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A kind of preparation method of MNO2/porous carbon film/nickel composite material

A technology of composite materials and porous carbon, which is applied in hybrid capacitor electrodes, structural parts, electrical components, etc., can solve the problems of complex preparation process, harsh experimental conditions, and fragile films, and meet the requirements of low environmental conditions and high product quality. Stable, easily repeatable results

Inactive Publication Date: 2018-08-21
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the above defects or improvement needs of the prior art, the present invention provides an integrated MnO 2 / PCF / Ni composite material preparation method, its purpose is, at first form one deck penetration layer and graphene layer on metal Ni surface, then graphene layer is peeled off, then penetration layer becomes porous carbon layer, on porous carbon layer Generate MnO 2 thin film, making the MnO 2 The combination of thin film and porous carbon layer is firm, thus solving the problem of complex process, high cost, harsh experimental conditions and MnO 2 The technical problem that the film is fragile and easy to fall off

Method used

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  • A kind of preparation method of MNO2/porous carbon film/nickel composite material
  • A kind of preparation method of MNO2/porous carbon film/nickel composite material
  • A kind of preparation method of MNO2/porous carbon film/nickel composite material

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preparation example Construction

[0037] figure 1 It is the integrated MnO provided by the embodiment of the present invention 2 The realization flowchart of / PCF / Ni composite material preparation method, as can be seen from the figure, the inventive method comprises the steps:

[0038] S1: Place the clean and dry nickel sheet in a heating furnace, and pass in an inert gas so that the nickel sheet is surrounded by an inert gas; the inert gas is at least one of argon or helium, and the flow rate of the inert gas is 50 sccm ~500 sccm.

[0039] S2: Raise the temperature of the heating furnace to 600°C to 1100°C, pass in the mixed gas of hydrogen and hydrocarbon, and keep it for 5min to 75min to form a permeable layer and a graphene layer covering the permeable layer, the permeable layer is made of carbon atoms infiltrated into Formed inside the nickel sheet, the graphene layer is obtained by the precipitation of carbon atoms permeated into the nickel sheet to the surface of the nickel sheet; the hydrocarbons ar...

Embodiment 1

[0051] S1: Put the clean and dry nickel sheet in a heating furnace, and pass in an inert gas so that the nickel sheet is surrounded by the inert gas. The inert gas is argon, and the flow rate of the inert gas is 500 sccm.

[0052] S2: Raise the temperature of the heating furnace to 1100°C, feed the mixed gas of hydrogen and hydrocarbons, and keep it for 75 minutes to form a permeable layer and a graphene layer covering the permeable layer, and the permeable layer is made of carbon atoms permeated into the interior of the nickel sheet Formed, the graphene layer is obtained by the precipitation of carbon atoms permeated into the nickel sheet to the surface of the nickel sheet. The hydrocarbon is a kind of methane. The flow rate of the hydrogen is 100 sccm. The flow rate of the hydrocarbons is 500 sccm.

[0053] S3: Cool down the heating furnace to take out the nickel sheet with a permeable layer and a graphene layer on the surface, and immerse the nickel sheet with a permeabl...

Embodiment 2

[0063] S1: The clean and dry nickel sheet is placed in a heating furnace, and an inert gas is introduced so that the nickel sheet is surrounded by the inert gas; the inert gas is helium, and the flow rate of the inert gas is 200 sccm.

[0064] S2: Raise the temperature of the heating furnace to 1000°C, feed a mixed gas of hydrogen and hydrocarbon, and keep it for 50 minutes to form a permeable layer and a graphene layer covering the permeable layer, the permeable layer is permeated by carbon atoms into the interior of the nickel sheet Formed, the graphene layer is obtained by the precipitation of carbon atoms penetrating into the nickel sheet to the surface of the nickel sheet; the hydrocarbon is ethane. The flow rate of the hydrogen is 80 sccm. The flow rate of the hydrocarbons is 400 sccm.

[0065] S3: Cool down the heating furnace to take out the nickel sheet with a permeable layer and a graphene layer on the surface, and immerse the nickel sheet with a permeable layer and...

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Abstract

The invention discloses a preparation method of a MnO2 / porous carbon film / nickel composite material, and belongs to the technical field of an MnO2 thin film. The preparation method comprises: S1, placing a clean and dry nickel plate in a heating furnace, and filling inert gas; S2, heating the heating furnace to 600 to 1,100 DEG C, and filling hydrogen and hydrocarbon mixed gas to form a pervious bed and a graphene layer covering the pervious bed; S3, taking out the nickel plate of which the surface is provided with the pervious bed and the graphene layer, and impregnating the nickel plate into corrosive liquid so as to change the pervious bed on the nickel plate into a porous carbon film layer, wherein impregnation time is 0.5h to 24h; and S4, at normal temperature and under normal pressure, placing the nickel plate in mixed solution of potassium permanganate and sulfuric acid, and impregnating the nickel plate for 2h to 48h. According to the method, the MnO2 thin film and a porous carbon layer are firmly bonded and are difficult to break and fall off. The method disclosed by the invention is simple in process, low in cost and good in effect. The prepared MnO2 / porous carbon film / nickel composite material can be directly applied.

Description

technical field [0001] The invention belongs to MnO 2 The field of thin film technology, more specifically, relates to an integrated MnO for supercapacitors 2 / PCF / Ni composite material preparation method. Background technique [0002] At present, with the depletion of fossil energy, energy storage devices have gradually attracted people's attention. Based on redox reactions, MnO 2 The material has superior electrochemical properties, high theoretical specific capacity, and is environmentally friendly and cost-effective. It has become one of the most promising electrode materials and is widely used in energy storage devices such as supercapacitors and lithium-ion batteries. [0003] Electrochemical deposition and hydrothermal method for the preparation of nanometer MnO 2( Such as nanosheets, nanospheres, hollow nanoparticles, nanowires and nanoporous frameworks, etc.) are the two most commonly used technologies. Nano MnO 2 It has a high specific surface area, thereby g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/26H01G11/30H01G11/46H01M4/36H01M4/50
CPCH01G11/26H01G11/30H01G11/46H01M4/362H01M4/50Y02E60/10
Inventor 刘雨昊魏合林胡明雷张敏
Owner HUAZHONG UNIV OF SCI & TECH
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