CN106935416A - A kind of starfish shape δ MnO2The preparation method of nanometer sheet/carbon fiber paper combination electrode material - Google Patents

A kind of starfish shape δ MnO2The preparation method of nanometer sheet/carbon fiber paper combination electrode material Download PDF

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Publication number
CN106935416A
CN106935416A CN201710013930.4A CN201710013930A CN106935416A CN 106935416 A CN106935416 A CN 106935416A CN 201710013930 A CN201710013930 A CN 201710013930A CN 106935416 A CN106935416 A CN 106935416A
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carbon fiber
electrode material
fiber paper
combination electrode
nanometer sheet
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CN201710013930.4A
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CN106935416B (en
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余林
徐斌
何彬彬
杨泽超
程高
孙明
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Guangdong University of Technology
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Guangdong University of Technology
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/84Processes for the manufacture of hybrid or EDL capacitors, or components thereof
    • H01G11/86Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/24Electrodes characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity; characterised by the structural features of powders or particles used therefor
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/30Electrodes characterised by their material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/30Electrodes characterised by their material
    • H01G11/32Carbon-based
    • H01G11/40Fibres
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/30Electrodes characterised by their material
    • H01G11/46Metal oxides
    • 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/13Energy storage using capacitors

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention belongs to Inorganic Non-metallic Materials preparation field, more particularly to a kind of starfish shape δ MnO2The preparation method of nanometer sheet/carbon fiber paper combination electrode material.It is sufficiently mixed dissolving in aqueous with the sulphite of soluble manganese salt and solubility, will clean and dried carbon fiber paper immerses above-mentioned mixed solution, and by hydro-thermal reaction, washing obtains starfish shape δ MnO after drying2Nanometer sheet/carbon fiber paper combination electrode material.The raw material of preparation method of the present invention is cheap and easy to get, synthesis technique is simple and easy to apply, preparation cost is low, contamination-free is produced, products therefrom novel in shape, and is closely grown on the fiber rod of carbon fiber paper.Synthesized manganese dioxide, the diameter of its extra large star topology between 300~500nm, the thickness of starfish shape nanometer sheet between 10~30nm, and synthesized material be uniformly dispersed, pattern it is homogeneous, the electrode material of ultracapacitor can be directly used as.In 1mol/L NaSO4In electrolyte, when current density is 1A/g, the specific capacitance value of gained combination electrode material is up to 336F/g.

