CN101409336A - Composite electrode and preparation method thereof - Google Patents
Composite electrode and preparation method thereof Download PDFInfo
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- CN101409336A CN101409336A CNA2007101639008A CN200710163900A CN101409336A CN 101409336 A CN101409336 A CN 101409336A CN A2007101639008 A CNA2007101639008 A CN A2007101639008A CN 200710163900 A CN200710163900 A CN 200710163900A CN 101409336 A CN101409336 A CN 101409336A
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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
Abstract
The invention discloses a composite electrode. The composite electrode is made by sticking a conducting material substrate and a directionally arranged one-dimensional nano carbon material array. The preparation method of the composite electrode is that the bottom of the array is connected with surface of the substrate with better conductivity by sticking. The method has simple, convenient and practical operations. The directional one-dimensional nano carbon material array-based composite electrode prepared has excellent frequency response performance, high power density, high energy density and long cyclic service life, can be widely applied to the fields of batteries, super capacitors, fuel cells, catalysis industry and the like, and has good application prospect.
Description
Technical field
The present invention relates to a kind of combination electrode and preparation method thereof, belong to Chemical Engineering and field of new.Can be widely used in fields such as battery, ultracapacitor, fuel cell and catalysis industry.
Background technology
Electrochemical capacitor in double electrode layer (EDLC) has high capacitance, and electric current fast charging and discharging and length recycle advantages such as life-span greatly, has obtained using more widely in many fields of high-specific-power, high cycle efficieny and long-life power supply that need.Active carbon is to use the most a kind of EDLC electrode material, and its cost is low, specific capacity is high, mature preparation process.But the intrinsic shortcoming of active carbon has restricted the further raising of absorbent charcoal based EDLC performance.Improve the performance of EDLC, key be develop have height ratio capacity, the novel electrode material of high conductivity and good stability.Carbon nano-tube has the nano-scale of one dimension, unique electrical properties and favorable mechanical performance, after being found in 1991, just worldwide start research and used upsurge, now be widely used in fields such as flat panel display and chemical sensor, it also has application promise in clinical practice in EDLC electrode material field.
Liang Kui etc. disclose in number of patent application 0.133455.2 " superhigh-capacitance capacitor with composite carbon nanotube and manufacture method thereof " and have utilized carbon nano-tube mutually compound as capacitor electrode material with transition metal oxide and conducting polymer, but there is big contact resistance in method for electrode material is compressed on the collector electrode.Cheng Huiming etc. disclose direct growth nano carbon material in one dimension on metallic matrix in number of patent application 200410020655.1 " preparation method of a kind of combination electrode, combination electrode capacitor and combination electrode ", but this technological process is comparatively complicated, experiment condition is comparatively harsh, and the nano carbon material in one dimension directionality of preparing is not good, be curling shape more, cause and form hole in irregular shape between the 1-dimention nano charcoal, influence the frequency response performance of material, limited the raising of the specific power performance of capacitor.By contrast, the technology of preparation 1-dimention nano charcoal array is ripe on quartz or silicon base at present, and the directionality of a carbon nano-material of preparing is preferable.
Summary of the invention
It is big to the purpose of this invention is to provide a kind of power density, electrode material of good rate capability, energy density height and long service life and preparation method thereof.
The invention provides a kind of combination electrode material, this electrode is pasted with the nano carbon material in one dimension array that aligns by the good matrix of conductivity and is made, only there is less contact point in this electrode between array is with substrate, the inner binder free of electrode active material has reduced contact resistance.
The directed nano carbon material in one dimension array of combination electrode provided by the invention can be at the one or both sides of matrix.The directed available specific surface of monodimension nanometer material is big, makes combination electrode have higher specific capacity; Its aperture homogeneous, make electrolyte ion can be in the hole fast transferring, combination electrode has high rate performance preferably.
The good matrix of the conductivity of combination electrode provided by the invention can be metal or nonmetallic plate, paper tinsel, net or foam-like material such as titanium, aluminium, copper, gold, platinum, nickel, stainless steel, vitrescence charcoal, graphite, conductive plastics, conductive rubber, highly doped silicon.
Nano carbon material in one dimension in the nano carbon material in one dimension array that aligns provided by the invention can be that the Single Walled Carbon Nanotube of diameter 0.5～5nm, the multi-walled carbon nano-tubes of diameter 2～150nm or the nano carbon fiber material of diameter 20～500nm constitute.These materials have excellent conducting performance and mechanical property, make combination electrode have specific power performance and high rate performance energy preferably.
