A preparation method of graphene coating resistant to acidic medium corrosion in fuel cells

An acid medium, fuel cell technology, applied in fuel cell parts, fuel cells, metal material coating process, etc. Improve density, reduce contact resistance, good spray effect

Active Publication Date: 2021-05-28
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 difficulties. Applying a single corrosion-resistant and conductive coating may be difficult to meet the requirements of PEMFC.
Nickel-based alloys are not competitive for commercial applications due to higher cost

Method used

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  • A preparation method of graphene coating resistant to acidic medium corrosion in fuel cells
  • A preparation method of graphene coating resistant to acidic medium corrosion in fuel cells
  • A preparation method of graphene coating resistant to acidic medium corrosion in fuel cells

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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, in particular to a method for preparing a graphene coating resistant to acidic medium corrosion in fuel cells, L1. metal bipolar plate substrate polishing; L2. putting the polished metal bipolar plate substrate into Ultrasonic cleaning tank cleaning; L3. Put the metal bipolar plate substrate after ultrasonic cleaning on the substrate turntable, and pass in argon gas to perform glow discharge cleaning on the surface of the metal bipolar plate substrate; L4. The metal bipolar plate substrate after discharge cleaning is glued through the polymer conductive glue solution pool; L5. The graphene powder is evenly adsorbed on the surface of the metal bipolar plate substrate through the graphene carbon powder spraying system; L6. The metal bipolar plate substrate is placed in a multi-layer plate storage cabinet. Through the method of this application, a multi-layer composite microstructure and a large amount of amorphous structure are formed on the surface of the metal bipolar plate substrate, which not only improves the density of the coating, but also prevents the corrosive medium from infiltrating into the coating, greatly improving the resistance of the coating. corrosion performance.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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