Description

A kind of starfish shape δ-MnO2The preparation method of nanometer sheet/carbon fiber paper combination electrode material
Technical field
The invention belongs to Inorganic Non-metallic Materials preparation field, more particularly to a kind of starfish shape δ-MnO2Nanometer sheet/carbon fiber The preparation method of paper combination electrode material.
Background technology
Ultracapacitor is due to its power density high, fast charge-discharge velocity, the cycle life of length and more traditional electricity Container energy density higher and as very important energy storage device of future generation, increasingly paid close attention to by people.Super electricity The performance of container depends primarily on electrode material, and report mainly includes carbon material, metal as electrode material for super capacitor Oxide/hydroxide and conducting polymer materials, among various materials, manganese dioxide is due to its unique physical chemistry Matter should widely be made catalyst, magnetic material, lithium ion battery and ultracapacitor.Particularly, manganese dioxide is because its valency Lattice are cheap, raw material resources are abundant, environment-friendly and up to 1370F/g theoretical specific volume and be considered as very promising super The electrode material of level capacitor.
The chemical property of electrode material largely be subject to themselves crystal structure, size, dimension, especially It is the influence of appearance structure, because these factors can largely influence the electric conductivity and structural stability of electrode material And electrolyte ion is in the diffusion rate of electrode material surface.In the manganese dioxide of different-shape, three-dimensional sheet structure Manganese dioxide is received significant attention because it is generally configured with preferable chemical property.
But, material of the synthesis with three-dimensional appearance is difficult in the case of without any template or surfactant Material.At present, prepare the manganese dioxide of starfish shape nanometer sheet pattern using a step Hydrothermal Synthesiss there is not been reported.
The content of the invention
The present invention prepares starfish shape δ-MnO by a step hydrothermal synthesis method2Nanometer sheet/carbon fiber paper combination electrode material Material.
The present invention provides a kind of starfish shape δ-MnO2The preparation method of nanometer sheet/carbon fiber paper combination electrode material, it is special Levy and be:Soluble potassium permanganate and sulphite are fully dissolved in aqueous;To clean and dried carbon fiber Paper carries out hydro-thermal reaction in being immersed in above-mentioned mixed solution, after question response is complete, will obtain final product purpose after products therefrom washing, drying Product.
Above-mentioned sulphite is one or two mixture of potassium sulfite or sodium sulfite.
Above-mentioned soluble potassium permanganate and the mol ratio of soluble sulphite are 1:1.5.
Above-mentioned hydrothermal temperature is 100~160 DEG C, and the hydro-thermal reaction time is 18~36h.
Above-mentioned drying temperature is 70 DEG C, and drying time is 12h.
The present invention possesses following beneficial effect:
(1) raw material of preparation method provided by the present invention is cheap and easy to get, aboundresources, and synthesis technique is simple and easy to apply, closes Into product quality stabilization and good process repeatability.
(2) the starfish shape manganese dioxide nano-plates array structure for having prepared novelty of the invention, and synthesized material Size is more homogeneous, be uniformly dispersed, and any template or surfactant need not be added in building-up process.
(3) when the starfish shape manganese dioxide nano-plates prepared by the present invention do electrode of super capacitor, in 1A/g electric currents Its specific capacitance value is up to 336F/g under density.
Brief description of the drawings
Fig. 1 is that the X-ray of the starfish shape manganese dioxide nano-plates/carbon fiber paper combination electrode material prepared by the present invention is spread out Penetrate figure.
Fig. 2 is the scanning electricity of the starfish shape manganese dioxide nano-plates/carbon fiber paper combination electrode material prepared by the present invention Mirror figure.
Fig. 3 is the scanning electricity of the starfish shape manganese dioxide nano-plates/carbon fiber paper combination electrode material prepared by the present invention Mirror figure.
Fig. 4 is the scanning electricity of the starfish shape manganese dioxide nano-plates/carbon fiber paper combination electrode material prepared by the present invention Mirror figure.
Fig. 5 is the scanning electricity of the starfish shape manganese dioxide nano-plates/carbon fiber paper combination electrode material prepared by the present invention Mirror figure.
Fig. 6 is the circulation volt of the starfish shape manganese dioxide nano-plates/carbon fiber paper combination electrode material prepared by the present invention Peace performance diagram.
Fig. 7 is the constant current of the starfish shape manganese dioxide nano-plates/carbon fiber paper combination electrode material prepared by the present invention Charging and discharging curve figure.
Specific embodiment
The present invention is illustrated in detail with reference to the accompanying drawings and examples.
Used reagent in following embodiments, unless otherwise specified, is the pure level of analysis.
Embodiment 1
1mmol potassium permanganate, 1.5mmol potassium sulfites are dissolved in 30ml distilled water first, magnetic agitation is extremely at room temperature It is completely dissolved;Then, the mixed solution is transferred in the autoclave of 50mL polytetrafluoroethyllining linings, takes and a piece of wash in advance Net and dried carbon fiber paper, is dipped in aforesaid reaction vessel;Finally, reactor is placed in 120 DEG C of thermostatic drying chambers Reaction 24h.After question response terminates, room temperature is naturally cooled to, the carbon fiber paper in reactor is taken out, with deionized water and anhydrous second Alcohol intersection supersound washing is dried in putting it into 70 DEG C of drying boxes for several times, finally, obtains the two of the starfish shape nanometer chip architecture Manganese oxide/carbon fiber combination electrode material.Products therefrom crystal formation is δ-MnO by X-ray powder diffraction analysis result2, X-ray Diffraction patterns are as shown in Figure 1;Products therefrom pattern can be understood as shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, in figure and be seen by electronic microscope photos Observe the manganese dioxide of finely dispersed starfish shape nanometer chip architecture;The chemical property of products therefrom leads under three-electrode system Electrochemistry heart performance evaluation is crossed, under 1A/g current densities, its specific capacitance value is up to 336F/g.
Embodiment 2
1mmol potassium permanganate, 1.5mmol potassium sulfites are dissolved in 30ml distilled water first, magnetic agitation is extremely at room temperature It is completely dissolved;Then, the mixed solution is transferred in the autoclave of 50mL polytetrafluoroethyllining linings, takes and a piece of wash in advance Net and dried carbon fiber paper, is dipped in aforesaid reaction vessel;Finally, reactor is placed in 140 DEG C of thermostatic drying chambers Reaction 18h.After question response terminates, room temperature is naturally cooled to, the carbon fiber paper in reactor is taken out, with deionized water and anhydrous second Alcohol intersection supersound washing is dried in putting it into 70 DEG C of drying boxes for several times, finally, obtains the two of the starfish shape nanometer chip architecture Manganese oxide/carbon fiber combination electrode material.Products therefrom understands that it is starfish shape through X-ray powder diffraction, scanning electron microscope analysis δ-the MnO of nanometer chip architecture2, specific capacitance of the product under 1A/g current densities is 310F/g.
Embodiment 3
1mmol potassium permanganate, 1.5mmol sodium sulfites are dissolved in 30ml distilled water first, magnetic agitation is extremely at room temperature It is completely dissolved;Then, the mixed solution is transferred in the autoclave of 50mL polytetrafluoroethyllining linings, takes and a piece of wash in advance Net and dried carbon fiber paper, is dipped in aforesaid reaction vessel;Finally, reactor is placed in 120 DEG C of thermostatic drying chambers Reaction 24h.After question response terminates, room temperature is naturally cooled to, the carbon fiber paper in reactor is taken out, with deionized water and anhydrous second Alcohol intersection supersound washing is dried in putting it into 70 DEG C of drying boxes for several times, finally, obtains the two of the starfish shape nanometer chip architecture Manganese oxide/carbon fiber combination electrode material.Products therefrom understands that it is starfish shape through X-ray powder diffraction, scanning electron microscope analysis δ-the MnO of nanometer chip architecture2, specific capacitance of the product under 1A/g current densities is 333F/g.
Embodiment 4
1mmol potassium permanganate, 1.5mmol sodium sulfites are dissolved in 30ml distilled water first, magnetic agitation is extremely at room temperature It is completely dissolved;Then, the mixed solution is transferred in the autoclave of 50mL polytetrafluoroethyllining linings, takes and a piece of wash in advance Net and dried carbon fiber paper, is dipped in aforesaid reaction vessel;Finally, reactor is placed in 120 DEG C of thermostatic drying chambers Reaction 24h.After question response terminates, room temperature is naturally cooled to, the carbon fiber paper in reactor is taken out, with deionized water and anhydrous second Alcohol intersection supersound washing is dried in putting it into 70 DEG C of drying boxes for several times, finally, obtains the two of the starfish shape nanometer chip architecture Manganese oxide/carbon fiber combination electrode material.Products therefrom understands that it is starfish shape through X-ray powder diffraction, scanning electron microscope analysis δ-the MnO of nanometer chip architecture2, specific capacitance of the product under 1A/g current densities is 305F/g.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously Therefore the limitation to the scope of the claims of the present invention can not be interpreted as, as long as being obtained in the form of equal replacement or equivalent transformation Technical scheme, all should fall within the scope and spirit of the invention.