The invention provides a kind of preparation method of combination electrode, be to possess under the nano carbon material in one dimension array case that aligns, the bottom of array is connected by the method for pasting with the better conductivity substrate surface, method of attaching is directly the bottom of the array substrate surface with conductivity to be connected with the conducting resinl of graphitiferous powder or metal powder, or the bottom of the array substrate surface with conductivity is connected earlier with resin, strengthen the conductivity of junction by curing or charing again, curing temperature is 120～400 ℃, and carbonization temperature is 400～1200 ℃.
The invention provides a kind of combination electrode advantage is: this electrode is pasted with direction-sense 1-dimention nano charcoal array with the good collective of conductivity and is formed, only there is less contact point in this electrode between array is with substrate, the inner binder free of electrode active material, contact resistance is little, the electrode good rate capability, the specific power height, long service life.
The advantage that the invention provides a kind of method for preparing composite electrode is: this method can directly be utilized the directionality of growing 1-dimention nano charcoal array preferably on quartz or silicon base, and combination electrode preparation simple, convenient is easy to industrialization.
Description of drawings
Fig. 1 combination electrode
1. electric conducting material matrix, 2. tack coat, 3. nano carbon material in one dimension array
Fig. 2 nano carbon material in one dimension array scanning Electronic Speculum picture
Embodiment
Downcut and be cut into the electrode slice of 5mm * 4mm area with razor directed 1-dimention nano charcoal array that 0.8mm is high from quartz substrate, this array is pasted on the nickel foam collector, 120 ℃ of 4 hours preparation combination electrodes of oven dry down with aquadag.With 7MKOH is electrolyte, carries out electrochemical property test under the temperature conditions of 298 ± 1K.Combination electrode is a work electrode, and absorbent charcoal material is to electrode, and Hg/HgO is that reference electrode is set up the three-electrode system test macro.The current density of 50mA/g discharges and recharges, and potential range is-0.8～0V (vs.Hg/HgO), and the specific capacity that obtains is 14.1F/g.The fur carbon material electrode is carried out cyclic voltammetric and AC impedance performance test.The sweep speed of cyclic voltammetric is 5～50mV/s, and potential range is-0.8～0V (vs.Hg/HgO), finds that the CV curve shape that obtains under the different multiplying is similar, shows that the combination electrode high rate performance is splendid.The test condition of AC impedance is dc constant voltage-0.8V (vs.Hg/HgO), exchanges perturbation amplitude 5mV, and the combination electrode characteristic frequency is 2Hz.
Embodiment 2
The electrode slice that separates and be cut into 10mm * 10mm area with the hot water directed 1-dimention nano charcoal array that 0.8mm is high from quartz substrate, with resin this array is pasted on the nickel foam collector, 180 ℃ solidified 2 hours preparation combination electrodes of 800 ℃ of charings 12 hours down.To contain 1MLiPF
6EC/DMC solution (EC: DMC=1: 1) be electrolyte electrolyte, under the temperature conditions of 298 ± 1K, carry out electrochemical property test.Combination electrode is a work electrode, and absorbent charcoal material is to electrode, and platinum black electrode is that reference electrode is set up the three-electrode system test macro.The current density of 50mA/g discharges and recharges, and potential range is-1.5～0V (a vs. platinum black electrode), and the specific capacity that obtains is 24.5F/g.The fur carbon material electrode is carried out the AC impedance performance test, and test condition is dc constant voltage-1.5V (a vs. platinum black), exchanges perturbation amplitude 5mV, and the combination electrode characteristic frequency is 1Hz.
Claims (2)
1, a kind of combination electrode, it is characterized in that: this electrode is made up of with the nano carbon material in one dimension array (3) that aligns electric conducting material matrix (1), nano carbon material in one dimension is the Single Walled Carbon Nanotube of diameter 0.5～5nm, the nano carbon fiber material of the multi-walled carbon nano-tubes of diameter 2～150nm or diameter 20～500nm, the nano carbon material in one dimension array (3) that aligns pastes the one or both sides of electric conducting material matrix (1) by adhered layer (2), method of attaching is directly the bottom of the array substrate surface with conductivity to be connected with the conducting resinl of graphitiferous powder or metal powder, or the bottom of the array substrate surface with conductivity is connected earlier with resin, strengthen the conductivity of junction by curing or charing again, curing temperature is 120～400 ℃, and carbonization temperature is 400～1200 ℃.
