CN109830380B - Super capacitor electrode material, preparation method and application - Google Patents
Super capacitor electrode material, preparation method and application Download PDFInfo
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- CN109830380B CN109830380B CN201910123441.3A CN201910123441A CN109830380B CN 109830380 B CN109830380 B CN 109830380B CN 201910123441 A CN201910123441 A CN 201910123441A CN 109830380 B CN109830380 B CN 109830380B
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- 239000007772 electrode material Substances 0.000 title claims abstract description 42
- 239000003990 capacitor Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 229910000000 metal hydroxide Inorganic materials 0.000 claims abstract description 33
- 150000004692 metal hydroxides Chemical class 0.000 claims abstract description 33
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 26
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 15
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000005406 washing Methods 0.000 claims abstract description 10
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 6
- 229910021645 metal ion Inorganic materials 0.000 claims abstract description 5
- 239000006260 foam Substances 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 4
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 claims description 4
- 239000012266 salt solution Substances 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 claims description 2
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 claims description 2
- 239000006262 metallic foam Substances 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 11
- 230000001070 adhesive effect Effects 0.000 abstract description 11
- 239000006258 conductive agent Substances 0.000 abstract description 10
- 239000000017 hydrogel Substances 0.000 abstract description 3
- 239000007864 aqueous solution Substances 0.000 abstract description 2
- 238000000967 suction filtration Methods 0.000 abstract description 2
- 239000002086 nanomaterial Substances 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 26
- 239000010409 thin film Substances 0.000 description 15
- 239000010408 film Substances 0.000 description 12
- 239000007795 chemical reaction product Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 5
- 238000001027 hydrothermal synthesis Methods 0.000 description 5
- 238000002484 cyclic voltammetry Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 229910052723 transition metal Inorganic materials 0.000 description 3
- 150000003624 transition metals Chemical class 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910000474 mercury oxide Inorganic materials 0.000 description 1
- UKWHYYKOEPRTIC-UHFFFAOYSA-N mercury(ii) oxide Chemical compound [Hg]=O UKWHYYKOEPRTIC-UHFFFAOYSA-N 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 239000002135 nanosheet Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
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- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention belongs to the field of nano materials, and particularly relates to a super capacitor electrode material, a preparation method and application. The preparation principle is as follows: tong (Chinese character of 'tong')The coordination of triethanolamine and metal ions is utilized to generate a complex, the triethanolamine has certain alkalinity in aqueous solution, and OH can be generated by electrolysis‑Complex and OH‑And (3) acting to generate the metal hydroxide hydrogel. The preparation method comprises the following steps: and (3) carrying out suction filtration, washing and drying on the generated metal hydroxide hydrogel to obtain a metal hydroxide film, cutting the metal hydroxide film into a required size, clamping the foamed metal current collector between two foamed nickel current collectors, and pressing the foamed metal current collectors into a whole under the pressure of 5-20MPa to prepare the working electrode for the supercapacitor. The invention provides a super capacitor electrode material, a preparation method and application thereof, and the electrode material can realize the functions of the traditional super capacitor without a conductive agent and an adhesive.
Description
Technical Field
The invention belongs to the field of preparation of electrode materials of a super capacitor, and relates to an electrode material of a super capacitor, a preparation method and application.
Background
A supercapacitor is an energy storage device interposed between a battery and a capacitor. The super capacitor has the characteristics of high charging and discharging efficiency, high power density, long cycle life, environmental friendliness and the like, and is widely applied to the fields of traffic, mobile communication, information technology, aerospace, national defense science and technology and the like.
Transition metal hydroxides are often selected as excellent capacitor materials because of their high specific capacitance and energy density. In the process of preparing a working electrode of a traditional super capacitor, besides transition metal hydroxide, a conductive agent and an adhesive are required to be added, the addition of the adhesive can cause the increase of internal resistance so as to inhibit electron transmission, the simultaneous addition of the conductive agent and the adhesive can not only increase the weight of the working electrode so as to cause the capacitor to be heavy and difficult to carry, but also can cause the falling of the conductive agent and the adhesive easily along with the long-term use of the super capacitor, so that the performance of the capacitor is influenced.
