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Preparation method of non-metallic modified oxide direct alcohol fuel cell cathode catalyst

A fuel cell cathode and oxide technology, applied in fuel cells, battery electrodes, circuits, etc., can solve problems such as poor stability, low catalyst performance, and high catalyst preparation costs

Inactive Publication Date: 2017-08-11
TIANJIN POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of low performance, poor stability and high catalyst preparation cost of existing direct alcohol fuel cell catalysts, and to provide a preparation method of non-metal modified oxide type direct alcohol fuel cell cathode catalysts
Finally, a non-metal-modified oxide-type direct alcohol fuel cell cathode catalyst was obtained

Method used

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  • Preparation method of non-metallic modified oxide direct alcohol fuel cell cathode catalyst

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specific Embodiment approach 1

[0006] Specific embodiment one: the preparation method of nonmetal modified oxide type direct alcohol fuel cell cathode catalyst is to realize according to the following steps: 1, take cerium chloride and sodium hydroxide as raw material, deionized water is solvent, and in stainless steel high pressure Heat in the kettle at 200°C, react for 45 hours, and prepare ceria nanowires by hydrothermal method; 2. Disperse the product obtained in step 1 and phosphorus ionic liquid in deionized water, and ultrasonically 1 hour to obtain a uniform dispersion. 3. Fill the Put the crucible of the slurry in a water bath at 80° C. to evaporate to dryness. 4. Heat the product obtained in step 3 in a tube furnace at 300° C. for 2 hours under argon gas.

specific Embodiment approach 2

[0007] Embodiment 2: This embodiment is different from Embodiment 1 in that the reaction time of step 1 is 30 hours; its steps and parameters are the same as Embodiment 1.

specific Embodiment approach 3

[0008] Embodiment 3: This embodiment is different from Embodiment 1 and Embodiment 2 in that the reaction temperature in Step 1 is changed to 180°C. Other steps and parameters are the same as those in the specific embodiment 1 to 2.

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Abstract

The invention discloses a preparation method of a non-metallic modified oxide direct alcohol fuel cell cathode catalyst, and relates to a preparation method of a direct alcohol fuel cell catalyst. The preparation method solves the problems of low activity, poor stability, oxygen fuel delivery frustration and high catalyst preparation cost in a performance reduction mechanism of the existing direct alcohol fuel cell catalyst. The method comprises the steps of taking metal salt and sodium hydroxide as raw materials, preparing an oxide nanowire by a simple hydrothermal method, and then doping a non-metallic substance to improve the activity and the stability of the catalyst. The catalyst prepared by the method facilitates oxygen fuel delivery, has the advantages of low cost, high poisoning resistance, high activity and high stability, and is mainly used as a methanol fuel cell cathode catalyst.

Description

technical field [0001] The invention relates to a preparation method of a direct alcohol fuel cell cathode catalyst. Background technique [0002] Direct alcohol fuel cells (DAFCs) have attracted increasing interest from scientists all over the world due to their high energy density, simple structure, and low operating temperature. Platinum is more expensive and the resource is depleted. To overcome the cost of fuel cells, all components must be made cheap after mass production. However, if the existing direct alcohol fuel cell cathode catalyst uses platinum carbon as the catalyst, it will undoubtedly increase its cost. Therefore, it is a good choice to use non-metal modified oxides as cathode catalysts. Contents of the invention [0003] The purpose of the present invention is to solve the problems of low performance, poor stability and high catalyst preparation cost of existing direct alcohol fuel cell catalysts, and to provide a preparation method of non-metal modifie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90H01M8/1011
CPCH01M4/9016H01M8/1013Y02E60/50
Inventor 初园园王海涛薛瑜
Owner TIANJIN POLYTECHNIC UNIV
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