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Preparation method of graphene anticorrosive coating on stainless steel surface

A technology of anti-corrosion coating and graphene layer, which is applied in the direction of coating, metal material coating process, final product manufacturing, etc., can solve the problems of non-corrosion resistance, high-temperature fuel cells cannot have a long life, etc., and achieve the change of wettability , Remarkable anti-corrosion performance, simple and efficient method

Inactive Publication Date: 2017-05-31
HARBIN INST OF TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention aims to solve the problem that the existing stainless steel material is not corrosion-resistant in the acidic environment of the fuel cell, and cannot have a long service life in the high-temperature fuel cell, and provides a preparation method of a graphene anti-corrosion coating on the surface of stainless steel

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  • Preparation method of graphene anticorrosive coating on stainless steel surface
  • Preparation method of graphene anticorrosive coating on stainless steel surface

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specific Embodiment approach 1

[0025] Specific embodiment 1: The method for preparing a graphene anticorrosive coating on stainless steel surface described in this embodiment is carried out according to the following steps:

[0026] 1. Surface pretreatment of stainless steel:

[0027] Polish the stainless steel with metallographic sandpaper of 600 mesh, 1000 mesh and 1500 mesh in turn, and then ultrasonically clean the polished stainless steel with acetone, absolute ethanol and deionized water for 20 minutes to obtain pretreated stainless steel;

[0028] 2. Preparation of graphene oxide solution:

[0029] Dissolve graphene oxide in deionized water to obtain a graphene oxide solution with a concentration of 1 mg / mL to 10 mg / mL;

[0030] 3. Graphene oxide layer on the surface of stainless steel:

[0031] ① Take the pretreated stainless steel side as the dripping surface, and use 5μL / cm 2 ~20μL / cm 2 Use a spin coater to drop the graphene oxide aqueous solution with a concentration of 1mg / mL~10mg / mL on the pretreated stai...

specific Embodiment approach 2

[0043] Specific embodiment two: this embodiment is different from specific embodiment one in that the stainless steel mentioned in step one is 304 stainless steel, 316 stainless steel, 316L stainless steel or 321 stainless steel. Others are the same as the first embodiment.

specific Embodiment approach 3

[0044] Specific embodiment three: this embodiment is different from one of specific embodiments one or two in that in step two, graphene oxide is dissolved in deionized water to obtain a graphene oxide solution with a concentration of 1 mg / mL. Others are the same as the first or second embodiment.

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Abstract

The invention provides a preparation method of a graphene anticorrosive coating on a stainless steel surface, relates to a preparation method of an anticorrosive coating on a stainless steel surface and aims at solving the problems that an existing stainless steel material does not have corrosion resistance in an acid environment of a fuel cell and cannot have relatively long service life in the high-temperature fuel cell. The method comprises the steps of (1) pretreatment of the stainless steel surface; (2) preparation of an graphene oxide solution; (3) prearrangement of a graphene oxide layer on the stainless steel surface; (4) treatment of the graphene oxide layer on the stainless steel surface; and (5) vertical growth of in-situ graphene on the stainless steel surface, thereby completing the preparation method of the graphene anticorrosive coating on the stainless steel surface. The preparation method of the graphene anticorrosive coating on the stainless steel surface provided by the invention is used as the preparation method of the graphene anticorrosive coating on the stainless steel surface.

Description

Technical field [0001] The invention relates to a method for preparing an anticorrosive layer on the surface of stainless steel. Background technique [0002] In today's society, environmental and energy issues have become research hotspots, and the development and use of renewable, clean and environmentally friendly new energy is the key to its development. Therefore, fuel cell technology has become more and more widely used worldwide. A fuel cell is a power generation device that can efficiently convert fuel and oxidant directly into electrical energy through electrode reactions. This device has high energy density, fast startup speed, clean and pollution-free. The bipolar plate is an important functional component in the fuel cell. It needs to have the functions of reacting gas, current collecting and conducting, supporting the membrane electrode, and providing channels for the reacting gas. Stainless steel has become one of the commonly used bipolar plate materials for curr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0228C23C16/02C23C16/26C23C16/505
CPCC23C16/0272C23C16/26C23C16/505H01M8/0228Y02E60/50Y02P70/50
Inventor 亓钧雷刘瑜琳林景煌贾赫男费维栋冯吉才
Owner HARBIN INST OF TECH
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