Therefore, the electrode material of the super capacitor without adding a conductive agent and an adhesive is required to be developed.
Disclosure of Invention
Aiming at the technical defects, the invention provides the electrode material of the super capacitor, the preparation method and the application, and the electrode material can realize the comprehensive performance of the traditional super capacitor through a conductive agent, an adhesive and a transition metal hydroxide.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention aims to provide a preparation method of a supercapacitor electrode material, which comprises the following steps:
(1) dissolving metal salt in water to prepare a salt solution with the concentration of 0.01-0.1 mol/L; the metal salt is one or a mixture of more of nickel chloride, nickel nitrate, copper chloride or copper nitrate;
(2) adding triethanolamine into the salt solution prepared in the step (1) to obtain a mixed solution, wherein the molar ratio of the triethanolamine to the metal ions is 3-24: 1;
(3) putting the mixed solution obtained in the step (2) into a reaction kettle, and crystallizing at 120-220 ℃ for 6-24 h;
(4) washing, filtering and drying the crystallized product obtained in the step (3) to obtain a metal hydroxide film;
(5) preparing a foam metal current collector: ultrasonically washing the foam metal by using dilute hydrochloric acid, water and ethanol in sequence, and drying in vacuum to obtain a foam metal current collector; the foam metal is foam nickel or foam copper;
(6) and (4) clamping the metal hydroxide film in the step (4) between two foam metal current collectors, and pressurizing to 5-20MPa by using a tablet press to obtain the electrode material of the super capacitor.
Preferably, when the electrode material of the supercapacitor is prepared, the metal salt and the foam metal are the same metal.
Preferably, the drying conditions in step (4) are as follows: drying at 40-60 deg.C for 6-8 hr.
Preferably, the vacuum drying conditions in step (5) are as follows: drying at 50-80 deg.C under vacuum for 3-5 hr.
Preferably, in the step (5), the foamed metal current collector is cut into 1 × 1 × 0.2cm3And then washed again.
Preferably, the metal hydroxide film obtained in step (4) is cut into pieces of 1X 0.1cm3Cutting the foam metal current collector obtained in the step (5) into 1 multiplied by 0.2cm3The size of (d); and then, the operation of the step (6) is carried out.
Preferably, the supercapacitor electrode material is applied to preparation of a supercapacitor.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention provides a super capacitor electrode material, a preparation method and application, wherein a coordination compound is generated by utilizing the coordination of Triethanolamine (TEOA) and metal ions, the triethanolamine has certain alkalinity in an aqueous solution, and OH can be generated by electrolysis-With increasing temperature, the coordination decreases, the metal ions and OH-The metal hydroxide hydrogel is generated by the action, and the metal hydroxide film material can be prepared by controlling the reaction conditions.
(2) The electrode material of the super capacitor provided by the invention is simple to operate in the process of preparing the working electrode, the material can be cut into required sizes at will, a conductive agent and an adhesive are not added, the material is directly clamped between two foam metal current collectors prepared by the invention, and the material is directly pressed by a tablet press or a roller press and then is used as the electrode material in the super capacitor.
(3) The working electrode prepared from the metal hydroxide has good electrochemical performance in a KOH electrolyte, and realizes excellent specific capacitance in a three-electrode system, wherein the specific capacitance reaches 2268F/g under the condition of 0.5A/g. The composite material is a super capacitor composite material with good capacitive performance, and has long-term significance in the aspect of practical application.
Drawings
FIG. 1 is a coil of a metal hydroxide thin film material according to the present invention;
FIG. 2 is an expanded view of a metal hydroxide thin film material of the present invention;
FIG. 3 is an SEM image of a metal hydroxide thin film material of the present invention;
FIG. 4 is an XRD pattern of a metal hydroxide thin film material of the present invention;
FIG. 5 is a structural diagram of a working electrode of the method for preparing the electrode material of the supercapacitor according to the present invention;
FIG. 6 is a cyclic voltammogram of a supercapacitor electrode material of the present invention at different scan rates.
