CN103680994A - High-specific-volume electrode thin film and manufacturing method thereof - Google Patents

High-specific-volume electrode thin film and manufacturing method thereof Download PDF

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Publication number
CN103680994A
CN103680994A CN201310694326.4A CN201310694326A CN103680994A CN 103680994 A CN103680994 A CN 103680994A CN 201310694326 A CN201310694326 A CN 201310694326A CN 103680994 A CN103680994 A CN 103680994A
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metal oxide
oxide
graphene
film
graphene oxide
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杨亚杰
袁文涛
杨晓洁
杨文耀
徐建华
蒋亚东
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University of Electronic Science and Technology of China
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    • YGENERAL 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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    • Y02E60/13Energy storage using capacitors

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Abstract

The embodiment of the invention discloses a manufacturing method for a high-specific-volume electrode thin film. The manufacturing method comprises the steps that a graphene oxide LB film is deposited through the LB film method, and then is reduced to be reduced graphene oxide; then, a metal oxide layer is deposited on the surface of the reduced graphene oxide through the electrochemical method; finally, a conducting polymer layer is deposited on the metal oxide through the chemical gas phase polymerization deposition method, and therefore the high-specific-volume electrode thin film is obtained. According to the high-specific-volume electrode thin film manufactured based on the manufacturing method, the reduced graphene oxide is used as a substrate, the electrode thin film has the larger specific surface area, and then the metal oxide and the conducting polymer are deposited respectively, so that electrode thin film materials have the electrical double-layer capacitance and pseudocapacitance, and the specific capacity of an electrode is greatly increased.

