Nano-porous Fe-P-C material and preparation method thereof, and applications in hydrogen production through water electrolysis

A nanoporous, fe-p-c technology, applied in the electrolysis process, electrolysis components, electrodes, etc., can solve problems such as foul language, anode catalyst activity and cost constraints, direct fuel cell large-scale application, and reduction of the contact area between nanoparticles and carbon materials.

Inactive Publication Date: 2020-03-27
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the activity and cost of anode catalysts have restricted the large-scale application of direct fuel cells.
However, the commonly used carbon-supported nanoparticle catalysts will experience severe foul language during the long-range catalytic process, resulting in a decrease in the contact area between nanoparticles and carbon materials.

Method used

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  • Nano-porous Fe-P-C material and preparation method thereof, and applications in hydrogen production through water electrolysis
  • Nano-porous Fe-P-C material and preparation method thereof, and applications in hydrogen production through water electrolysis
  • Nano-porous Fe-P-C material and preparation method thereof, and applications in hydrogen production through water electrolysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Weigh 5.1075g of pure iron (Fe), iron phosphide (Fe 3 P) 1.517g, iron carbide (Fe 3 C) 1.375g. The total sample is 8g.

[0029] 2. Put the 8g sample into the argon melting furnace. After the molecular pump evacuated the high-purity argon protective atmosphere, it melted 4 times to make the internal composition of the alloy uniform. get Fe 90 P 5 C 5 alloy ingot.

[0030] 3. Afterwards, take out the alloy ingot and crush it, take the fragments and clean them with anhydrous ethanol ultrasonically, put them in a clean quartz tube, place them in a belt throwing machine, and spray the melted liquid alloy on a high-speed rotating copper roller after extracting a high vacuum On, the liquid is rapidly cooled to form amorphous strips instantly. The belt swing machine needs to draw 7×10 -3 Pa. The speed of the copper roll needs to be controlled at 4000 rpm. The pressure difference between the quartz tube and the furnace needs to be controlled at 0.4Pa. get Fe 90 P ...

Embodiment 2

[0035] Weigh pure iron, iron phosphide and iron carbide for smelting to obtain Fe 80 P 10 C 10 alloy ingot. Afterwards, the alloy ingot is taken out and crushed, and the fragments are ultrasonically cleaned with anhydrous ethanol, placed in a clean quartz tube, placed in a belt throwing machine, and the molten liquid alloy is sprayed on a high-speed rotating copper roller after a high vacuum is drawn. Rapid cooling of the liquid instantly forms amorphous strips. The belt swing machine needs to draw 7×10 -3 Pa. The speed of the copper roll needs to be controlled at 4000 rpm. The pressure difference between the quartz tube and the furnace needs to be controlled at 0.4Pa. get Fe 80 P 10 C 10 Crystal alloy strips. Cut into small pieces, the width of the strip is 8mm, and its length is 20mm. The cut strips were put into a beaker, sonicated in absolute ethanol for 20 min, then washed with absolute ethanol, and then placed in a vacuum oven at room temperature for 12 hours....

Embodiment 3

[0038] Weigh pure iron, iron phosphide and iron carbide for smelting to obtain Fe 85 P 10 C 5 alloy ingot. Afterwards, the alloy ingot is taken out and crushed, and the fragments are ultrasonically cleaned with anhydrous ethanol, placed in a clean quartz tube, placed in a belt throwing machine, and the molten liquid alloy is sprayed on a high-speed rotating copper roller after a high vacuum is drawn. Rapid cooling of the liquid instantly forms amorphous strips. The belt swing machine needs to draw 7×10 -3 Pa. The speed of the copper roll needs to be controlled at 4000 rpm. The pressure difference between the quartz tube and the furnace needs to be controlled at 0.4Pa. get Fe 80 P 10 C 10 Crystal alloy strips. Cut into small pieces, the width of the strip is 8mm, and its length is 20mm. The cut strips were put into a beaker, sonicated in absolute ethanol for 20 min, then washed with absolute ethanol, and then placed in a vacuum oven at room temperature for 12 hours. ...

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Abstract

The invention discloses a nano-porous Fe-P-C material and a preparation method thereof, and applications in hydrogen production through water electrolysis, wherein a crystal strip of an alloy is prepared from the following components in percentage by mass: 22-64% of pure Fe, 19-41% of Fe3P and 17-37% of Fe3C. The preparation method comprises: carrying out mixing smelting on metal raw materials toobtain an alloy ingot, melting the alloy ingot, spraying out to obtain an alloy strip, and carrying out ultrasonic vacuum drying. According to the invention, a three-electrode system of an electrochemical workstation is used, a calomel electrode is used as a reference electrode, a platinum net is used as a counter electrode, a Fe-P-C alloy strip is used as a working electrode, an H2SO4 aqueous solution is used as an electrolytic solution, electrochemical corrosion is carried out through constant potential, the potential parameter is -0.1 V to -0.5 V, and the corrosion time is 600-1600 s. Compared with the noble metal catalysts on the market, the ano-porous Fe-P-C material of the invention has characteristics of high price advantage, high stability, simple preparation method, few process and good market industrialization prospect.

Description

technical field [0001] The present invention relates to nano-scale porous materials, more specifically, to a nano-porous Fe-P-C material and its preparation method and its application in hydrogen production by electrolysis of water, mainly used as cathode hydrogen production catalyst material in electrolysis water system. Background technique [0002] In recent years, with the massive exploitation of fossil fuels, the reserves of fossil fuels on the earth are decreasing day by day. The combustion of fossil fuels will produce a large amount of greenhouse gases, leading to the intensification of the global greenhouse effect, and then causing a series of ecological and environmental problems. With the increasingly severe situation, hydrogen energy has received more and more attention in the field of new energy due to its high conversion efficiency and clean and pollution-free. However, the activity and cost of anode catalysts have restricted the large-scale application of dire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/06C25B1/04C22C45/02C25F3/06
CPCC22C33/003C22C45/02C25B1/04C25B11/04C25F3/06Y02E60/36
Inventor 朱胜利蒋睿崔振铎杨贤金
Owner TIANJIN UNIV
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