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A kind of proton exchange membrane non-platinum catalyst using peanut as raw material and preparation method thereof

A technology of proton exchange membrane and platinum catalyst, which is applied in the direction of fuel cells, electrochemical generators, structural parts, etc., can solve the problems that hinder the application of proton exchange membrane fuel cells, the high price of platinum, and low reserves, and achieve excellent oxygen storage/ Effect of release ability, improvement of oxygen reduction activity, enrichment of nitrogen and carbon elements

Active Publication Date: 2019-06-11
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, platinum and platinum-based materials are mainly used as catalysts in proton exchange membrane fuel cells. The high price and limited reserves of platinum hinder the application of proton exchange membrane fuel cells.

Method used

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  • A kind of proton exchange membrane non-platinum catalyst using peanut as raw material and preparation method thereof

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preparation example Construction

[0018] A kind of preparation method of the cathode non-platinum catalyst of proton exchange membrane fuel cell with peanut as raw material, comprises the following steps:

[0019] 1) Mix peanuts with water at a ratio of 100 g:100-1000 mL and make peanut slurry;

[0020] 2) Add cerium oxide precursor and iron precursor and stir evenly;

[0021] The mass ratio of peanut, cerium oxide precursor and iron precursor is 1-100:1-50:1-35, and the molar ratio of carbon, nitrogen, iron and cerium oxide in the catalyst is 1-10:0.3-3:0.1 -5:0.1-5;

[0022] The cerium oxide precursor is cerium nitrate or ammonium cerium nitrate; the iron precursor is ferric nitrate, ferric sulfate, ferric chloride, ferrocene, ferric hydroxide, ferric sulfide, ferric halide or ferric perchlorate;

[0023] 3) Add a sodium hydroxide solution with a concentration of 0.5-15mol / L and stir evenly to obtain a mixed solution;

[0024] 4) Put the above mixed solution into a high-pressure reactor and seal it, and h...

Embodiment 1

[0027] A method for preparing a proton exchange membrane fuel cell cathode catalyst with good oxygen reduction activity, the specific steps are:

[0028] 1. Mix 100 g peanuts with 100 ml water and put them in a blender to prepare peanut slurry;

[0029] 2. Take 0.7 ml of the peanut slurry prepared in step 1, mix with 4.34 g of cerium nitrate and 4.04 g of ferric nitrate, and stir for 60 min;

[0030] 3. Add a NaOH aqueous solution with a concentration of 0.5 M to the mixed solution prepared in step 2, and stir for 30 min;

[0031] 4. Put the mixed liquid prepared in step 3 into the autoclave, seal it, and keep it warm at 180 ºC for 1 hour;

[0032] 5. Cool the high-pressure reactor after heat preservation, pour out the liquid therein, filter and dry;

[0033] 6. Place the product obtained in step 5 in a hydrogen atmosphere, heat and hold it at 300°C for 6 h, and obtain a non-platinum catalyst for the cathode of a proton exchange membrane fuel cell with good oxygen reduction ...

Embodiment 2

[0037] A method for preparing a proton exchange membrane fuel cell cathode catalyst with good oxygen reduction activity, the specific steps are:

[0038] 1. Mix 100 g peanuts with 1000 ml water and put them in a blender to prepare peanut slurry;

[0039] 2. Take 15 ml of peanut slurry prepared in step 1, mix with 4.3 g of cerium nitrate and 4 g of ferric sulfate, and stir for 60 min;

[0040] 3. Add a NaOH aqueous solution with a concentration of 15 M to the mixed solution prepared in step 2, and stir for 30 min;

[0041] 4. Put the mixture prepared in step 3 into the autoclave, seal it, and keep it warm at 80 ºC for 24 hours;

[0042] 5. Cool the high-pressure reactor after heat preservation, pour out the liquid therein, filter and dry;

[0043] 6. Place the product obtained in step 5 in an atmosphere of carbon monoxide, and heat it at 500°C for 1 h. After cooling, a proton exchange membrane fuel cell cathode catalyst with good oxygen reduction activity is obtained.

[004...

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Abstract

The invention belongs to the preparation field of fuel cell catalysts, and specifically relates to a proton exchange membrane fuel cell anode non-platinum catalyst and a preparation method of the catalyst. The catalyst is prepared and formed by using peanut as a source of carbon and nitrogen elements and compounding a cerium oxide precursor and an iron precursor, wherein the mass ratio of the peanut, the cerium oxide precursor to the iron precursor is (1 to 100): (1 to 50): (1 to 35), and the mole ratio of carbon, nitrogen, iron to cerium oxide in the catalyst is (1 to 10): (0.3 to 3): (0.1 to 5): (0.1 to 5). The catalyst disclosed by the invention has the advantage of good oxygen reduction activity, does not contain precious metals, and has very important meaning.

Description

technical field [0001] The invention relates to the field of fuel cell catalyst preparation, in particular to a proton exchange membrane fuel cell cathode non-platinum catalyst using peanuts as a raw material and a preparation method thereof. Background technique [0002] Proton exchange membrane fuel cells have attracted extensive attention due to their high efficiency, high power density, and environmental friendliness. At present, PEMFCs mainly use platinum and platinum-based materials as catalysts. The high price and limited reserves of platinum hinder the application of PEMFCs. Therefore, it is particularly urgent and important to develop catalysts with low price and good activity. Contents of the invention [0003] The purpose of the present invention is to provide a non-platinum catalyst for the cathode of a proton exchange membrane fuel cell which is cheap and has good oxygen reduction activity. [0004] To achieve the above object, the present invention adopts t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90H01M4/88H01M4/96H01M8/1004
CPCH01M4/8817H01M4/9016H01M4/96H01M8/1004Y02E60/50
Inventor 徐峰
Owner FUZHOU UNIV
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