2, combination electrode according to claim 1 is characterized in that: described electric conducting material matrix is plate, paper tinsel, net or the foam-like material of titanium, aluminium, copper, gold, platinum, nickel, stainless steel, vitrescence charcoal, graphite, conductive plastics, conductive rubber, highly doped silicon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101639008A CN101409336A (en) | 2007-10-11 | 2007-10-11 | Composite electrode and preparation method thereof |
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| CNA2007101639008A CN101409336A (en) | 2007-10-11 | 2007-10-11 | Composite electrode and preparation method thereof |
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| CN101409336A true CN101409336A (en) | 2009-04-15 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012028055A1 (en) * | 2010-08-30 | 2012-03-08 | Jiang Yaxi | Cathode plate for eft inert composite electrode, preparation method therefor and electrolysis equipment containing same |
| WO2012028052A1 (en) * | 2010-08-30 | 2012-03-08 | Jiang Yaxi | Transition board of eft inert composite electrode, preparation method thereof and electrolytic apparatus including the same |
| CN102723509A (en) * | 2012-06-15 | 2012-10-10 | 武汉理工大学 | Nanofiber array structure based three-dimensional proton conductor based on and membrane electrode and preparation thereof |
| CN102738477A (en) * | 2012-06-15 | 2012-10-17 | 武汉理工大学 | Three-dimensional proton conductor based ordered single electrode and membrane electrode as well as preparation methods |
| CN102738478A (en) * | 2012-06-15 | 2012-10-17 | 武汉理工大学 | Three-dimensional proton conductor based single electrode and fuel cell membrane electrode as well as preparation methods |
| CN102760899A (en) * | 2012-06-15 | 2012-10-31 | 武汉理工大学 | Single electrode and ordered membrane electrode based on active metal and conductive polymeric coaxial nanowire and preparation method thereof |
| CN104377458A (en) * | 2014-01-17 | 2015-02-25 | 江西理工大学 | Method for connecting carbon nanometer tube macroscopic material with metal |
| US9484123B2 (en) | 2011-09-16 | 2016-11-01 | Prc-Desoto International, Inc. | Conductive sealant compositions |
| CN107275115A (en) * | 2017-06-13 | 2017-10-20 | 武汉科技大学 | A kind of ultracapacitor |
| CN109763146A (en) * | 2019-03-27 | 2019-05-17 | 贵州省过程工业技术研究中心 | A kind of titanium composite material anode preparation method used for aluminium electrolysis |
| CN111890749A (en) * | 2020-05-23 | 2020-11-06 | 宿迁联盛科技股份有限公司 | Electrolytic cathode plate with stainless steel plate as substrate and preparation method thereof |
-
2007
- 2007-10-11 CN CNA2007101639008A patent/CN101409336A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012028052A1 (en) * | 2010-08-30 | 2012-03-08 | Jiang Yaxi | Transition board of eft inert composite electrode, preparation method thereof and electrolytic apparatus including the same |
| WO2012028055A1 (en) * | 2010-08-30 | 2012-03-08 | Jiang Yaxi | Cathode plate for eft inert composite electrode, preparation method therefor and electrolysis equipment containing same |
| US9484123B2 (en) | 2011-09-16 | 2016-11-01 | Prc-Desoto International, Inc. | Conductive sealant compositions |
| CN102723509A (en) * | 2012-06-15 | 2012-10-10 | 武汉理工大学 | Nanofiber array structure based three-dimensional proton conductor based on and membrane electrode and preparation thereof |
| CN102738477A (en) * | 2012-06-15 | 2012-10-17 | 武汉理工大学 | Three-dimensional proton conductor based ordered single electrode and membrane electrode as well as preparation methods |
| CN102738478A (en) * | 2012-06-15 | 2012-10-17 | 武汉理工大学 | Three-dimensional proton conductor based single electrode and fuel cell membrane electrode as well as preparation methods |
| CN102760899A (en) * | 2012-06-15 | 2012-10-31 | 武汉理工大学 | Single electrode and ordered membrane electrode based on active metal and conductive polymeric coaxial nanowire and preparation method thereof |
| CN104377458A (en) * | 2014-01-17 | 2015-02-25 | 江西理工大学 | Method for connecting carbon nanometer tube macroscopic material with metal |
| CN104377458B (en) * | 2014-01-17 | 2016-08-17 | 江西理工大学 | A kind of method that carbon nano-tube macroscopic material is connected with metal |
| CN107275115A (en) * | 2017-06-13 | 2017-10-20 | 武汉科技大学 | A kind of ultracapacitor |
| CN109763146A (en) * | 2019-03-27 | 2019-05-17 | 贵州省过程工业技术研究中心 | A kind of titanium composite material anode preparation method used for aluminium electrolysis |
| CN109763146B (en) * | 2019-03-27 | 2021-03-26 | 贵州省过程工业技术研究中心 | Preparation method of titanium-based composite material anode for aluminum electrolysis |
| CN111890749A (en) * | 2020-05-23 | 2020-11-06 | 宿迁联盛科技股份有限公司 | Electrolytic cathode plate with stainless steel plate as substrate and preparation method thereof |
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Open date: 20090415 |