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A kind of fuel cell catalyst and preparation method thereof

A fuel cell and catalyst technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of high price and limited resources, achieve good load performance, improve catalytic performance, and reduce costs

Active Publication Date: 2020-05-15
苏州朗泰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

[0004] The advantage of platinum is that it is stable and highly active at a high potential. However, platinum is a noble metal, which is expensive and has limited resources. Find Platinum Substitutes or Partial Substitutes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A preparation method of fuel cell catalyst, comprising the following steps:

[0039] (1) heating metal carbonitride in an inert gas containing oxygen to make metal carbonitride;

[0040] (2) Graphene is added in acetone and ultrasonically dispersed to obtain a graphene dispersion, and the metal carbonitride obtained in step (1) is added to the graphene dispersion, mixed and beaten, and the solvent is removed, and high-temperature treatment is obtained to obtain a metal carbonitride - graphene composites;

[0041] (3) The metal carbonitride-graphene composite material obtained in step (2) is impregnated with an acidic solution, washed after taking out, and dried;

[0042] (4) heat treatment, that is to say.

[0043] In step (1), the volume ratio of oxygen to inert gas is 1:7, and the inert gas is helium. The heating condition is: heating at 1000° C. for 8 hours.

[0044] The metal carbonitride is the carbonitride of titanium and scandium. The preparation method is as...

Embodiment 2

[0050] A preparation method of fuel cell catalyst, comprising the following steps:

[0051] (1) heating metal carbonitride in an inert gas containing oxygen to make metal carbonitride;

[0052] (2) Graphene is added in acetone and ultrasonically dispersed to obtain a graphene dispersion, and the metal carbonitride obtained in step (1) is added to the graphene dispersion, mixed and beaten, and the solvent is removed, and high-temperature treatment is obtained to obtain a metal carbonitride - graphene composites;

[0053] (3) The metal carbonitride-graphene composite material obtained in step (2) is impregnated with an acidic solution, washed after taking out, and dried;

[0054] (4) heat treatment, that is to say.

[0055] In step (1), the volume ratio of oxygen to inert gas is 1:8, and the inert gas is argon. The heating condition is: heating at 1100° C. for 9 hours.

[0056] The metal carbonitride is the carbonitride of titanium and scandium. The preparation method is as ...

Embodiment 3

[0062] A preparation method of fuel cell catalyst, comprising the following steps:

[0063] (1) heating metal carbonitride in an inert gas containing oxygen to make metal carbonitride;

[0064] (2) Graphene is added in acetone and ultrasonically dispersed to obtain a graphene dispersion, and the metal carbonitride obtained in step (1) is added to the graphene dispersion, mixed and beaten, and the solvent is removed, and high-temperature treatment is obtained to obtain a metal carbonitride - graphene composites;

[0065] (3) The metal carbonitride-graphene composite material obtained in step (2) is impregnated with an acidic solution, washed after taking out, and dried;

[0066] (4) heat treatment, that is to say.

[0067] In step (1), the volume ratio of oxygen to inert gas is 1:7.5, and the inert gas is helium. The heating condition is: heating at 1050° C. for 8.5 hours.

[0068] The metal carbonitride is the carbonitride of titanium and scandium. The preparation method i...

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PUM

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Abstract

The invention provides a fuel cell catalyst and a preparation method thereof. By utilizing metal oxycarbonitride and a small quantity of graphene to prepare a metal oxycarbonitride-graphene composite,the two of the metal oxycarbonitride and the graphene perform synergetic effect after being compounded, so that the catalytic performance is improved; then immersion treatment is performed on the composite with an acid solution, heat treatment is performed finally, and the internal structure and the surface performance of the catalyst are optimized to obtain the fuel cell catalyst; and without using noble metals such as platinum, the cost is lowered to a certain degree, and the obtained catalyst has very good catalytic activity.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a fuel cell catalyst and a preparation method thereof. Background technique [0002] New energy is currently a worldwide research and development hotspot. Fuel cells can directly convert the chemical energy of fuel into electrical energy without being limited by the Carnot cycle. [0003] In the process of fuel cell research and development, catalyst is one of the most critical and urgently needed breakthrough bottlenecks. Fuel cells are classified into various types according to the type of electrolyte or electrode, and typical types include alkali type, phosphoric acid type, molten carbonate type, solid electrolyte type, and solid polymer type. Electrocatalysts for fuel oxidation and redox are generally based on platinum or alloys of platinum with one or more other metals. Platinum or platinum alloy catalysts can be present as unsupported nano-sized particles such as metal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/86H01M4/90
CPCH01M4/8647H01M4/9075Y02E60/50
Inventor 卯志华
Owner 苏州朗泰新能源科技有限公司