CN102903530A - Method for preparing nickel hydroxide/carbon composite electrode material of three-dimensional structure - Google Patents
Method for preparing nickel hydroxide/carbon composite electrode material of three-dimensional structure Download PDFInfo
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- CN102903530A CN102903530A CN 201210438049 CN201210438049A CN102903530A CN 102903530 A CN102903530 A CN 102903530A CN 201210438049 CN201210438049 CN 201210438049 CN 201210438049 A CN201210438049 A CN 201210438049A CN 102903530 A CN102903530 A CN 102903530A
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Abstract
The invention aims to develop a method for preparing a nickel-based composite electrode material which has better capacitive properties and is of a three-dimensional structure. Compared with the traditional methods such as a precipitation method, a hydrothermal method and a solvothermal method, the method has the characteristics of structural controllability, good repeatability, no pollution, high product purity and the like, and can be used to prepare other types of carbon-based composite materials of the three-dimensional structure in an expansion way. The prepared nickel hydroxide/carbon material of the three-dimensional structure is used to assemble a three-electrode system, and the capacitive performance is evaluated in 6MKOH electrolyte. In a potential interval of 0-0.5, when the current density is 10mA.cm<2>, the specific capacitance reaches 1398F.g<1>, and very high specific capacitance is displayed. Accordingly, the material as an electrode material of a supercapacitor has potential application prospect.
Description
Technical field
The present invention relates to a kind of derivative nitrogen-doped carbon nanometer pipe of conducting polymer that utilizes and be matrix, the preparation method of the three-dimensional structure sized nickel hydroxide/carbon composite material that is consisted of in carbon nano tube surface by nanometer fibrous metal hydroxides vertical-growth.Integrated by structural design, compositional optimization, synthetic method, realize the raising of material energy-storage property, belong to the new technology of electrode material for super capacitor preparation.
Background technology
Along with the development of electric automobile and various electronic equipments, the ultracapacitor with good power characteristic has been subject to paying close attention to widely both at home and abroad.Based on the difference of energy storage mechanism, ultracapacitor can be divided into two classes: a kind ofly be based on the electric double layer capacitance that carbon electrode/the electrolyte interface separation of charge produces; Another kind is to adopt RuO
2Make the capacitor of electrode Deng noble metal (hydrogen) oxide, to utilize the redox reaction that (hydrogen) oxide electrode surface and body occur in mutually and the electric capacity that produces, because the generation mechanism of such electric capacity is different from electric double layer capacitance and follow the transmittance process of electric charge to occur, this electric capacity is called as pseudo capacitance.
In various electrode materials, nickel-base material is cheap owing to having, and the theoretical capacity advantages of higher has received more concern.Yet still there are the shortcomings such as unstable properties, resistance is large, utilance is low in this class material in electrochemical process.Therefore, people attempt to solve the problems referred to above by approach such as structural design, compositional optimizations.Present studies show that, with material with carbon element and (hydrogen) nickel oxide compound be a kind of good plan that improves energy storage efficiency.General, selected matrix carbon material has active carbon, carbon nano-tube, is very rare and adopt highly active nitrogen-doped carbon nanometer pipe.Consider that there is certain difficulty in constructing of three-dimensional structure material, the present invention is take the derivative carbon nano-tube of conducting polymer as matrix, by the auxiliary this integrated preparation method of hydro-thermal of ultrasonic-backflow-reverse microemulsion, realize one dimension nickel hydroxide nano fiber at the oriented growth of this special carbon nano tube surface, thereby obtain the good three-dimensional structure nickel hydroxide/carbon nano tube composite material of capacitive property.By Literature Consult, traditional precipitation method, hydro thermal method, pyrolysismethod etc. are adopted in the preparation of nickel-base composite material usually, but these methods are difficult to realize nickel hydroxide oriented growth on the carbon pipe.
Research contents
The objective of the invention is to develop a kind of preparation method with Ni-based combination electrode material of three-dimensional structure of better capacitance characteristic.In contrast to the methods such as traditional precipitation method, hydro thermal method, solvent-thermal method, this method has structural controllability, excellent performance, favorable reproducibility, pollution-free, product purity high, and is fit to very much the C-base composte material of the various three-dimensional structures of preparation.