Description

A kind of Fabrication of High Specific Capacitance electrode film and manufacture method thereof
Technical field
The present invention relates to thin-film material technical field, especially relate to a kind of height ratio capacity electrode film and manufacture method thereof.
Background technology
Along with socioeconomic development, people more and more pay close attention to for green energy resource and biological environment, and ultracapacitor is as a kind of novel energy storage device, because its superiority can not be substituted is more and more subject to people's attention.With traditional capacitor, compare with secondary cell, the energy force rate ordinary capacitor that ultracapacitor stores electric charge is high, and have that the speed of discharging and recharging is fast, efficiency is high, environmentally safe, have extended cycle life, the feature such as serviceability temperature wide ranges, fail safe height.Ultracapacitor tool has been widely used.Combine with the material of the high-energy-density such as fuel cell, ultracapacitor can provide energy fast to discharge, and meets high power requirements, thereby fuel cell can only be used as energy source.At present, the energy density of ultracapacitor can, up to 20kW/kg, start to seize this part market between traditional capacitor and battery.
Ultracapacitor is mainly comprised of four parts such as collector, electrode, electrolyte and barrier films, and wherein electrode material is one of most critical factor affecting ultracapacitor performance and production cost.Research and development high-performance, electrode material is the important content of ultracapacitor R&D work cheaply.
As a rule, electrode material mainly contains three types: material with carbon element, conduction high polymer and metal oxide.
Because material with carbon element mainly relies on the surperficial energy storage of material, to compare with pseudo-capacitance materials such as conducting polymers with metal oxide, its specific discharge capacity is not high all the time.Therefore, utilize in recent years compound mode that material with carbon element and pseudo-capacitance combination of materials are got up to become an effective means that improves capacitor specific energy.For example carbon and metal oxide and hydrate thereof, the made composite material of carbon and conducting polymer had both produced electric double layer capacitance and had also produced faraday's electric capacity when discharging and recharging, thereby the capacitor of preparation has higher energy density and power density simultaneously.But how to realize the especially good cooperative effect between carbon nano-structured material and metal oxide or conducting polymer of material with carbon element, thereby obtain to greatest extent height ratio capacity and there is good stability, remain letter problem to be solved.
Summary of the invention
One of object of the present invention is to provide a kind of method of manufacturing Fabrication of High Specific Capacitance electrode film, wherein the ultracapacitor Fabrication of High Specific Capacitance electrode film of the method manufacture employing redox graphene is matrix, by composite conductive polymer and inorganic, metal oxide, thereby make electrode there is higher specific capacity.
One of object of the present invention is to provide a kind of Fabrication of High Specific Capacitance electrode film having compared with height ratio capacity.
Technical scheme disclosed by the invention comprises:
A kind of method of manufacturing Fabrication of High Specific Capacitance electrode film is provided, has it is characterized in that, having comprised: steps A: graphene oxide dispersion of materials, in organic solvent, has been obtained to graphene oxide dispersion liquid; Step B: described graphene oxide dispersion liquid is spread in to the deionized water surface in LB film groove, and adopt LB film build method that graphene oxide is shifted and is deposited into substrate surface; Step C: described on-chip graphene oxide is reduced to redox graphene; Step D: use electrochemical deposition method at described redox graphene surface deposition metal oxide; Step e: with chemical gaseous phase depositing process depositing electrically conductive polymer on described metal oxide layer.Thereby obtain a kind of electrode film of height ratio capacity.
In an embodiment, described step C comprises: the described substrate that has deposited described graphene oxide is placed in to the high-temperature closed environment that contains steam and reduces.
In an embodiment, the temperature of described high-temperature closed environment is 190 to 210 degrees Celsius.
In an embodiment, described metal oxide is manganese dioxide, ruthenic oxide and vanadium dioxide.
In an embodiment, described conducting polymer is polyaniline, polythiophene or poly-3,4-rthylene dioxythiophene.
In an embodiment, described substrate is tin indium oxide or aluminium foil.
In an embodiment, described organic solvent is the deionized water solution of methyl alcohol or isopropyl alcohol.
A kind of Fabrication of High Specific Capacitance electrode film is also provided in embodiments of the invention, has it is characterized in that, comprised substrate; Redox graphene layer, described redox graphene layer is formed on described substrate; Metal oxide layer, described metal oxide is formed on described redox graphene layer; Conductive polymer coating, described conductive polymer coating is formed on described metal oxide layer.
In an embodiment, described metal oxide is manganese dioxide, ruthenic oxide or vanadium dioxide.
In an embodiment, described conducting polymer is polyaniline, polythiophene or poly-3,4-rthylene dioxythiophene.
In the method for the manufacture Fabrication of High Specific Capacitance electrode film that the embodiment of the present invention provides, adopt redox graphene LB film as electrode film matrix, it has advantages of that specific area is large, conductive characteristic good, at its surface deposition conducting polymer, can effectively prevent that the specific capacity that the contraction of polymer in charge and discharge process and deformation cause from changing.In addition, by depositing metal oxide on redox graphene and conducting polymer, make electrode material contain electric double layer capacitance and fake capacitance simultaneously, thereby can greatly increase the specific capacity of electrode film.