Detailed Description
The following description of the preferred embodiments and accompanying fig. 1-5 are used in conjunction with the accompanying drawings in the embodiments of the invention to illustrate the preferred embodiments.
Example 1
The preparation method of the metal hydroxide film material in the embodiment 1 comprises the following steps:
1mmol of NiCl was accurately weighed2·6H2O, adding 25mL of water, adding magnetons, stirring at room temperature for 10min until NiCl is obtained2·6H2And after O is completely dissolved, 9mmol of triethanolamine is dropwise added, the mixture is stirred for 20min, and the obtained mixture is transferred into a 50mL stainless steel reaction kettle for hydrothermal reaction at the hydrothermal temperature of 180 ℃ for 12 h. And after the reaction is finished, taking out the reaction product, cooling the reaction product to room temperature, centrifugally washing the reaction product, and drying the reaction product for 12 hours in vacuum at the temperature of 60 ℃ to obtain the metal hydroxide film material.
Example 2
This example 2 is a method for preparing a metal hydroxide thin film material, comprising the following steps:
1mmol of NiCl was accurately weighed2·6H2O, adding 25mL of water, adding magnetons, stirring at room temperature for 10min until NiCl is obtained2·6H2And after O is completely dissolved, 12mmol of triethanolamine is dropwise added, the mixture is stirred for 20min, and the obtained mixture is transferred into a 50mL stainless steel reaction kettle for hydrothermal reaction at the hydrothermal temperature of 180 ℃ for 12 h. Taking out and cooling after the reaction is finishedAnd (3) cooling to room temperature, centrifugally washing, and vacuum-drying at 60 ℃ for 12h to obtain the metal hydroxide film material.
Example 3
This example 3 is a method for preparing a metal hydroxide thin film material, comprising the following steps:
1mmol of NiCl was accurately weighed2·6H2O, adding 25mL of water, adding magnetons, stirring at room temperature for 10min until NiCl is obtained2·6H2And after O is completely dissolved, 9mmol of triethanolamine is dropwise added, the mixture is stirred for 20min, and the obtained mixture is transferred into a 50mL stainless steel reaction kettle for hydrothermal reaction at the hydrothermal temperature of 180 ℃ for 8 h. And after the reaction is finished, taking out the reaction product, cooling the reaction product to room temperature, centrifugally washing the reaction product, and drying the reaction product for 12 hours in vacuum at the temperature of 60 ℃ to obtain the metal hydroxide film material.
Example 4
The preparation method of the metal hydroxide film material in this embodiment 4 includes the following steps:
accurately weigh 0.9mmol of NiCl2·6H2O and 0.1mmol Cu (NO)3)2·6H2O, adding 25mL of water, adding magneton, stirring at room temperature for 10min until 0.9mmol of NiCl2·6H2O and 0.1mmol Cu (NO)3)2·6H2And after O is completely dissolved, 12mmol of triethanolamine is dropwise added, the mixture is stirred for 20min, and the obtained mixture is transferred into a 50mL stainless steel reaction kettle for hydrothermal reaction at the hydrothermal temperature of 180 ℃ for 12 h. And after the reaction is finished, taking out the mixture, cooling the mixture to room temperature, centrifugally washing the mixture, and drying the mixture for 12 hours in vacuum at the temperature of 60 ℃ to obtain the metal hydroxide mixture film material.
We take the metal hydroxide thin film material prepared in example 1 as an example, and perform a performance test on the metal hydroxide thin film material, wherein:
FIGS. 1 and 2 are photographs of the metal hydroxide thin film of example 1, and it can be seen from FIG. 1 that the material prepared in example 1 has a certain flexibility; as can be seen from FIG. 1, a uniform film material with certain transparency and continuity is obtained after the steps of suction filtration, washing and drying.
Fig. 3 is an SEM image of the metal hydroxide thin film in example 1, and it can be seen from fig. 2 that the prepared metal hydroxide thin film material has an ultra-thin 2D nanosheet structure, self-assembled from numerous tiny nanoparticles.
