Preparation method of graphene coating capable of resisting acid medium corrosion in fuel cell

A technology for acidic media and fuel cells, which is applied to fuel cell parts, fuel cells, metal material coating processes, etc., can solve the problems of difficult to meet the conductive coating, high cost of nickel-based alloys, and difficult surface treatment, etc., to achieve Improve the density, reduce the contact resistance, good spraying effect

Active Publication Date: 2020-07-24
ZHEJIANG HAROG TECH CO LTD
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Problems solved by technology

[0007] According to the existing research results, although light metals such as aluminum or its alloys have advantages in improving the specific power of batteries, their surface treatment faces greater diff

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  • Preparation method of graphene coating capable of resisting acid medium corrosion in fuel cell
  • Preparation method of graphene coating capable of resisting acid medium corrosion in fuel cell
  • Preparation method of graphene coating capable of resisting acid medium corrosion in fuel cell

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Embodiment Construction

[0077] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0078] Such as figure 1 Shown, a kind of graphene coating preparation method of anti-acid medium corrosion in fuel cell, comprises

[0079] L1. Metal bipolar plate substrate polishing. Specifically, the metal bipolar plate substrate is sequentially polished with sandpaper and nylon so that the surface roughness of the metal bipolar plate substrate is not greater than 0.5 μm. This application only needs to be polished with sandpaper and nylon, and the pretreatment operation is very simple. save time and energy.

[0080] L2. Put the polished metal bipolar plate substrate into the ultrasonic cleaning tank for cleaning. Specifically, the polished metal bipolar plate substrate is placed in an ultrasonic cleaning pool filled with acetone and alcohol for cleaning for 15 minutes.

[0081] L3. Put the ul...

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Abstract

The invention relates to the technical field of material surface treatment, and in particular relates to a preparation method of a graphene coating capable of resisting acid medium corrosion in a fuelcell. The preparation method comprises the steps of L1 polishing a metal bipolar plate substrate; L2 placing the polished metal bipolar plate substrate into an ultrasonic cleaning pool to be cleaned;L3 placing the metal bipolar plate substrate subjected to ultrasonic cleaning on a substrate rotating stand, and introducing argon to perform glow discharge cleaning on the surface of the metal bipolar plate substrate; L4 gluing the metal bipolar plate substrate subjected to glow discharge cleaning through a polymer conductive adhesive solution pool; L5 evenly adsorbing graphene powder to the surface of the metal bipolar plate substrate through a graphene carbon powder spraying system; and L6 placing the metal bipolar plate substrate with the graphene powder layer in a multi-layer polar plateplacing cabinet. According to the method, a multi-layer composite microstructure and a large number of amorphous structures are formed on the surface of the metal bipolar plate substrate, so that thedensity of the coating is improved, a corrosive medium can be prevented from immersing into the coating, and the corrosion resistance of the coating is greatly improved.

Description

technical field [0001] The invention relates to the technical field of material surface treatment, in particular to a method for preparing a graphene coating resistant to acidic medium corrosion in fuel cells. Background technique [0002] The 21st century will be the century of hydrogen energy. With the maturity of underground coal gasification hydrogen production and metal alloy hydrogen storage technologies, fuel cells, as efficient and clean power generation devices that directly and continuously convert hydrogen energy into electrical energy, will soon enter the society on a large scale. It is expected that by 2021, more than 30% of electricity will be supplied by fuel cells. [0003] A fuel cell is a power generation device that directly converts the chemical energy of fuel into electrical energy by electrochemical reaction without combustion. It is a new technology that uses energy efficiently without polluting the environment. There are many types of fuel cells, cla...

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Application Information

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IPC IPC(8): H01M8/0206H01M8/0213H01M8/0228C23C26/00
CPCC23C26/00H01M8/0206H01M8/0213H01M8/0228Y02E60/50
Inventor 许琳媛
Owner ZHEJIANG HAROG TECH CO LTD
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