Accompanying drawing explanation
Fig. 1 is a kind of schematic flow sheet of manufacturing the method for Fabrication of High Specific Capacitance electrode film of one embodiment of the invention.
Fig. 2 is the schematic diagram of the structure of the Fabrication of High Specific Capacitance electrode film that method is manufactured according to an embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing, describe the concrete steps of method of the manufacture Fabrication of High Specific Capacitance electrode film of embodiments of the invention in detail.
As shown in Figure 1, in one embodiment of the present of invention, a kind of method of manufacturing Fabrication of High Specific Capacitance electrode film comprises step 10, step 12, step 14, step 16 and step 18.
Step 10: prepare graphene oxide dispersion soln.
In the method for embodiments of the invention, first stannic oxide/graphene nano structural material is scattered in organic solvent, to obtain graphene oxide fine dispersion liquid, is beneficial to it and sprawls at gas/liquid interface.
In embodiments of the invention, organic solvent can be the deionized water solution of methyl alcohol or the deionized water solution of isopropyl alcohol.
In embodiments of the invention, the concentration of graphene oxide in organic solvent can be that 10 mg/ml (mg/ml) are to 20 mg/ml (mg/ml).
Step 12: adopt LB film sedimentation that graphene oxide is deposited on to substrate.
In embodiments of the invention, will use LB film-forming apparatus to form the orderly high density basal body structure of graphene oxide.In step 12, obtained after graphene oxide dispersion liquid, at least a portion of graphene oxide dispersion liquid is spread in to the surface of the deionized water in the LB film groove of LB film-forming apparatus, thus on this deionized water surface (being the gas/liquid interface in LB film groove) the upper orderly high density alignment layer of one deck graphene oxide that forms.
Formed the orderly high density alignment layer of graphene oxide in LB film groove after, can use LB to become embrane method that the graphene oxide in LB film groove is transferred on applicable substrate.
For example, in an embodiment, can control the orderly high density alignment layer of sliding barrier compressed oxygen functionalized graphene of LB film-forming apparatus to film forming mould, and adopt the mode of vertical film forming that the orderly layer of oxide nano structure is transferred to substrate surface.
In embodiments of the invention, substrate can be tin indium oxide (ITO, for example flexible ITO) or aluminium foil, can be also the substrate of other applicable material.
In the other embodiment of the present invention, above-mentioned steps 12 can be repeatedly, thereby on substrate, form multilayer graphene oxide LB rete as electrode film basal body structure.
Here, the concrete structure of LB film-forming apparatus can become the structure of membrane structure identical with LB conventional in this area, be not described in detail in this.
Step 14: graphene oxide is reduced to redox graphene
On substrate, formed after graphene oxide layer, in step 14, the graphene oxide layer of this formation has been reduced to redox graphene, thereby makes film there is good conductivity.
In an embodiment of the present invention, the reducing condition of step 14 is for to be placed in by the substrate with graphene oxide the 190-210 ℃ of environment that contains steam, can guarantee that graphene oxide effectively reduces at lower temperature, and not affect the pattern of graphene oxide LB film.
Step 16: adopt electrochemical method depositing metal oxide on redox graphene
On substrate, graphene oxide is reduced to after redox graphene, in step 16, adopts method depositing metal oxide on redox graphene of electrochemical deposition, thereby make electrode material there is the capacitance characteristic of metal oxide.
In embodiments of the invention, the metal oxide in step 16 can be manganese dioxide, ruthenic oxide and vanadium dioxide, etc.
Step 18: adopt chemical vapour deposition technique depositing electrically conductive polymer on metal oxide
On redox graphene after depositing metal oxide, in step 18, adopt chemical vapour deposition technique depositing electrically conductive polymer on metal oxide, thereby make electrode material there is the capacitance characteristic of conducting polymer, increase the specific capacity of electrode material.This chemical gaseous phase depositing process is simple, and can obtain ultra-thin conductive polymer coating.
In embodiments of the invention, the conducting polymer in step 18 can be polyaniline, thiophene or poly-3,4-rthylene dioxythiophene, etc.
Particularly, in one embodiment of the present of invention, a kind of concrete steps of the method for manufacturing Fabrication of High Specific Capacitance electrode film are as follows:
1. graphene oxide is scattered in methyl alcohol/deionization solution, the concentration of graphene oxide material is 10-20mg/ml, is formed for the graphene oxide dispersion liquid of LB film preparation;
2. adopt microsyringe to extract the 1. middle nano structural material dispersion liquid obtaining of 800-1200 μ l, be added on deionized water surface in LB film groove, graphene oxide sprawls and forms orderly layer (film) at gas/liquid interface;
3. control the sliding speed compression graphene oxide film hindering with 0.5-2 mm/min (mm/min) of LB film device and arrive mould 18-25 MN/m (mN/m), the mode of the horizontal film forming of employing is transferred to graphene oxide on substrate, and rate of film build is 0. 05 ~ 0.1 mm/min (mm/min);
4. the substrate that has deposited graphene oxide film is placed in to the closed environment that contains steam and reduces, ambient temperature is 180-210 ℃, and the processing time is 80-120 minute;
