CN103280339A - Method for preparing cerium oxide electrode of supercapacitor - Google Patents
Method for preparing cerium oxide electrode of supercapacitor Download PDFInfo
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- CN103280339A CN103280339A CN2013101276550A CN201310127655A CN103280339A CN 103280339 A CN103280339 A CN 103280339A CN 2013101276550 A CN2013101276550 A CN 2013101276550A CN 201310127655 A CN201310127655 A CN 201310127655A CN 103280339 A CN103280339 A CN 103280339A
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Abstract
The invention relates to a method for preparing a cerium oxide electrode of a supercapacitor. The method comprises the following steps: a) mixing and stirring ceria powder of which the particle size is less than 1 mum, conductive agent and binder according to a certain proportion, wherein the content of the conductive agent is 10-20 wt% of the total mass of the mixture, and the content of the binder is 10-20 wt% of the total mass of the mixture; and b) coating the mixture on a current collector, and drying to obtain the cerium oxide electrode.
Description
Technical field
The present invention relates to a kind of preparation method of the cerium oxide electrode for ultracapacitor, belong to chemical industry and Materials Science and Engineering technical field.
Background technology
Ultracapacitor is a kind of high-energy-density that has, and the supporting use of the energy storage device of high power and high cycle performance and battery has broad application prospects.The various fields that need the moment high power discharge such as Aero-Space, information technology now have been widely used in.Ultracapacitor is divided into double electric layer capacitor and fake capacitance device, and wherein the fake capacitance device has higher specific capacity than double electric layer capacitor, therefore has more development potentiality.The electrode material of fake capacitance mainly is transition metal oxide, as ruthenium-oxide, nickel oxide, cobalt oxide and manganese oxide etc.That at present, the research of fake capacitance capacitor is more successful is ruthenium-oxide/H
2SO
4, system, but the ruthenium-oxide price is high, and H
2SO
4Solution is had relatively high expectations to electrode current collecting body, thereby has limited its extensive use.So the low cost of searching, high performance electrode material is imperative.Ceria is a kind of good electrode material, and it has good electrochemical redox and lower cost.The ceria of preparations such as Li and the combination electrode material of Graphene have 280Fg
-1Specific capacity.The application of collector also produces bigger influence to the performance of electrode material, and nickel foam is because three-dimensional structure and the high-specific surface area with porous is a kind of outstanding electrode current collecting body material.This patent utilizes nickel foam etc. to do collector, and cerium oxide is done active material, the electrode material that preparation has the good electrical chemical property.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of the cerium oxide electrode for ultracapacitor, to obtain to have the electrode material for super capacitor of height ratio capacity.
For achieving the above object, the present invention adopts following technical scheme:
A kind of preparation method of the cerium oxide electrode for ultracapacitor has following steps:
A) particle diameter is mixed stirring by a certain percentage less than cerium oxide powder, conductive agent and the binding agent of 1 μ m, wherein conductive agent content is 10～20wt% of mixture gross mass, and binder content is 10～20wt% of mixture gross mass;
B) mixture is coated onto on the collector, obtains the cerium oxide electrode after the drying.
Described step b) or be: the mixture of step a) is ground, be pressed into the thick film of 0.5～2 μ m then, the pressure of film with 10-50MPa is pressed on the collector, obtain the cerium oxide electrode.
Described conductive agent is one or more in acetylene black, carbon nano-tube, the carbon nanometer micro ball; Binding agent is that Kynoar or polytetrafluoroethylene are dissolved in the solution that forms in dimethylacetylamide or the dimethyl sulfoxide (DMSO) organic solution; Collector is nickel foam, stainless (steel) wire, nickel sheet, titanium sheet or graphite flake.
Compared with prior art, the present invention has following outstanding substantive distinguishing features and progressive significantly:
A) the nickel foam collector has tridimensional network, has improved the contact area between active material and electrolyte, thereby has improved the specific capacity of electrode.
B) with directly on collector the resulting electrode of deposit film compare, the adhesion between the prepared electrode active material of the present invention and collector is stronger, is conducive to prolong the useful life of electrode; The active material load quality of unit are is bigger, is conducive to improve the power of electrode.
