Iron-nitrogen-codoped porous carbon catalyst for proton exchange membrane fuel cell and method of iron-nitrogen-codoped porous carbon catalyst

A proton exchange membrane, fuel cell technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as failure to exert catalytic performance, reduce catalyst costs, and destroy active components, and achieve strong resistance to methanol poisoning. Catalytic performance, high stability effect

Inactive Publication Date: 2016-01-06
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this type of method involves many complicated and time-consuming processes, such as the preparation of nano-templates, uniform dispersion in carbon precursors, removal of nano-templates by chemical etching, separation and purification of catalysts, etc., which is not conducive to reducing the cost and cost of catalysts. Large-scale production and preparation, and some active components may be damaged by etching acid / alkali during the template etching removal process, failing to exert its due catalytic performance, and may miss some potential components during the sample screening process. catalytic material

Method used

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  • Iron-nitrogen-codoped porous carbon catalyst for proton exchange membrane fuel cell and method of iron-nitrogen-codoped porous carbon catalyst
  • Iron-nitrogen-codoped porous carbon catalyst for proton exchange membrane fuel cell and method of iron-nitrogen-codoped porous carbon catalyst
  • Iron-nitrogen-codoped porous carbon catalyst for proton exchange membrane fuel cell and method of iron-nitrogen-codoped porous carbon catalyst

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Effect test

Embodiment 1

[0030] A preparation method for an iron-nitrogen co-doped porous carbon catalyst for a proton exchange membrane fuel cell, specifically comprising the following steps:

[0031] (1) 6.0mmol of 2-fluoroaniline and 12.0mmol of FeCl 3 At the same time, add it to 20mL deionized water and stir it magnetically at a speed of 500rpm for 10min to form a uniform mixture;

[0032] (2) Transfer the mixed solution in step (1) to a steel hydrothermal reaction kettle embedded with a polytetrafluoroethylene inner sleeve, and conduct a hydrothermal reaction at 180° C. for 4 hours under sealed conditions; put the hydrothermal reaction kettle in Naturally cool to room temperature in the air, then filter, and wash the obtained filter residue with ethanol and deionized water for 3 times; finally, dry the cleaned filter residue in a vacuum oven at 50°C for 24 hours to obtain a large number of FeOOH nanoparticles embedded inside. Crystalline poly-2-fluoroaniline flakes with a structure such as figure...

Embodiment 2

[0041] A preparation method for an iron-nitrogen co-doped porous carbon catalyst for a proton exchange membrane fuel cell, specifically comprising the following steps:

[0042] (1) 5.0mmol of 2-fluoroaniline and 12.0mmol of FeCl 3 Add to 20mL deionized water, and magnetically stir at 500rpm for 10min to form a uniform mixture;

[0043] (2) Transfer the mixed solution in step (1) to a steel hydrothermal reaction kettle embedded with a polytetrafluoroethylene inner sleeve, and conduct a hydrothermal reaction at 180° C. for 4 hours under sealed conditions; put the hydrothermal reaction kettle in Naturally cool to room temperature in the air, then filter, and wash the obtained filter residue with ethanol and deionized water for 3 times; finally, dry the cleaned filter residue in a vacuum oven at 50°C for 24 hours to obtain a large number of FeOOH nanoparticles embedded inside. Crystalline poly-2-fluoroaniline platelets.

[0044] (3) the poly 2-fluoroaniline flakes that are embed...

Embodiment 3

[0047] A preparation method for an iron-nitrogen co-doped porous carbon catalyst for a proton exchange membrane fuel cell, specifically comprising the following steps:

[0048] (1) 6.0mmol of 2-fluoroaniline and 10.0mmol of FeCl 3 At the same time, add it to 20mL deionized water and stir it magnetically at a speed of 500rpm for 10min to form a uniform mixture;

[0049] (2) Transfer the mixed solution in step (1) to a steel hydrothermal reaction kettle embedded with a polytetrafluoroethylene inner sleeve, and conduct a hydrothermal reaction at 180° C. for 4 hours under sealed conditions; put the hydrothermal reaction kettle in Naturally cool to room temperature in the air, then filter, and wash the obtained filter residue with ethanol and deionized water for 3 times; finally, dry the cleaned filter residue in a vacuum oven at 50°C for 24 hours to obtain a large number of FeOOH nanoparticles embedded inside. Crystalline poly-2-fluoroaniline platelets.

[0050] (3) the poly 2-f...

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Abstract

The invention belongs to the technical field of catalysts, and discloses an iron-nitrogen-codoped porous carbon catalyst for a proton exchange membrane fuel cell and a preparation method of the iron-nitrogen-codoped porous carbon catalyst. The method comprises the following steps: (1) adding 2-fluoroaniline and a ferric iron salt to deionized water, and stirring the deionized water evenly to obtain a mixed liquid; (2) transferring the mixed liquid obtained in the step (1) to a hydrothermal reaction kettle for a hydrothermal reaction, and cooling, filtering, cleaning and drying the mixed liquid to obtain a 2-fluoroaniline flake; (3) putting the 2-fluoroaniline flake obtained in the step (2) into a quartz tube furnace, introducing nitrogen, warming to 750-850 DEG C, carrying out a thermal reaction for 2-3 hours, and cooling the 2-fluoroaniline flake to obtain the iron-nitrogen-codoped porous carbon catalyst. The prepared catalyst is large in specific surface area, good in catalytic property, high in anti-methanol poisoning capability, good in durability, high in stability and simple in preparation method, and can be applied to the field of the fuel cell.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and relates to a porous carbon catalyst, in particular to an iron-nitrogen co-doped porous carbon catalyst for a proton exchange membrane fuel cell and a preparation method thereof. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) is a device that can directly convert the chemical energy of fuel into electrical energy without heat energy. Because its working mechanism does not involve the combustion process, it is not limited by the Carnot cycle and has a high Theoretical conversion efficiency (83%), and has the characteristics of clean environmental protection, low noise, quick start, low working temperature, convenient assembly and maintenance, and can work continuously for a long time. PEMFC can be prepared as a centralized power station or as a portable and distributed power supply to provide cheap and durable power for aerospace, transportation, mobile communication...

Claims

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Application Information

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IPC IPC(8): H01M4/90H01M4/96B82Y30/00
CPCB82Y30/00H01M4/9083H01M4/96Y02E60/50
Inventor 黎立桂牛文翰陈少伟
Owner SOUTH CHINA UNIV OF TECH
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