5. the substrate 4. obtaining is inserted in electrochemical cell, adopt electrochemical deposition method depositing metal oxide on redox graphene.
6. the substrate 5. obtaining is inserted in vapour deposition cavity, adopt method depositing electrically conductive polymer on metal oxide of chemical vapour deposition (CVD).
By 1.-6. step has obtained a kind of Fabrication of High Specific Capacitance electrode film of redox graphene/metal oxide/conducting polymer.
Several concrete examples below.
Example 1:
1. graphene oxide is scattered in methyl alcohol/deionization solution, the concentration of graphene oxide is 18mg/ml, is formed for the graphene oxide dispersion liquid of LB film preparation;
2. adopt microsyringe to extract the graphene oxide solution that 1. 1000 μ l obtain, be added on deionized water surface in LB film groove, order thin film is sprawled and formed to graphene oxide at gas/liquid interface;
3. control the sliding speed compression graphene oxide film hindering with 1 mm/min of LB film device and arrive mould 20 mN/m, the mode of the horizontal film forming of employing is transferred to graphene oxide film on substrate, and rate of film build is 0.05 mm/min;
4. the substrate that has deposited graphene oxide film is placed in to the water vapor atmosphere 100 minutes of 200 ℃, graphene oxide is reduced;
5. the substrate 4. obtaining is put to electrochemical deposition manganese dioxide in electrochemical cell;
6. the substrate 5. obtaining is placed in to vapour deposition cavity, adopts the method depositing electrically conductive polymer poly aniline of chemical gaseous phase aggregation deposition.
By 1.-6. step has obtained a kind of Fabrication of High Specific Capacitance electrode film of redox graphene/manganese dioxide/polyaniline.
Example 2:
In example 2, metal oxide is ruthenic oxide, similar in all the other materials and manufacturing process and enforcement 1, thereby obtains the Fabrication of High Specific Capacitance electrode film of redox graphene/ruthenic oxide/polyaniline.
Example 3:
In example 3, conducting polymer is polythiophene, similar in all the other materials and manufacturing process and enforcement 1, thereby obtains the Fabrication of High Specific Capacitance electrode film of redox graphene/manganese dioxide/polythiophene.
Example 4:
In example 4, metal oxide is vanadium dioxide, similar in all the other materials and manufacturing process and enforcement 1, thereby obtains the Fabrication of High Specific Capacitance electrode film of redox graphene/vanadium dioxide/polyaniline.
Example 5:
In example 5, metal oxide is vanadium dioxide, and conducting polymer is poly-3,4-ethene dioxythiophene, similar in all the other materials and manufacturing process and enforcement 1, thus the Fabrication of High Specific Capacitance electrode film of acquisition redox graphene/vanadium dioxide/poly-3,4-rthylene dioxythiophene.
Fig. 2 is the schematic diagram of the structure of the Fabrication of High Specific Capacitance electrode film manufactured of the method according to one embodiment of present invention, and wherein 1 is flexible ITO, and 2 is redox graphene, and 3 is metal oxide, and 4 is conducting polymer.
As seen from Figure 2, the Fabrication of High Specific Capacitance electrode film in the embodiment of the present invention comprises substrate, redox graphene layer, metal oxide layer and conductive polymer coating.Wherein, redox graphene layer is formed on substrate; Metal oxide layer is formed on redox graphene layer; Conductive polymer coating is formed on metal oxide layer.
In embodiments of the invention, metal oxide can be manganese dioxide, ruthenic oxide or vanadium dioxide.
In embodiments of the invention, conducting polymer can be polyaniline, polythiophene or poly-3,4-rthylene dioxythiophene.
In the method for the manufacture Fabrication of High Specific Capacitance electrode film that the embodiment of the present invention provides, first graphene oxide obtains tight ordered arrangement by LB embrane method, and the fine and close arrangement architecture of this graphene oxide can guarantee that electrode film has great specific area to increase specific capacity.Then by electrochemistry and chemical gaseous phase aggregation deposition method, on graphene oxide surface, form metal oxide and conducting polymer superthin layer, the introducing of bi-material can, so that electrode film has electric double layer capacitance and fake capacitance simultaneously, increase the specific capacity of electrode film greatly.In addition, because metal oxide and conducting polymer are to be deposited on redox graphene surface, the possibility of conducting polymer generation fold and deformation in electrode charge and discharge process can be effectively reduced, conservation rate and the stability of electrode capacity can be effectively guaranteed.Therefore, redox graphene/metal oxide/conducting polymer combination electrode has that specific capacity is high, the feature of good stability.And this manufacture method is rationally simple, easy operating.
The laminated film of the method manufacture of embodiments of the invention can be given full play to the synergy between carbon nano-structured material and metal oxide and conducting polymer, realize electrolyte ion at the quick adsorption/desorption of electrode surface, this film can large area deposit, and can be prepared in the manufacture that flexible super capacitor is realized on flexible substrates surface.
By specific embodiment, describe the present invention above, but the present invention is not limited to these specific embodiments.It will be understood by those skilled in the art that and can also make various modifications to the present invention, be equal to replacement, change etc., these conversion, all should be within protection scope of the present invention as long as do not deviate from spirit of the present invention.In addition, " embodiment " described in above many places represents different embodiment, can certainly be by its all or part of combination in one embodiment.