Technical scheme of the present invention: take the derivative carbon nano-tube of conducting polymer as matrix, distilled water is solvent, by ultrasonic and reflux, realizes that the nickel hydroxide seed is in the formation of carbon nano tube surface.Then utilize the auxiliary hydrothermal method of reverse microemulsion, realize that the nickel hydroxide nano fiber at the growth in situ of carbon nano tube surface, finally obtains by a kind of three-dimensional structure composite material that can be used as electrode material for super capacitor of nickel hydroxide nano fiber vertical-growth in carbon nano tube surface.
Extract operating procedure: at first, the carbon nano-tube that the polypyrrole pipe pyrolysis that the seed pattern legal system is standby becomes nitrogen to mix.Then, a certain amount of nitrogen-doped carbon nanometer pipe and nickel salt are joined in the deionized water ultrasonic and backflow certain hour.Afterwards, this mixed liquor is cooled to room temperature after, add again a certain amount of in advance organic liquid mixture of preparation, then final mixed liquor is transferred in the water heating kettle and reacts after several hours, obtain the nickel hydroxide/carbon nano tube composite material.
Three-dimensional hydrogen nickel oxide/the material with carbon element that adopts this method preparation is carried out electrode of super capacitor performance evaluation.In the potential region of 0 ~ 0.5 V, be 10 mAcm in current density
2The time, than electric capacity up to 1398 Fg
1, demonstrate high ratio electric capacity.
Claims (2)
1. press claims 1 described electrode material, it is characterized in that: electrode material is the composite material of three-dimensional structure, and wherein metal hydroxides is the nanofiber of one-dimentional structure, the carbon nano tube surface that its vertical-growth mixes at nitrogen; Three steps of hydro-thermal of ultrasonic, backflow and reverse microemulsion have been experienced in the preparation process.
2. press claims 1 described negative material, it is characterized in that: the sized nickel hydroxide/carbon compound of preparation in the potential region of 0 ~ 0.5 V, is 10 mAcm in current density
2The time, can be up to 1398 Fg than electric capacity
1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201210438049 CN102903530A (en) | 2012-11-06 | 2012-11-06 | Method for preparing nickel hydroxide/carbon composite electrode material of three-dimensional structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210438049 CN102903530A (en) | 2012-11-06 | 2012-11-06 | Method for preparing nickel hydroxide/carbon composite electrode material of three-dimensional structure |
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| CN102903530A true CN102903530A (en) | 2013-01-30 |
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| CN 201210438049 Pending CN102903530A (en) | 2012-11-06 | 2012-11-06 | Method for preparing nickel hydroxide/carbon composite electrode material of three-dimensional structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106952744A (en) * | 2017-03-13 | 2017-07-14 | 黄冈师范学院 | A kind of laminar sized nickel hydroxide/carbon composite material and its preparation method and its application in ultracapacitor is prepared |
| CN109950053A (en) * | 2019-02-25 | 2019-06-28 | 深圳清华大学研究院 | Carbon based metal oxide/hydroxide composite material, preparation method, capacitor |
| CN111640585A (en) * | 2020-06-05 | 2020-09-08 | 扬州大学 | N-CNT @ Co applied to super capacitor3O4/C@Ni(OH)2Composite material and preparation method thereof |
-
2012
- 2012-11-06 CN CN 201210438049 patent/CN102903530A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106952744A (en) * | 2017-03-13 | 2017-07-14 | 黄冈师范学院 | A kind of laminar sized nickel hydroxide/carbon composite material and its preparation method and its application in ultracapacitor is prepared |
| CN109950053A (en) * | 2019-02-25 | 2019-06-28 | 深圳清华大学研究院 | Carbon based metal oxide/hydroxide composite material, preparation method, capacitor |
| CN109950053B (en) * | 2019-02-25 | 2021-05-14 | 深圳清华大学研究院 | Carbon-based metal oxide/hydroxide composite material, preparation method and capacitor |
| CN111640585A (en) * | 2020-06-05 | 2020-09-08 | 扬州大学 | N-CNT @ Co applied to super capacitor3O4/C@Ni(OH)2Composite material and preparation method thereof |
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Application publication date: 20130130 |