FIG. 4 is an XRD pattern of a metal hydroxide thin film in example 1 of the present invention, and it can be seen from FIG. 3 that a sample of the prepared thin film has β -Ni (OH)2(JCPDS 00-014-0117) has characteristic absorption peaks at 33.3 degrees, 35.59 degrees, 38.6 degrees, 43.6 degrees, 51.8 degrees, 59.4 degrees, 62.5 degrees, 69.5 degrees and 72.8 degrees 2 theta, which indicates that the film material is beta-Ni (OH)2。
FIG. 5 is a photograph of a working electrode of the electrode material of a supercapacitor according to example 1 of the present invention. The working electrode is simple to prepare, and the material can be cut into 1 multiplied by 0.2cm3The size, the conductive agent and the adhesive are not added, the nickel foam is directly clamped between two pieces of foam nickel, and the nickel foam is directly pressed by a tablet press or a roller press and then is used as an electrode material in a super capacitor.
We also tested examples 3-5, which also have similar surface microstructure characteristics as example 1, and because of the ultra-thin 2D surface microstructure characteristics of the supercapacitor electrode materials prepared in examples 1-4, they can be used as working electrode materials in supercapacitors.
We next performed cyclic voltammetry measurements on the performance of supercapacitors, using the preparation of working electrodes of one of the supercapacitor electrode materials prepared in examples 1-4.
The specific test conditions were: a platinum electrode is used as a counter electrode, a mercury oxide electrode is used as a reference electrode, the working electrode and the electrolyte are 6mol KOH solution, the voltage window is 0-0.5V, and the scanning speed is 5mV/S-100 mV/S. The specific test results of the supercapacitor electrode materials of examples 1 to 4 as working electrodes are shown in table 1 below:
table 1 results of performance tests on electrode materials of a supercapacitor provided in examples 1 to 4
As can be seen from Table 1, the supercapacitor electrode materials prepared in examples 1 to 4 all have excellent capacitance performance in 6mol KOH electrolyte. It can be seen that the specific capacitances of examples 1-4 of the present invention can reach 2025F/g, 1956F/g, 1525F/g and 1716F/g, respectively, when charging and discharging at a current density of 0.5A/g.
As detected, in the prior art, when the current density is 1A/g for charging and discharging, the porous Ni (OH)2The specific capacitance of the nano-particles can reach 1842F/g, Ni (OH) synthesized by a hydrothermal method2The specific capacitance of the electrode material of the super capacitor with a 2D or 3D structure prepared by some other methods can reach 1747F/g in 6mol KOH electrolyte solution at the current density of 1A/g,
table 1 comparing the test results with the prior art, the supercapacitor of the present invention requires a small current density, but the specific capacitance produced is comparable to the prior art, and the present invention does not require conductive agents and adhesives.
In addition, we further determined the cyclic voltammograms at different scan rates for the supercapacitor electrode material provided in example 1, and FIG. 6 is the cyclic voltammogram at different scan rates for the metal hydroxide thin film material provided in example 1 (the scan rates are sequentially 5mV/s, 10 mV/s, 20mV/s, 30mV/s, 50mV/s, 80mV/s, and 100mV/s along the direction of the arrow. As can be seen from FIG. 5, the metal hydroxide thin film material has a pair of symmetrical redox peaks at different scan rates, indicating that the sample has pseudocapacitance properties.
In conclusion, the invention not only provides a preparation method of the electrode material of the super capacitor, but also tests show that the super capacitor can completely replace the traditional capacitor containing the conductive agent and the adhesive in the practicability, so the invention has long-term significance in the aspect of practical application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations. The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of protection is not limited thereto. The equivalents and modifications of the present invention which may occur to those skilled in the art are within the scope of the present invention as defined by the appended claims.