Description of drawings
Fig. 1 is the cyclic voltammetric resolution chart of the embodiment of the invention one and embodiment two obtained electrodes.
Fig. 2 is the cyclic voltammetric performance map that electrode is tested in alkaline electrolyte liquid in the embodiment of the invention three.
Fig. 3 is the cyclic voltammetric performance map that electrode is tested in neutral electrolyte liquid in the embodiment of the invention three.
Embodiment
Below in conjunction with embodiment technical scheme of the present invention is described further.
Embodiment one
Be that 80:10:10 mix less than ceria oxide powder, acetylene black and the Kynoar (PVDF) of 1 μ m according to mass ratio with particle diameter, mixture placed stirring at room is coated in after 12 hours on the nickel foam sheet that size is 1 * 2cm on the magnetic stirring apparatus, place 120 ℃ of dry 12h of vacuum drying chamber then, finally obtain nickel foam collector cerium oxide electrode.
Use 0.1M Na
2SO
4Do electrolyte solution, saturated calomel electrode is as reference electrode, and platinum is for carrying out the cyclic voltammetric test, as shown in Figure 1 to the above-mentioned electrode that makes of electrode pair.Sweep speed is 10 mV s
-1The time, the specific volume that records is 57 F g
-1
Embodiment two
Be that 80:10:10 mix less than ceria oxide powder, acetylene black and the Kynoar (PVDF) of 1 μ m according to mass ratio with particle diameter, mixture placed stirring at room is coated in after 12 hours on the graphite flake that size is 1 * 1cm on the magnetic stirring apparatus, place 120 ℃ of dry 12h of vacuum drying chamber then, finally obtain graphite collector cerium oxide electrode.
Use 0.1M Na
2SO
4Do electrolyte solution, saturated calomel electrode is as reference electrode, and platinum is for carrying out the cyclic voltammetric test, as shown in Figure 1 to the above-mentioned electrode that makes of electrode pair.Sweep speed is 10 mV s
-1The time, the specific volume that records is 7 F g
-1
Embodiment three
Be that 70:15:15 mix less than ceria oxide powder, acetylene black and the polytetrafluoroethylene (PTFE) of 1 μ m according to mass ratio with particle diameter, be pressed into thickness after mixture ground and be the film about 2 μ m, treat to be pressed on the nickel foam collector behind the film drying, obtain the cerium oxide electrode.
Prepared cerium oxide electrode is carried out electrochemical property test in alkaline electrolyte.In the cyclic voltammetric test with saturated calomel electrode as reference electrode, platinum is to electrode, retouching speed is 5 mV s
-1, the test voltage scope is 0-0.4 V, as shown in Figure 2.Carry out the cyclic voltammetric test in 2M KOH, 2M NaOH, 2M LiOH electrolyte, the specific volume that obtains is respectively 241 F g
-1, 152 F g
-1, 87 F g
-1
Prepared cerium oxide electrode is carried out electrochemical property test in neutral electrolyte.In the cyclic voltammetric test with saturated calomel electrode as reference electrode, platinum is to electrode, retouching speed is 5 mV s
-1, the test voltage scope is 0.5-0.9 V, as shown in Figure 3.At 0.1M Na
2SO
4, 0.1M K
2SO
4, 0.1M (NH
4)
2SO
4Carry out the cyclic voltammetric test in the electrolyte, the specific volume that obtains is respectively 89 F g
-1, 61 F g
-1, 10 F g
-1
Claims (3)
1. preparation method who is used for the cerium oxide electrode of ultracapacitor is characterized in that having following steps:
A) particle diameter is mixed stirring by a certain percentage less than cerium oxide powder, conductive agent and the binding agent of 1 μ m, wherein conductive agent content is 10～20wt% of mixture gross mass, and binder content is 10～20wt% of mixture gross mass;
B) mixture is coated onto on the collector, obtains the cerium oxide electrode after the drying.
2. the preparation method of a kind of cerium oxide electrode for ultracapacitor according to claim 1, it is characterized in that, described step b) or be: the mixture of step a) is ground, be pressed into the thick film of 0.5～2 μ m then, the pressure of film with 10-50MPa is pressed on the collector, obtains the cerium oxide electrode.