Claims (10)

1. a method of manufacturing Fabrication of High Specific Capacitance electrode film, is characterized in that, comprising:
Steps A: graphene oxide dispersion of materials, in organic solvent, is obtained to graphene oxide dispersion liquid;
Step B: described graphene oxide dispersion liquid is spread in to the deionized water surface in LB film groove, and adopt LB film build method that graphene oxide is shifted and is deposited into substrate surface;
Step C: described on-chip graphene oxide is reduced to redox graphene;
Step D: use electrochemical deposition method at described redox graphene surface deposition metal oxide;
Step e: with chemical gaseous phase depositing process depositing electrically conductive polymer on described metal oxide layer.
2. the method for claim 1, is characterized in that, described step C comprises: the described substrate that has deposited described graphene oxide is placed in to the high-temperature closed environment that contains steam and reduces.
3. method as claimed in claim 2, is characterized in that: the temperature of described high-temperature closed environment is 190 to 210 degrees Celsius.
4. the method for claim 1, is characterized in that: described metal oxide is manganese dioxide, ruthenic oxide or vanadium dioxide.
5. the method for claim 1, is characterized in that: described conducting polymer is polyaniline, polythiophene or poly-3,4-rthylene dioxythiophene.
6. the method for claim 1, is characterized in that: described substrate is tin indium oxide or aluminium foil.
7. the method for claim 1, is characterized in that: described organic solvent is the deionized water solution of methyl alcohol or isopropyl alcohol.
8. a Fabrication of High Specific Capacitance electrode film, is characterized in that, comprising:
Substrate;
Redox graphene layer, described redox graphene layer is formed on described substrate;
Metal oxide layer, described metal oxide layer is formed on described redox graphene layer;
Conductive polymer coating, described conductive polymer coating is formed on described metal oxide layer.
9. Fabrication of High Specific Capacitance electrode film as claimed in claim 9, is characterized in that: described metal oxide is manganese dioxide, ruthenic oxide or vanadium dioxide.
10. method as claimed in claim 9, is characterized in that: described conducting polymer is polyaniline, polythiophene or poly-3,4-rthylene dioxythiophene.
CN201310694326.4A 2013-12-18 2013-12-18 High-specific-volume electrode thin film and manufacturing method thereof Pending CN103680994A (en)

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CN105118681A (en) * 2015-08-17 2015-12-02 电子科技大学 A method for manufacturing a graphene -based ternary composite flexible electrode
CN105448533A (en) * 2014-12-19 2016-03-30 中国科学院福建物质结构研究所 Combined electrode, preparation method thereof and application in super capacitor
CN106158364A (en) * 2015-04-22 2016-11-23 陈锦棠 Chemical deposition produces the technology of super accumulator
CN107522195A (en) * 2017-09-27 2017-12-29 华东师范大学 A kind of preparation method of graphene hetero-junctions
CN109698318A (en) * 2018-12-27 2019-04-30 清远佳致新材料研究院有限公司 One kind being based on MnO2The positive plate and preparation method of the lithium ion battery of-PEDOT
CN110518258A (en) * 2019-08-13 2019-11-29 武汉长海电力推进和化学电源有限公司 A kind of combination electrode plate and preparation method applied to fuel cell
CN110600274A (en) * 2019-09-06 2019-12-20 广东工业大学 Metal oxide/conductive polymer cross flower array and preparation method thereof
CN111006800A (en) * 2019-12-23 2020-04-14 浙江清华柔性电子技术研究院 Flexible pressure sensor and preparation method thereof

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GB2523173A (en) * 2014-02-17 2015-08-19 Nokia Technologies Oy An apparatus and associated methods
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CN104409222A (en) * 2014-11-21 2015-03-11 华东理工大学 Preparation method for ternary composites of graphene/manganese dioxide nanosheet /polyaniline nanorod
CN105448533A (en) * 2014-12-19 2016-03-30 中国科学院福建物质结构研究所 Combined electrode, preparation method thereof and application in super capacitor
CN106158364A (en) * 2015-04-22 2016-11-23 陈锦棠 Chemical deposition produces the technology of super accumulator
CN105118681A (en) * 2015-08-17 2015-12-02 电子科技大学 A method for manufacturing a graphene -based ternary composite flexible electrode
CN107522195A (en) * 2017-09-27 2017-12-29 华东师范大学 A kind of preparation method of graphene hetero-junctions
CN109698318A (en) * 2018-12-27 2019-04-30 清远佳致新材料研究院有限公司 One kind being based on MnO2The positive plate and preparation method of the lithium ion battery of-PEDOT
CN109698318B (en) * 2018-12-27 2021-07-06 清远佳致新材料研究院有限公司 Based on MnO2Positive plate of lithium ion battery of PEDOT and preparation method
CN110518258A (en) * 2019-08-13 2019-11-29 武汉长海电力推进和化学电源有限公司 A kind of combination electrode plate and preparation method applied to fuel cell
CN110600274A (en) * 2019-09-06 2019-12-20 广东工业大学 Metal oxide/conductive polymer cross flower array and preparation method thereof
CN110600274B (en) * 2019-09-06 2022-01-11 广东工业大学 Metal oxide/conductive polymer cross flower array and preparation method thereof
CN111006800A (en) * 2019-12-23 2020-04-14 浙江清华柔性电子技术研究院 Flexible pressure sensor and preparation method thereof

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