Claims (5)

1. a kind of starfish shape δ-MnO2The preparation method of nanometer sheet/carbon fiber paper combination electrode material, it is characterised in that:Will be solvable Property potassium permanganate and solubility sulphite be sufficiently mixed dissolving in aqueous;To clean and dried carbon fiber paper Being immersed in above-mentioned mixed solution carries out hydro-thermal reaction, after question response is complete, will products therefrom washing, dry after obtain final product purpose product Thing.
2. a kind of starfish shape δ-MnO according to claim 12The preparation side of nanometer sheet/carbon fiber paper combination electrode material Method, it is characterised in that:The soluble sulphite is one or two mixture of potassium sulfite or sodium sulfite.
3. a kind of starfish shape δ-MnO according to claim 22The preparation side of nanometer sheet/carbon fiber paper combination electrode material Method, it is characterised in that:The mol ratio of the soluble potassium permanganate and soluble sulphite is 1:1.5.
4. a kind of starfish shape δ-MnO according to claim 32The preparation side of nanometer sheet/carbon fiber paper combination electrode material Method, it is characterised in that:The hydrothermal temperature is 100~160 DEG C, and the hydro-thermal reaction time is 18~36h.
5. a kind of starfish shape δ-MnO according to claim 42The preparation side of nanometer sheet/carbon fiber paper combination electrode material Method, it is characterised in that:The drying temperature is 70 DEG C, and drying time is 12h.
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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN111986931A (en) * 2020-07-24 2020-11-24 华南理工大学 Manganese oxide nano-structure electrode material and preparation method and application thereof
CN112599764A (en) * 2020-12-28 2021-04-02 上海纳米技术及应用国家工程研究中心有限公司 Preparation method, product and application of ternary nanowire array @ carbon fiber
CN112981454A (en) * 2021-02-03 2021-06-18 山东大学 Manganese dioxide ultra-long nanowire catalyst with oxygen vacancy as well as preparation method and application thereof
CN114031125A (en) * 2021-11-05 2022-02-11 上海纳米技术及应用国家工程研究中心有限公司 Preparation method of ternary nanosheet @ carbon nanotube positive electrode material, product and application thereof

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111986931A (en) * 2020-07-24 2020-11-24 华南理工大学 Manganese oxide nano-structure electrode material and preparation method and application thereof
CN112599764A (en) * 2020-12-28 2021-04-02 上海纳米技术及应用国家工程研究中心有限公司 Preparation method, product and application of ternary nanowire array @ carbon fiber
CN112981454A (en) * 2021-02-03 2021-06-18 山东大学 Manganese dioxide ultra-long nanowire catalyst with oxygen vacancy as well as preparation method and application thereof
CN114031125A (en) * 2021-11-05 2022-02-11 上海纳米技术及应用国家工程研究中心有限公司 Preparation method of ternary nanosheet @ carbon nanotube positive electrode material, product and application thereof
CN114031125B (en) * 2021-11-05 2023-11-28 上海纳米技术及应用国家工程研究中心有限公司 Preparation method of ternary nano sheet@carbon nano tube anode material, product and application thereof

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