Fuel cell anode catalyst, preparation method thereof and proton exchange membrane fuel cell

A fuel cell and catalyst technology, applied in battery electrodes, nanotechnology for materials and surface science, circuits, etc., can solve the problems of high cost of proton exchange membrane fuel cells, poor resistance to carbon monoxide poisoning, and low activity of anode catalysts , to achieve the effect of improving the resistance to carbon monoxide poisoning, improving stability, and reducing platinum loading

Active Publication Date: 2019-06-21
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of high cost of proton exchange membrane fuel cells due to excessive loading of platinum and other noble metal catalysts in current proton exchange membrane fuel cell

Method used

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  • Fuel cell anode catalyst, preparation method thereof and proton exchange membrane fuel cell
  • Fuel cell anode catalyst, preparation method thereof and proton exchange membrane fuel cell
  • Fuel cell anode catalyst, preparation method thereof and proton exchange membrane fuel cell

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0044] See figure 1 , The preparation method of the fuel cell anode catalyst includes the following steps:

[0045] Step S01. Dissolving ammonia in a mixed solvent of ethanol and deionized water to obtain an alkaline mixed solvent;

[0046] Step S02. Add ethyl silicate to the alkaline mixed solvent to obtain a mixed solution;

[0047] Step S03. Add dopamine hydrochloride to the mixed solution, add ammonium molybdate tetrahydrate after mixing, and evaporate at a constant temperature to obtain a precursor material (the precursor material is composed of: (NH 4 ) 2 Mo 3 O 10 @PDA@SiO 2 );

[0048] Step S04. Perform heat treatment on the precursor material, and pass in oxygen after being naturally cooled to room temperature for passivation treatment; after the passivation treatment, hydrofluoric acid is used for impregnation treatment to obtain molybdenum carbide@空心炭球(β-Mo 2 C@HCS);

[0049] Step S05. The molybdenum carbide@hollow carbon ball is impregnated and loaded with platinum by an imp...

Example Embodiment

[0071] Example 1

[0072] A preparation method of fuel cell anode catalyst includes the following steps:

[0073] (a) Take a 500 mL beaker, add 160 mL of deionized water and 48 mL of absolute ethanol to the beaker in turn, stir at room temperature at 600 rpm for 15 minutes, and mix well to obtain a mixed solvent.

[0074] (b). Drop 2 mL of ammonia water with a mass concentration of 25%-28% into the above mixed solvent dropwise, stir at room temperature at 600 rpm for 30 minutes, and mix well to obtain an alkaline mixed solution.

[0075] (c). Drop 2 mL of ethyl silicate with a purity of ≥98% into the above alkaline mixed solution drop by drop, stir at room temperature at 600 rpm for 30 min, mix well, and then add 8 mL of the prepared concentration of 100 mg / mL The dopamine hydrochloride solution is dripped, and the amount of dopamine hydrochloride entering the alkaline mixed solution in every (2 to 3) minutes is controlled to (500-800) mg; it is stirred at room temperature at 600 rpm ...

Example Embodiment

[0079] Example 2

[0080] A preparation method of fuel cell anode catalyst includes the following steps:

[0081] (a) Take a beaker with a capacity of 500 mL, add 160 mL of deionized water and 48 mL of anhydrous ethanol to the beaker in turn, stir at room temperature at 600 rpm for 15 minutes, and mix well to obtain a mixed solvent.

[0082] (b). Drop 2 mL of ammonia water with a mass concentration of 25%-28% into the above mixed solvent dropwise, stir at room temperature at 600 rpm for 30 minutes, and mix well to obtain an alkaline mixed solution.

[0083] (c). Drop 2 mL of ethyl silicate with a purity of ≥98% into the alkaline mixed solution dropwise, stir at room temperature at 600 rpm for 30 minutes, mix well, and then add 8 mL of hydrochloric acid with a concentration of 100 mg / mL. For the dopamine solution, the amount of dopamine hydrochloride entering the alkaline mixed solution in every (2 to 3) minutes is controlled to (500-800) mg; it is stirred at room temperature at 600 rp...

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Abstract

The invention relates to the technical field of fuel cell catalysts, and specifically provides a fuel cell anode catalyst, a preparation method thereof and a proton exchange membrane fuel cell. The fuel cell anode catalyst is at least one of molybdenum carbide@hollow carbon sphere and platinum&molybdenum carbide@hollow carbon sphere, wherein the molybdenum carbide@hollow carbon sphere represents that the surface of the hollow carbon sphere is loaded with molybdenum carbide nanoparticles; and the platinum&molybdenum carbide@hollow carbon sphere represents that the surface of the hollow carbon sphere is loaded with molybdenum carbide nanoparticles and platinum nanoparticles at the same time. The anode catalyst is capable of improving the catalytic activity, carbon monoxide poisoning resistance and catalytic stability while reducing the loading amount of the platinum, and is beneficial for promoting the large-scale commercial application of the proton exchange membrane fuel cell.

Description

technical field [0001] The invention belongs to the technical field of fuel cell catalysts, and in particular relates to a fuel cell anode catalyst, a preparation method thereof and a proton exchange membrane fuel cell. Background technique [0002] With the development of science and technology and the improvement of human living standards, people's consumption of fossil fuels is increasing day by day, which also causes huge damage to the ecological environment while consuming fossil fuels. Therefore, in order to solve the energy crisis and alleviate the pressure on the ecological environment, it is urgent to find renewable alternative energy sources. Proton exchange membrane fuel cells have many advantages such as good low-temperature performance, high energy conversion rate, simple structure, and low environmental pollution. They are recognized as the preferred chemical power source for clean energy vehicles and distributed power stations. application. At present, the m...

Claims

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Application Information

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IPC IPC(8): H01M4/90H01M4/92B82Y30/00
CPCY02E60/50
Inventor 邓成龙冯其李怡娴赵志亮张震李辉王海江
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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