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Preparation method of anti-corrosion fuel cell separation plate

A fuel cell and corrosion-resistant technology, applied in fuel cells, circuits, electrical components, etc., can solve problems such as increased contact resistance between current collector and catalytic layer, limited battery use, limited oxide stable area, etc.

Inactive Publication Date: 2019-05-10
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above existing technologies involve a limited oxide stable area, the use of the battery will be limited, and the conductivity of the oxide is not good, which will also cause an increase in the contact resistance between the current collector and the catalytic layer.

Method used

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  • Preparation method of anti-corrosion fuel cell separation plate
  • Preparation method of anti-corrosion fuel cell separation plate
  • Preparation method of anti-corrosion fuel cell separation plate

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Embodiment 1

[0029] Step 1. Select a copper-based alloy as the separator, and ultrasonically clean it in acetone, absolute ethanol, and deionized water for 15 minutes in order to remove the oil stains left on the surface due to processing.

[0030] Step 2: Prepare a 1mol / L ammonium persulfate solution, ultrasonically clean the separator in the solution for 20 minutes, take out the separator, rinse it with deionized water, and dry it in a nitrogen atmosphere.

[0031] Step 3: Introduce argon gas into the reaction furnace of chemical vapor deposition, the flow rate of argon gas is 500 sccm, and last for 10 minutes, and transfer the dried partition to the reaction furnace, turn on the vacuum pump, and carry out vacuuming until the degree of vacuum is reduced to When it is below 1.0Pa, proceed to the next step, during which the vacuum pump remains on.

[0032] Step 4. Replace the argon in the reaction furnace with hydrogen. The flow rate of hydrogen is 10 sccm for 30 minutes. Set the temperatu...

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Abstract

The invention relates to a preparation method of an anti-corrosion anti-flaming fuel cell separation plate. The method is characterized by comprising the specific steps of: cleaning the separation plate; configuring 1-5 mol / L of ammonium persulfate solution; and entering a temperature rise stage, an annealing stage, a graphene growth stage and a cooling stage, and when the temperature is reduced to a room temperature condition, stopping importing hydrogen and carbon source gas, importing argon at a flow of 500 sccm, and closing a vacuum pump for 10-20 min until the pressure in the cavity of areaction furnace achieves normal pressure, so as to obtain the anti-corrosion fuel cell separation plate. the separation plate has an anti-corrosion function.

Description

technical field [0001] The invention relates to the technical field of fuel cell production, in particular to a method for preparing a separator of a corrosion-resistant fuel cell. Background technique [0002] A fuel cell is a clean energy conversion device that directly converts chemical energy into electrical energy, in which current collectors and separators are important components of hydrogen-oxygen fuel cells. The current collector and the separator are usually on the outside of the cathode and anode, which can play the role of supporting the catalytic layer and collecting current. Current collectors and separators are usually made of graphite and metal. Among them, graphite electrodes and graphite separators have better corrosion resistance, but their mechanical processing performance is relatively poor, and the shock resistance is not good, so graphite is rarely used as separators. processing. The use of metal collector separators can make full use of the excellen...

Claims

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Application Information

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IPC IPC(8): H01M8/0213H01M8/0228
CPCY02E60/50
Inventor 汪宏斌朱一方刘立起秦子威陈卓周科
Owner SHANGHAI UNIV