Claims (9)
1. A preparation method of a super capacitor electrode material is characterized by comprising the following steps:
(1) dissolving metal salt in water to prepare a salt solution with the concentration of 0.01-0.1 mol/L; the metal salt is one or a mixture of more of nickel chloride, nickel nitrate, copper chloride or copper nitrate;
(2) adding triethanolamine into the salt solution prepared in the step (1) to obtain a mixed solution, wherein the molar ratio of the triethanolamine to the metal ions is 3-24: 1;
(3) putting the mixed solution obtained in the step (2) into a reaction kettle, and crystallizing at 120-220 ℃ for 6-24 h;
(4) washing, filtering and drying the crystallized product obtained in the step (3) to obtain a metal hydroxide film;
(5) preparing a foam metal current collector: ultrasonically washing the foam metal by using dilute hydrochloric acid, water and ethanol in sequence, and then drying in vacuum to obtain a foam metal current collector; the foam metal is foam nickel or foam copper;
(6) and (4) clamping the metal hydroxide film in the step (4) between two foam metal current collectors, and pressurizing to 5-20MPa by using a tablet press to obtain the electrode material of the super capacitor.
2. The method for preparing the electrode material of the supercapacitor according to claim 1, wherein the metal salt and the metal foam are made of the same metal when the electrode material of the supercapacitor is prepared.
3. The preparation method of the electrode material of the supercapacitor according to claim 1, wherein the drying conditions in the step (4) are as follows: drying at 40-60 deg.C for 6-8 hr.
4. The method for preparing the electrode material of the supercapacitor according to claim 1, wherein the vacuum drying conditions in the step (5) are as follows: drying at 50-80 deg.C under vacuum for 3-5 hr.
5. The method for preparing the electrode material of the supercapacitor according to claim 1, wherein the concentration of the dilute hydrochloric acid in the step (5) is 0.1-1 mol/L.
6. The method for preparing the electrode material of the supercapacitor according to claim 1, wherein the foamed metal current collector is cut into 1 x 0.2cm in the step (5)3And then washed again.
7. The method for preparing the electrode material of the supercapacitor according to claim 6, wherein the metal hydroxide film obtained in the step (4) is cut into 1 x 0.1cm3Cutting the foam metal current collector obtained in the step (5) into 1 multiplied by 0.2cm3The size of (d); and then, the operation of the step (6) is carried out.
8. The supercapacitor electrode material prepared by the method for preparing the supercapacitor electrode material according to any one of claims 1 to 7.
9. Use of the supercapacitor electrode material according to claim 8 in the preparation of a supercapacitor.
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| CN102891008A (en) * | 2011-07-21 | 2013-01-23 | 北京化工大学 | Nickel hydroxide nanosheet thin-film material as well as preparation method and application thereof |
| JP5527630B2 (en) * | 2012-04-23 | 2014-06-18 | 国立大学法人 宮崎大学 | Nickel hydroxide nanosheet and method for producing the same |
| CN104752069B (en) * | 2013-12-31 | 2018-10-26 | 西北大学 | A kind of preparation method of metal oxide or metal oxide composite |
| CN105448527B (en) * | 2015-11-24 | 2018-02-06 | 青岛能迅新能源科技有限公司 | A kind of electrode material for ultracapacitor and preparation method thereof |
| CN106158431A (en) * | 2016-09-18 | 2016-11-23 | 北京化工大学 | A kind of preparation method and application of basic oxide nano-array super capacitor material |
| CN107452515A (en) * | 2017-03-08 | 2017-12-08 | 中南大学 | A kind of method that electrode of super capacitor is prepared based on nano silver wire |
| CN106935417A (en) * | 2017-03-15 | 2017-07-07 | 苏州海凌达电子科技有限公司 | A kind of preparation method and applications of super capacitor material |
| CN107522241A (en) * | 2017-08-20 | 2017-12-29 | 桂林理工大学 | A kind of preparation method and applications of nickel cobalt double-metal hydroxide |
| CN107758750A (en) * | 2017-10-19 | 2018-03-06 | 郑州比克电池有限公司 | A kind of method that hydro-thermal method prepares the nickel hydroxide nano piece of different-shape |
| CN207503814U (en) * | 2017-11-16 | 2018-06-15 | 四川省西科六木科技有限公司 | One kind coats lithium-ion capacitor without using perforated foil |
| CN108609599A (en) * | 2018-05-30 | 2018-10-02 | 北京化工大学常州先进材料研究院 | The preparation method of nickel hydroxide nano piece self assembly nickel phosphates cobalt club shaped structure composite material |
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