3. the preparation method of a kind of cerium oxide electrode for ultracapacitor according to claim 1 and 2 is characterized in that described conductive agent is one or more in acetylene black, carbon nano-tube, the carbon nanometer micro ball; Binding agent is that Kynoar or polytetrafluoroethylene are dissolved in the solution that forms in dimethylacetylamide or the dimethyl sulfoxide (DMSO) organic solution; Collector is nickel foam, stainless (steel) wire, nickel sheet, titanium sheet or graphite flake.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116036A (en) * | 2015-08-13 | 2015-12-02 | 东北大学 | Preparation and usage method for cerium (IV) ion selectivity electrodes |
| CN106531454A (en) * | 2016-12-29 | 2017-03-22 | 铜陵市胜美达电子制造有限公司 | Ageing-resistant cobaltosic oxide nanowire carbon aerogel composite supercapacitor positive electrode material and preparation method thereof |
| CN107093521A (en) * | 2017-05-08 | 2017-08-25 | 华北电力大学（保定） | A kind of Ce/C composites, its preparation method and its application |
| CN108447702A (en) * | 2018-03-06 | 2018-08-24 | 常州大学 | A kind of high circulation service life rGO-CeO2The preparation of/PorousPANI ternary composite electrode materials |
| CN115472445A (en) * | 2022-09-29 | 2022-12-13 | 贵州民族大学 | Method for preparing super-capacitor electrode material by using cerium dioxide |
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| CN1796990A (en) * | 2004-12-20 | 2006-07-05 | 西北师范大学 | Method for fabricating electrode of Nano ceric oxide selective membrane |
| CN1813323A (en) * | 2003-04-28 | 2006-08-02 | 昭和电工株式会社 | Valve acting metal sintered body, production method therefor and solid electrolytic capacitor |
| CN101076913A (en) * | 2004-01-12 | 2007-11-21 | 燃料电池能有限公司 | Fused carbonate fuel battery cathode with mixed oxide coatings |
| CN101383418A (en) * | 2007-08-31 | 2009-03-11 | 丹麦技术大学 | Ceria and stainless steel based electrodes |
| CN102299311A (en) * | 2011-07-20 | 2011-12-28 | 彩虹集团公司 | Cathode active material and preparation method thereof and lithium ion secondary battery prepared by cathode active material |
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2013
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1813323A (en) * | 2003-04-28 | 2006-08-02 | 昭和电工株式会社 | Valve acting metal sintered body, production method therefor and solid electrolytic capacitor |
| CN101076913A (en) * | 2004-01-12 | 2007-11-21 | 燃料电池能有限公司 | Fused carbonate fuel battery cathode with mixed oxide coatings |
| CN1796990A (en) * | 2004-12-20 | 2006-07-05 | 西北师范大学 | Method for fabricating electrode of Nano ceric oxide selective membrane |
| CN101383418A (en) * | 2007-08-31 | 2009-03-11 | 丹麦技术大学 | Ceria and stainless steel based electrodes |
| CN102299311A (en) * | 2011-07-20 | 2011-12-28 | 彩虹集团公司 | Cathode active material and preparation method thereof and lithium ion secondary battery prepared by cathode active material |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116036A (en) * | 2015-08-13 | 2015-12-02 | 东北大学 | Preparation and usage method for cerium (IV) ion selectivity electrodes |
| CN106531454A (en) * | 2016-12-29 | 2017-03-22 | 铜陵市胜美达电子制造有限公司 | Ageing-resistant cobaltosic oxide nanowire carbon aerogel composite supercapacitor positive electrode material and preparation method thereof |
| CN107093521A (en) * | 2017-05-08 | 2017-08-25 | 华北电力大学（保定） | A kind of Ce/C composites, its preparation method and its application |
| CN108447702A (en) * | 2018-03-06 | 2018-08-24 | 常州大学 | A kind of high circulation service life rGO-CeO2The preparation of/PorousPANI ternary composite electrode materials |
| CN115472445A (en) * | 2022-09-29 | 2022-12-13 | 贵州民族大学 | Method for preparing super-capacitor electrode material by using cerium dioxide |
| CN115472445B (en) * | 2022-09-29 | 2024-03-29 | 贵州民族大学 | Method for preparing super capacitor electrode material by utilizing cerium dioxide |
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Application publication date: 20130904 |