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Preparation of nitrogen-containing carbon material and application thereof as oxygen-reduction electrocatalyst in fuel cell

A technology of carbon materials and high nitrogen content, applied in the direction of physical/chemical process catalysts, battery electrodes, circuits, etc., can solve the problems of high production costs, restrictions on practical application commercialization, etc., and achieve industrialization and stability Good, cost reduction effect

Inactive Publication Date: 2014-07-02
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the extensive use of noble metal catalysts, the production cost has been high, which limits its practical application and complete commercialization.

Method used

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  • Preparation of nitrogen-containing carbon material and application thereof as oxygen-reduction electrocatalyst in fuel cell
  • Preparation of nitrogen-containing carbon material and application thereof as oxygen-reduction electrocatalyst in fuel cell
  • Preparation of nitrogen-containing carbon material and application thereof as oxygen-reduction electrocatalyst in fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Dried soybeans, crushed them, and milled them in a ball mill for 4-6 hours to obtain soybean powder;

[0039] (2) In a 100 ml flask, add 30 ml of absolute ethanol, then add 90 g of soybean flour and 10 g of ferric chloride, stir and mix evenly; place in an ultrasonic disperser for ultrasonic dispersion for 10 min, and stir for 10 min; Then place it in a blast oven at 80°C to evaporate the solvent and dry to obtain a mixed solid powder;

[0040](3) Mill the mixed solid powder in a zirconia ball mill tank for 4 h (the exchange operation interval is 1 h); 2 Carbonize under protection for 1 h to obtain primary carbonized material;

[0041] (4) After the primary carbonized material was milled in a zirconia ball mill tank for 4 hours (the exchange interval was 1 hour), it was fully dispersed in 30 ml of acetone, and refluxed at 60°C for 2 hours to clean the residual organic matter during the carbonization process; After suction filtration and water washing, use a mixed ...

Embodiment 2

[0045] (1) Dried soybeans, crushed them, and milled them in a ball mill for 4-6 hours to obtain soybean powder;

[0046] (2) In a 100 ml flask, add 30 ml of absolute ethanol, then add 99 g of soybean powder and 1 g of nickel chloride, stir and mix evenly; place in an ultrasonic disperser for ultrasonic dispersion for 10 min, and stir for 10 min; Then place it in a blast oven at 80°C to evaporate the solvent and dry to obtain a mixed solid powder;

[0047] (3) Mill the mixed solid powder in a zirconia ball mill tank for 3 h (the exchange operation interval is 1 h); 2 Carbonize under protection for 2 h to obtain primary carbonized material;

[0048] (4) After the primary carbonized material was ball-milled in a zirconia ball mill tank for 3 h (the exchange operation interval was 1 h), it was fully dispersed in 30 ml of acetone, and refluxed at 60 ° C for 2 h to clean the residual organic matter during the carbonization process; After suction filtration and water washing, use a...

Embodiment 3

[0052] (1) Dried soybeans, crushed them, and milled them in a ball mill for 4-6 hours to obtain soybean powder;

[0053] (2) In a 100 ml flask, add 30 ml of absolute ethanol, then add 9.5 g of soybean powder and 0.5 g of cobalt chloride, stir and mix evenly; place in an ultrasonic disperser for ultrasonic dispersion for 10 min, and stir for 10 min; Then place it in a blast oven at 80°C to evaporate the solvent and dry to obtain a mixed solid powder;

[0054] (3) Mill the mixed solid powder in a zirconia ball mill tank for 5 h (the exchange operation interval is 1 h); 2 Carbonize under protection for 2 h to obtain primary carbonized material;

[0055] (4) After the primary carbonized material was milled in a zirconia ball mill tank for 5 h (the exchange operation interval was 1 h), it was fully dispersed in 30 ml of acetone, and refluxed at 60 ° C for 4 h to clean the residual organic matter during the carbonization process; After suction filtration and water washing, use a m...

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Abstract

The invention provides a preparation method of a high nitrogen-containing carbon material, and belongs to the technical field of a carbon composite material. Natural soybean with low price is taken as a C source, and is compounded with a certain amount of chlorate, and the high nitrogen-containing carbon material prepared by carbonizing twice under protection of inert gases has high specific surface area. An experiment shows that the high nitrogen-containing carbon material prepared by the preparation method is taken as an oxygen reduction catalyst for preparing a proton exchange membrane fuel cell, and has the advantages of being good in stability, high in activity, not easy to poison, and the like. Above all, the used materials in the preparation process of the high nitrogen-containing carbon material disclosed by the method are not noble metal; and non-noble metal mineralization of the oxygen reduction catalyst in the fuel cell is achieved. Thus, the cost of the oxygen reduction catalyst is greatly reduced, and industrialization of the fuel cell is facilitated.

Description

technical field [0001] The technical field of the carbon composite material of the present invention relates to a preparation method of a high nitrogen-containing carbon material; the present invention also relates to the application of the high nitrogen-containing carbon material as an oxygen reduction electrocatalyst in the preparation of a proton exchange membrane combustion battery. Background technique [0002] A fuel cell is a power generation device that directly converts the chemical energy in fuel into electrical energy through an electrochemical reaction without combustion. It is a green energy technology because its emissions do not contain harmful gases such as nitrogen oxides and particulate matter. , as a green energy that can improve environmental pollution and global warming, and can achieve high efficiency and miniaturization compared with conventional storage batteries and rechargeable batteries, the future popularization and market prospects are widely expe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24H01M4/90
CPCY02E60/50
Inventor 王荣方周田宝王辉
Owner NORTHWEST NORMAL UNIVERSITY
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