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Preparation method of hydrogen fuel cell catalyst

A fuel cell and catalyst technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as low cost, achieve low cost, improve utilization rate, and solve catalyst resource problems

Inactive Publication Date: 2018-09-28
东莞众创新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a method for preparing a hydrogen fuel cell catalyst, which solves the shortcomings of the existing hydrogen fuel cell catalyst. The catalyst obtained by the invention has strong activity, long service life and low cost

Method used

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  • Preparation method of hydrogen fuel cell catalyst
  • Preparation method of hydrogen fuel cell catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Dissolve carbon nanotubes in water and ultrasonically disperse to obtain a dispersion. Adjust the pH of the dispersion to 6 with acetic acid, add ethylenediamine, stir evenly, and then reflux the solution at 65°C for 5 hours, filter, wash, Dry to obtain a carbon carrier; wherein the mass ratio of carbon nanotubes to ethylenediamine is 1:10, the diameter of the carbon nanotubes is between 10nm and 25nm, and the concentration of the carbon nanotube dispersion is 0.15mg / ml; weigh The above-mentioned carbon carrier, sodium dodecylsulfonate, tripotassium citrate and sodium acetate are added into the mixed alcohol solution, and dispersed uniformly to obtain a mixed solution containing the carbon carrier. Wherein, the mass ratio of the carbon carrier, sodium dodecylsulfonate, tripotassium citrate, sodium acetate and mixed alcohol solution is 1:0.2:4:2:1.5. The mixed alcohol solution is formed by mixing ethylene glycol and isopropanol; the volume ratio of the ethylene glycol an...

Embodiment 2

[0036] Dissolve carbon nanotubes in water and ultrasonically disperse to obtain a dispersion, adjust the pH of the dispersion to 6 with acetic acid, add ethylenediamine, stir evenly, then reflux the solution at 65°C for 6 hours, filter, wash, drying to obtain a carbon carrier; wherein the mass ratio of carbon nanotubes to ethylenediamine is 1:12, the diameter of the carbon nanotubes is between 10nm and 25nm, and the concentration of the carbon nanotube dispersion is 0.15-0.5mg / ml; The above-mentioned carbon carrier, sodium dodecylsulfonate, tripotassium citrate and sodium acetate are weighed and added into the mixed alcohol solution, and dispersed uniformly to obtain a mixed solution containing the carbon carrier. Wherein, the mass ratio of the carbon carrier, sodium dodecylsulfonate, tripotassium citrate, sodium acetate and mixed alcohol solution is 1:0.5:1.5:2:1.5. The mixed alcohol solution is formed by mixing ethylene glycol and isopropanol; the volume ratio of the ethylen...

Embodiment 3

[0044] Dissolve carbon nanotubes in water and ultrasonically disperse to obtain a dispersion, adjust the pH of the dispersion to 7 with acetic acid, add ethylenediamine, stir evenly, then reflux the solution at 70°C for 7 hours, filter, wash, Dry to obtain a carbon carrier; wherein the mass ratio of carbon nanotubes to ethylenediamine is 1:12, the diameter of the carbon nanotubes is between 10nm and 25nm, and the concentration of the carbon nanotube dispersion is 0.45mg / ml; weigh The above-mentioned carbon carrier, sodium dodecylsulfonate, tripotassium citrate and sodium acetate are added into the mixed alcohol solution, and dispersed uniformly to obtain a mixed solution containing the carbon carrier. Wherein, the mass ratio of the carbon carrier, sodium dodecylsulfonate, tripotassium citrate, sodium acetate and mixed alcohol solution is 1:1:5:2:2. The mixed alcohol solution is formed by mixing ethylene glycol and isopropanol; the volume ratio of the ethylene glycol and isopro...

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Abstract

The invention discloses a preparation method of a hydrogen fuel cell catalyst. According to the method, a triblock copolymer P123 is adopted to take as a protectant and a reductant simultaneously, thereby being environment-friendly and pollution-free; a carbon-supported PtNi intermetallic compound catalyst has a high catalytic ability in an oxidation-reduction reaction, so the problem of a catalyst resource confronted by an existing fuel cell is solved; compared with a traditional Pt / C catalyst, the usage of a precious metal is reduced and the utilization rate of the catalyst is improved; moreover, by using an intermetallic synergistic effect, the catalytic ability of the catalyst to an oxygen reduction reaction is improved; liquid phase reduction based uniform deposition and heat treatment are adopted by the method, so compared with the traditional method for preparing the catalyst, the steps are simple and convenient; and as a carbon carrier adopted by the method and subjected to surface modified treatment has a stable structure and a huge specific surface area, the uniform dispersion and attachment of platinum-nickel nanoparticles can be promoted, the electrochemically active surface area of catalyst nanoparticles is increased and the catalytic efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a method for preparing a hydrogen fuel cell catalyst. Background technique [0002] Over the years, people have been trying to find an energy utilization method that has high energy utilization efficiency and does not pollute the environment. A hydrogen fuel cell is a power generation device that converts the chemical energy of fuel directly into electrical energy through an electrode reaction. It has the characteristics of low environmental pollution and low noise, and is known as the preferred clean and efficient power generation technology in the 21st century. This high-efficiency and clean power generation system, which directly converts chemical energy into electrical energy continuously, has received extensive attention since its inception. Hydrogen fuel cell is a power generation device, but it is not discarded like ordinary non-rechargeable batteries, nor is it like ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/92
CPCH01M4/88H01M4/926Y02E60/50
Inventor 徐伟强
Owner 东莞众创新能源科技有限公司
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