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Preparation method of polyaniline-base composite coating applied to stainless steel bipolar plate

A polyaniline-based, composite coating technology, applied in the fields of new energy, electrochemistry and material science, can solve the problems of weakening the durability of PANI coating, reducing the shielding effect of corrosive ions, etc., to achieve excellent corrosion protection performance, improve the use of Effects of life and power output, excellent corrosion resistance and durability

Pending Publication Date: 2021-09-17
EAST CHINA UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

The preparation of conductive polymer coatings by electrodeposition is simpler and more efficient than chemical oxidation, and the deposition process is more controllable, but the surface of the prepared PANI coatings often has micron-scale pores, which reduces the shielding effect on corrosive ions and weakens the Durability of PANI Coating

Method used

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  • Preparation method of polyaniline-base composite coating applied to stainless steel bipolar plate
  • Preparation method of polyaniline-base composite coating applied to stainless steel bipolar plate
  • Preparation method of polyaniline-base composite coating applied to stainless steel bipolar plate

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Embodiment

[0026] Examples: A method for preparing high resistance, conductive polyaniline-polypyrrole-nano-titanium dioxide composite coating includes the steps of:

[0027] (1) Take 0.3 mol of anhydrous oxycaric acid, 0.1 mol 胺 monomer, 0.04 mol pyrrole monomer in 1 L deion water, to obtain an aniline-pyrrole solution; nano-titanium dioxide particles having a 1 g particle diameter of 5-10 nm Add aniline-pyrrole In the solution, 100 mg of sodium dodecyl sulfonate was added, and the magnetic stirrer was placed, and then the container was sealed with a tape; ultrasonic 10min, subsequently dispersed by magnetic stirring, stirring for 3 h to obtain an electrolyte;

[0028] (3) 316L stainless steel tie up to 10cm × 10 cm size, including 600 mesh, 1200 mesh, 2400 glutinous silica sandpaper, polished to scratch, mirror effect, then use acetone ethanol volume ratio 1: 1 Mixed solution Ultrasound washed 10 min; a 316L stainless steel tie after the squeezed 316L stainless steel is 1 cm × 1 cm size, a...

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Abstract

The invention relates to a preparation method of a high-corrosion-resistance and high-conductivity conductive polymer composite coating applied to a stainless steel bipolar plate of a proton exchange membrane fuel cell. The method comprises the following steps of preparing an aniline-pyrrole mixed solution, adding nano titanium dioxide particles and fully dispersing, preparing an electrolyte, and pretreating a stainless steel base material; and compounding and electrodepositing the polyaniline-base composite coating on the surface of stainless steel. The polyaniline-base composite coating has excellent corrosion resistance and stability and good conductivity, the use efficiency of the proton exchange membrane fuel cell can be improved, the service life of the proton exchange membrane fuel cell can be prolonged, the process is simple, the raw material cost is low, and the coating is suitable for industrial grade production.

Description

Technical field [0001] The present invention relates to a method of preparing a polyaniline-based composite coating applied to a stainless steel bipolar plate, mainly involving a high corrosion resistant, highly conductive polyaniline group applied to a proton exchange membrane fuel cell stainless steel bipolar plate. Preparation method of coating. It belongs to the field of new energy, electrochemical and material science. Background technique [0002] Development of hydrogen energy technology helps energy conservation and emission reduction, improve energy utilization and reduce the dependence of fossil energy, proton exchange membrane fuel cell is an important terminal of hydrogen energy, high power density, fast start, low operating temperature, overall efficiency The advantages of relatively high, zero emissions have been widely used in various fields such as traffic, electricity, and has been widely studied and supported by various countries. [0003] The bipolar plate is t...

Claims

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Application Information

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IPC IPC(8): C25D15/00H01M8/0221H01M8/021H01M8/0228
CPCC25D15/00H01M8/0221H01M8/021H01M8/0228Y02P70/50Y02E60/50
Inventor 栾伟玲毛韬博付青青陈浩峰
Owner EAST CHINA UNIV OF SCI & TECH
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