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A kind of preparation method of fuel cell

A fuel cell, mass fraction technology, applied in fuel cells, circuits, electrical components, etc., can solve the problem of low proton conductivity

Active Publication Date: 2020-08-07
武汉长海电力推进和化学电源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome above-mentioned technical deficiencies, propose a kind of preparation method of fuel cell, to solve the problem that the proton conductivity of proton exchange membrane fuel cell is lower

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] Embodiments of the present invention provide a method for preparing a fuel cell, comprising the following steps:

[0017] (1) Fully dissolving polyaniline with a mass fraction of 25 to 28% in ethanol to obtain mixture A; fully dissolving polyvinyl chloride with a mass fraction of 13 to 17% in ethylene dichloride to obtain mixture B; Potassium chloride powder, phosphotungstic acid and polypropylene are mixed according to the mass ratio of 1:0.3~0.7:7~10 and then heated until the polypropylene is molten to obtain mixture C; The ratio is 1:1~5:8~15 and mixed evenly to obtain mixture D;

[0018] (2) dipping the carbon fiber paper in the water-soluble polyvinyl alcohol fiber and drying it at 20-100°C to obtain the carbon fiber paper whose surface is coated with the water-soluble polyvinyl alcohol fiber;

[0019] (3) Immerse the carbon fiber paper whose surface is coated with water-soluble polyvinyl alcohol fiber into the mixture D, then transfer it to a vacuum concentrator,...

Embodiment 1

[0028] Embodiment 1 of the present invention provides a method for preparing a fuel cell, comprising the following steps:

[0029] (1) polyaniline that is 25% by mass fraction is fully dissolved in ethanol to obtain mixture A; polyvinyl chloride that is 13% by mass fraction is fully dissolved in ethylene dichloride to obtain mixture B; mass fraction is 1 : 0.3:9 potassium chloride powder, phosphotungstic acid and polypropylene are mixed and heated until the polypropylene is in a molten state to obtain mixture C; mix mixture A, mixture B and mixture C according to the mass ratio of 1:1:8 Homogenously, mixture D is obtained;

[0030] (2) Immerse the carbon fiber paper in the water-soluble polyvinyl alcohol fiber for 2 seconds and pull it at a speed of 0.05 cm / s, then heat-treat the carbon fiber paper at 20°C for 5 minutes, repeat the above process once, and obtain a surface-coated water-soluble fiber after drying. Carbon fiber paper made of permanent polyvinyl alcohol fiber;

...

Embodiment 2

[0037] Embodiment 2 of the present invention provides a method for preparing a fuel cell, comprising the following steps:

[0038] (1) Polyaniline with a mass fraction of 28% is fully dissolved in ethanol to obtain a mixture A; polyvinyl chloride with a mass fraction of 17% is fully dissolved in ethylene dichloride to obtain a mixture B; the mass fraction is 1 : 0.7:10 potassium chloride powder, phosphotungstic acid and polypropylene are mixed and heated until the polypropylene is molten to obtain mixture C; mix mixture A, mixture B and mixture C according to the mass ratio of 1:5:15 Homogenously, mixture D is obtained;

[0039] (2) Immerse the carbon fiber paper in the water-soluble polyvinyl alcohol fiber for 2 seconds and pull it at a pulling speed of 0.5cm / s, then heat-treat the carbon fiber paper at 100°C for 0.5min, repeat the above process 20 times, and obtain a surface coating after drying Carbon fiber paper of water-soluble polyvinyl alcohol fiber;

[0040] (3) Imme...

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Abstract

The invention discloses a preparation method of a fuel cell. The preparation method comprises the steps that polyaniline with a mass fraction of 25-28% is fully dissolved in ethanol to obtain a mixture A; polyvinyl chloride with a mass fraction of 13-17% is fully dissolvied in dichloroethane to obtain a mixture B; potassium chloride powder, phosphotungstic acid and polypropylene are mixed at a mass ratio of 1:(0.3-0.7):(7-10) and then heated until the polypropylene is in a molten state to obtain a mixture C; the mixture A, the mixture B and the mixture C are mixed evenly according to a mass ratio of 1:(1-5):(8-15) to obtain a mixture D; carbon fiber paper coated with water-soluble polyvinyl alcohol fibers on the surface is prepared; the carbon fiber paper coated with the water-soluble polyvinyl alcohol fibers on the surface is immersed in the mixture D, the carbon fiber paper and the mixture D are then together transferred to a vacuum concentrator, and vacuum concentration is carried out until a solvent is completely evaporated; and a concentrated composite material is dried and electrodes are fixed to obtain a finished product. The conductivity of the fuel cell can be effectivelyimproved.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a preparation method of a fuel cell, and more specifically relates to a preparation method of a proton exchange membrane fuel cell. Background technique [0002] A fuel cell is a device that directly converts chemical energy into electrical energy. It uses fuels such as hydrogen, natural gas, and methanol, and pure oxygen or air as raw materials to undergo oxidation-reduction reactions at the cathode and anode of the battery, thereby continuously generating direct current. Fuel cells can be divided into six categories: phosphoric acid fuel cell (PAFC), molten carbonate fuel cell (MCFC), solid oxide fuel cell (SOFC), direct methanol fuel cell (DAFC), alkaline fuel cell (AFC) and proton exchange membrane fuel cells (PEMFC). Among them, the proton exchange membrane fuel cell is considered to be the most promising technology for aerospace, military, electric vehicles ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/1048H01M8/1069
CPCH01M8/1048H01M8/1069H01M2008/1095Y02E60/50
Inventor 陈斌任志国叶烽吴桐刘舒君
Owner 武汉长海电力推进和化学电源有限公司