148531A1 (en) * | 2005-12-22 | 2007-06-28 | Canon Kabushiki Kaisha | Catalyst electrode, production process thereof, and polymer electrolyte fuel cell |
| CN101905876A (en) * | 2009-06-02 | 2010-12-08 | 中国科学院化学研究所 | Porous carbon, and preparation method and applications thereof |
| CN103663448B (en) * | 2012-09-19 | 2017-08-01 | 天津普兰纳米科技有限公司 | Preparation method, gained carbon material and its application of carbon material |
| CN103482603A (en) * | 2013-09-12 | 2014-01-01 | 新疆医科大学第一附属医院 | Multi-layer orderly porous carbon material and preparing method thereof |
| CN103771408B (en) * | 2013-12-30 | 2015-10-28 | 上海交通大学 | Based on the preparation method of the activated carbon for super capacitors of marine alga |
| CN104201000B (en) * | 2014-08-21 | 2017-05-17 | 清华大学 | High-power lithium ion capacitor and manufacturing method thereof |
| CN104795251A (en) * | 2015-01-06 | 2015-07-22 | 宁波南车新能源科技有限公司 | Method for preparing super capacitor |
-
2015
- 2015-01-06 CN CN201510004209.XA patent/CN104795251A/en active Pending
- 2015-08-27 WO PCT/CN2015/088256 patent/WO2016110115A1/en active Application Filing
- 2015-10-19 AU AU2015101548A patent/AU2015101548A4/en not_active Expired
- 2015-12-29 DE DE102015122923.4A patent/DE102015122923A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102015122923A1 (en) | 2016-07-07 |
| WO2016110115A1 (en) | 2016-07-14 |
| CN104795251A (en) | 2015-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Yan et al. | Biomass‐derived activated carbon nanoarchitectonics with Hibiscus flowers for high‐performance supercapacitor electrode applications | |
| CN103787327B (en) | The ultracapacitor one-step preppn process of hollow sphere porous graphene | |
| AU2015101548A4 (en) | Preparation method of super capacitor | |
| CN103979530A (en) | Method for preparing porous carbon for electrochemical capacitor from egg white used as raw material | |
| CN104071768B (en) | Part graphitization porous carbon electrode material of aperture fractional distribution and preparation method thereof | |
| CN103183345A (en) | Method for preparation of nitrogen doped activated carbon from chlorine-containing organic polymer waste | |
| CN110526243A (en) | A kind of preparation method and applications of the biomass porous carbon of supercapacitor | |
| CN106629723A (en) | Biomass-based N, S and P-containing co-doped porous carbon and application thereof | |
| CN111017925A (en) | Preparation and application of novel porous carbon material with high energy storage performance | |
| CN111268675A (en) | Method for preparing nitrogen-phosphorus co-doped carbon material by taking durian peel as raw material | |
| CN108584944A (en) | A kind of preparation method of the ultracapacitor rich nitrogen grading porous carbon electrode material of high-specific surface area | |
| CN111785535B (en) | Preparation method of self-activated high-specific-capacitance carbon nanotube electrode | |
| CN104003371A (en) | Method for preparing porous carbon material used for super capacitor through using cashmere wool as raw material | |
| Yin et al. | Synthesis of honeycomb-like hierarchical porous carbon via molten salt pyrolysis in a novel sequencing integration system for high-performance supercapacitors | |
| CN108773841B (en) | Porous carbon material prepared from waste diatomite and preparation method and application thereof | |
| Li et al. | Hydrothermally synthesized N and S co-doped mesoporous carbon microspheres from poplar powder for supercapacitors with enhanced performance | |
| CN108455561B (en) | Preparation method of paper-based mesoporous carbon electrode material and preparation method of electrode | |
| CN107954422B (en) | Preparation and application of mesoporous biomass carbon sheet material with high specific surface area | |
| CN103578772A (en) | Active material used for capacitor electrode and preparation method of active material | |
| CN108946695B (en) | Method for preparing porous carbon material for supercapacitor by using tar waste | |
| CN104538199A (en) | Preparation method of manganese oxide/porous carbon nanofiber composite material and product and application thereof | |
| CN110862077B (en) | Preparation method of hierarchical porous carbon material rich in mesopores for supercapacitor | |
| CN112735858A (en) | Preparation method of nitrogen and sulfur co-doped layered porous carbon hybrid material for super capacitor | |
| CN108455685B (en) | kinds of N/Co3O4Preparation method of porous composite material | |
| CN114988405B (en) | Preparation method and application of kuding tea biological porous carbon material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |