CN103137344A - Carbon nano tube (CNT) extra large (XL) capacitor manufacturing method - Google Patents
Carbon nano tube (CNT) extra large (XL) capacitor manufacturing method Download PDFInfo
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- CN103137344A CN103137344A CN2011103838820A CN201110383882A CN103137344A CN 103137344 A CN103137344 A CN 103137344A CN 2011103838820 A CN2011103838820 A CN 2011103838820A CN 201110383882 A CN201110383882 A CN 201110383882A CN 103137344 A CN103137344 A CN 103137344A
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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
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- 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
The invention relates to a carbon nano tube (CNT) extra large (XL) capacitor manufacturing method. A low-pressure chemical vapor deposition method perpendicularly-aligned growing method is adopted on a CNT conduction substrate, mixed gas is acetylene, argon and hydrogen, the catalyst is iron or cobalt or nickel, the catalyst is vapor-deposited on the conduction substrate by the utilization of the electronic beam vapor deposition method, a component structure of an XL capacitor is composed of two electrodes and a membrane, and electrolyte is filled among the electrodes and the membrane. The XL capacitor can store a great quantity of energy, release very high peak power when used, and can be applied to electrodynamic force automobiles and linear motor drive systems.
Description
Technical field
The present invention relates to a kind of super-capacitor production method, particularly relate to a kind of carbon nano-tube super-capacitor production method.
Background technology
Super-capacitor claims again electrochemical double layer capacitor (EDLC), can store large energy, discharges high peak power, can be applicable to electric automobile and linear electric motor system.The volumetric capacitance of EDLC is up to the equivalent series resistance (ESR) lower (0.03-0.09 Ω) of 40-60F/CM. due to EDLC, and power density is high.New-energy automobile requires the energy-storage battery of high-energy-density and the energy storage capacitor of high power density, and appropriate combination both is the core of new-energy automobile.
This shows, above-mentioned existing super-capacitor production method obviously still has inconvenience and defective, and demands urgently further being improved in method and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, completed by development but have no for a long time applicable design always, and conventional method does not have appropriate method to address the above problem, this is obviously the problem that the anxious wish of relevant dealer solves.Therefore how to found a kind of new carbon nano-tube super-capacitor production method, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Summary of the invention
The object of the invention is to, overcome the defective that existing super-capacitor production method exists, and provide a kind of new carbon nano-tube super-capacitor production method, technical problem to be solved is to provide a kind of super-capacitor to claim again electrochemical double layer capacitor (EDLC), can store large energy, discharge high peak power, can be applicable to electric automobile and linear electric motor system, be very suitable for practicality.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to adopting low pressure chemical vapour deposition method vertical collimation growing method on this carbon nanotube conducting substrate of the present invention's proposition, its mist is acetylene, argon gas and hydrogen, and its catalyst is iron or cobalt or nickel.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid carbon nano-tube super-capacitor production method, wherein said its utilize the electron beam evaporation plating method with the catalyst evaporation on conductive substrate.
Aforesaid carbon nano-tube super-capacitor production method, the component structure of wherein said its super-capacitor is comprised of two electrodes and a barrier film, fills with electrolyte between electrode and barrier film.
By technique scheme, carbon nano-tube super-capacitor production method of the present invention has following advantages and beneficial effect at least: super-capacitor claims again electrochemical double layer capacitor (EDLC), can store large energy, discharge high peak power, can be applicable to electric automobile and linear electric motor system.New-energy automobile requires the energy-storage battery of high-energy-density and the energy storage capacitor of high power density, and appropriate combination both is the core of new-energy automobile.
In sum, carbon nano-tube super-capacitor production method of the present invention, adopt low pressure chemical vapour deposition method vertical collimation growing method on this carbon nanotube conducting substrate, its mist is acetylene, argon gas and hydrogen, its catalyst is iron or cobalt or nickel, its utilize the electron beam evaporation plating method with the catalyst evaporation on conductive substrate, the component structure of its super-capacitor, formed by two electrodes and a barrier film, fill with electrolyte between electrode and barrier film.This super-capacitor can store large energy, discharges high peak power during use, can be applicable to electric automobile and linear electric motor system.The present invention has significant progress technically, and has obvious good effect, is really a new and innovative, progressive, practical new design.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, and for above and other purpose of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and the cooperation accompanying drawing, be described in detail as follows.
Description of drawings
Fig. 1 is the schematic diagram of EDLC component structure of the present invention.
Embodiment
Reach for further setting forth the present invention technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, its embodiment of carbon nano-tube super-capacitor production method, method, step, feature and effect thereof to foundation the present invention proposes are described in detail as follows.
Super-capacitor claims again electrochemical double layer capacitor (EDLC), can store large energy, discharges high peak power, can be applicable to electric automobile and linear electric motor system.The volumetric capacitance of EDLC is up to 40-60F/CM
3Due to the equivalent series resistance (ESR) lower (0.03-0.09 Ω) of EDLC, power density is high.New-energy automobile requires the energy-storage battery of high-energy-density and the energy storage capacitor of high power density, and appropriate combination both is the core of new-energy automobile.
EDLC measurement method of parameters of the present invention:
The fundamental characteristics parameter of EDLC comprises: electrode surface area, electrode area are than frequency characteristic, cyclic voltammetric trade shape and the equivalent series resistance (ESR) of electric capacity, electrode volumetric capacitance, impedance.
1, electrode surface area: namely the total non-planar surfaces of carbon nano-tube amasss, and is to measure with BET (Branmauer, Emmett, the abbreviation of three scientist's names of Teller) method, is called the BET surface area, and unit is m
2/ g.Specifically, be exactly that the weight of institute's absorption monolayer gas is compared with the surface area of this individual layer gas with on carbon nano-tube (CNT) electrode surface.
2, electrode area is than electric capacity: unit is F/cm
2, CD represents with symbol, is called again differential capacitance, namely (area of BET is taken as 1cm to CD=dQ/dV
2), Q is electric charge in the Helmholty layer, V is the electromotive force between electrode and whole electrolyte.
3, volumetric capacitance: 1cm
3The electric capacity of electrode volume, unit are F/cm
3
4, the ratio of electrode weight and power: be called the weight power density, unit is KW/kg.
The vertical collimation growing method of CNT of the present invention on conductive substrate, adopt low pressure chemical evaporation (LPCVD) the method technological process of production:
1, mist is acetylene, argon gas and hydrogen.
2, catalyst is iron (Fe) or cobalt (Co) or nickel (Ni).
3, utilize the electron beam evaporation plating method with the catalyst evaporation on conductive substrate (tungsten etc.).
The computational methods of EDLC energy density of the present invention:
The structure of EDLC element: formed by two electrodes and a barrier film, fill between electrode and barrier film with electrolyte (referring to Fig. 1)
Each electrode represents that an electric capacity is the DLC of C, and the electric capacity of packaged EDLC is C/2.
Power density (KW/kg) is the function of operating voltage and equivalent series resistance (ESR), and for actual components, power density is when adding step current, and the pressure drop at two ends (IR) is determined.Then due to the load calculation power that is complementary with R.
The gravimetric capacitance Cw of single CNT electrode DLC element of the present invention and the computing formula of volumetric capacitance Cv:
C
W＝C
D·A
3 (1)
C
V＝C
D·A
3·Pc (2)
In upper two formulas,
A3: three wall carbon nano tube surface areas
C
D: differential capacitance
Pc:CNT density (" trace " of removing CNT residual on carbon-coating observation substrate determines Pc).
The computing formula of EDLC weight energy density Ew of the present invention and volume energy density Ev:
Because the electric capacity of EDLC slowly increases with voltage, suppose Ew and Ev not with change in voltage, Ew and Ev can be expressed as:
In upper two formulas, Vm is transport maximum voltage (2.7-3.5v).
DLC electrode of the present invention, aluminium collector plate, paper barrier film, the weight energy density Ew ' of the fine electrolyte configuration of second element and the computing formula of volume energy density Ev ' are:
In upper two formulas, E is always the gross energy (J) that stores in two CNT electrodes, and WAP is the weight of aluminium sheet, and WL is the weight of barrier film, and WC is the weight of CNT electrode, and We is electrolyte weight, with these weight corresponding volumes be VAP, VL, VC and Ve.
