Electrocatalyst for fuel cell and preparation method of electrocatalyst

An electrocatalyst and fuel cell technology, applied in the field of electrochemistry, can solve the problems of unfavorable commercial application of fuel cells, low reserves, high cost, etc.

Active Publication Date: 2021-09-07
JINGGANGSHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing electrocatalysts for fuel cells are mainly based on platinum-series noble metals. Although platinum-series noble metals have excellent catalytic performance, their reserves are generally low and their costs are generally high, which is not conducive to the commercial application of fuel cells.

Method used

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  • Electrocatalyst for fuel cell and preparation method of electrocatalyst
  • Electrocatalyst for fuel cell and preparation method of electrocatalyst
  • Electrocatalyst for fuel cell and preparation method of electrocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] An electrocatalyst for a fuel cell, the preparation of the electrocatalyst comprises the following steps:

[0032] S1: mixing folic acid and ferric chloride in a mass ratio of 1:5 to obtain a mixture;

[0033] S2: the mixture obtained in S1 is heated to 750°C at room temperature at a heating rate of 5°C / min for 235min, and then placed in a furnace and slowly cooled to room temperature to obtain an annealed product;

[0034] S3: Wash the annealed product three times with 2M hydrochloric acid first, and then wash it three times with double distilled water, and then dry the washed annealed product in a vacuum drying oven at 70°C for 12 hours, to obtain electrocatalyst sample 1, and denote sample 1 as m- NC-750.

Embodiment 2

[0036] The raw materials and operations used in Example 2 are the same as those in Example 1, except that the holding temperature is 650°C. The electrocatalyst sample 2 was prepared, and the sample 2 was referred to as m-NC-650.

Embodiment 3

[0038] The raw materials and operations used in Example 3 are the same as those in Example 1, except that the holding temperature is 850°C. The electrocatalyst sample 3 was prepared, and the sample 3 was referred to as m-NC-850.

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Abstract

The invention provides an electrocatalyst for a fuel cell and a preparation method of the electrocatalyst. The electrocatalyst is prepared from the following raw materials in parts by mass: 1 part of folic acid and 3-7 parts of ferric trichloride. The preparation method comprises the steps of S1, mixing folic acid and ferric trichloride according to a mass ratio of 1: 3-1: 7; S2, annealing the mixture obtained in the step S1 for 6 hours; S3, washing a product obtained after annealing in the S2 is completed; and S4, drying the product washed in the step S3 to obtain the electrocatalyst. Folic acid is adopted as a main raw material, the carbon material electrocatalyst doped with a large amount of nitrogen elements is obtained through high-temperature pyrolysis, and the electrocatalyst is high in catalytic activity, low in cost, simple in process and suitable for commercial production.

Description

technical field [0001] The invention belongs to the field of electrochemistry, and in particular relates to an electrocatalyst for a fuel cell and a preparation method thereof. Background technique [0002] Hydrogen-fueled proton exchange membrane fuel cells are devices that can convert chemical energy into electrical energy, and are widely used in fuel cell vehicles due to their high energy density, environmental friendliness, cleanliness and high efficiency. At present, many countries in the world are committed to the research and development of fuel cell vehicles and actively promote their commercialization. The key to fuel cells lies in the development of electrocatalysts. The existing electrocatalysts for fuel cells are mainly platinum-series precious metals. Although platinum-series precious metals have excellent catalytic properties, their reserves are generally low and their costs are generally high, which is very unfavorable for the commercial application of fuel c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/90
CPCH01M4/9083H01M4/90H01M4/8878Y02E60/50
Inventor 刘雪霞李帅辉宋佳欣张悦刘利民王志军
Owner JINGGANGSHAN UNIVERSITY
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