Suppose 10% of the volume and weight equivalence element total weight of EDLC external packing (Ap) and volume, the weight and volume energy density of aluminium external packing (AL) element is:
Ew″＝Ew′X0.9 (7)
Ev″＝Ev′X0.9 (8)
The material parameter of example EDLC aluminium external packing element of the present invention:
1, EDLC component structure figure: see also Fig. 1.
2, the fine electrolytical molar concentration of second is 2.0M, and density is 0.8g/cm
3, maximum working voltage 2.7V.
3, the electrolytical molar concentration＞2.7M of chlorination carp (LiCl), maximum working voltage＞3.5V.
4, aluminium foil current collection thickness 15um, density is 2.7g/cm.
5, paper barrier film density is 0.8g/cm
3, porosity is 60%, thick 10um.
6, CNT:3 wall CNT surface area 450m
2/ g, density is 0.45g/cm
3, CD=50uF/cm
2
7, aluminium external packing weight and volume accounts for 10% of whole element.
The parameter of example CNT Electrode pack EDLC element of the present invention
1, CNT pipe density is 10
12/ cm
2, acetonitrile electrolyte molar concentration is 2.0M, and the weight energy density in packing EDLC element is 21Wh/Kg, and volume energy density is 22Wh/L, and operating voltage is 2.7V, power density is 12.16KW/Kg, 13.50KW/L.
2, extension EDLC component parameters: CNT pipe density is 10
12/ cm
2, LiCI electrolyte molar concentration is 2.7M, and operating voltage is 3.5V, and weight energy density is 35Wh/Kg, and volume energy density is 37Wh/L, power density 21.28KW/Kg, 22.38KW/L.
3, CNT electrode EDLC and commercial activated carbon electrodes EDLC and Li ion battery Performance Ratio are:
the above, it is only preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet be not to limit the present invention, any those skilled in the art, within not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solution of the present invention content, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (3)
1. a carbon nano-tube super-capacitor production method, is characterized in that adopting on this carbon nanotube conducting substrate low pressure chemical vapour deposition method vertical collimation growing method, and its mist is acetylene, argon gas and hydrogen, and its catalyst is iron or cobalt or nickel.
2. carbon nano-tube super-capacitor production method as claimed in claim 1, it is characterized in that its utilize the electron beam evaporation plating method with the catalyst evaporation on conductive substrate.
3. carbon nano-tube super-capacitor production method as claimed in claim 1 is characterized in that being made of the component structure of its super-capacitor two electrodes and a barrier film, fills with electrolyte between electrode and barrier film.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114835211A (en) * | 2022-05-13 | 2022-08-02 | 中国矿业大学 | Imprinted capacitive deionization electrode tablet and preparation method and application thereof |
Citations (3)
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| CN101060038A (en) * | 2007-04-20 | 2007-10-24 | 哈尔滨工程大学 | Expanded graphite/metal oxide composite material and preparation method thereof |
| CN101236841A (en) * | 2008-01-11 | 2008-08-06 | 上海纳晶科技有限公司 | An electric chemical super capacitor making method |
| JP2009152513A (en) * | 2007-12-19 | 2009-07-09 | Linxross Inc | Stacked electric double-layer capacitor using carbon nanotubes |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101060038A (en) * | 2007-04-20 | 2007-10-24 | 哈尔滨工程大学 | Expanded graphite/metal oxide composite material and preparation method thereof |
| JP2009152513A (en) * | 2007-12-19 | 2009-07-09 | Linxross Inc | Stacked electric double-layer capacitor using carbon nanotubes |
| CN101236841A (en) * | 2008-01-11 | 2008-08-06 | 上海纳晶科技有限公司 | An electric chemical super capacitor making method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114835211A (en) * | 2022-05-13 | 2022-08-02 | 中国矿业大学 | Imprinted capacitive deionization electrode tablet and preparation method and application thereof |
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Application publication date: 20130605 |