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Iron-cobalt-nickel-copper-based high-entropy alloy water electrolysis catalytic material and preparation method thereof

A technology of catalytic materials and copper-based alloys, applied in catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as low cost, poor electrical conductivity, and low catalytic activity , to achieve the effect of improving catalytic activity, good stability and high active area

Active Publication Date: 2020-05-22
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the problems of high cost, low catalytic activity, poor stability, and poor conductivity of the existing electrolytic water catalytic materials, the present invention provides an iron-cobalt-nickel-copper-based high-entropy alloy electrolytic water catalytic material and its preparation method. Electrospinning method and high-temperature gas-assisted carbonization method are used to prepare carbon nanofiber-supported iron-cobalt-nickel-copper-based high-entropy alloy nanoparticles. good stability

Method used

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  • Iron-cobalt-nickel-copper-based high-entropy alloy water electrolysis catalytic material and preparation method thereof
  • Iron-cobalt-nickel-copper-based high-entropy alloy water electrolysis catalytic material and preparation method thereof
  • Iron-cobalt-nickel-copper-based high-entropy alloy water electrolysis catalytic material and preparation method thereof

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Embodiment 1

[0054] Preparation of FeCoNiCuSn HEA / CNFs Catalytic Materials for Electrolysis of Water

[0055] (1) Get 0.1mmol ferric chloride, 0.1mmol cobalt chloride, 0.1mmol nickel chloride, 0.1mmol cupric chloride, 0.1mmol tin chloride and 0.2g dicyandiamide to join 30g mass fraction and be 18wt% polypropylene In the nitrile / N,N-dimethylformamide solution, stir evenly by magnetic force, and then use the electrospinning method to spin the solution, control the spinning voltage to 15kV, and the distance from the receiving device to the pillow is 15cm, the solution The flow rate was 0.05 mL / min to obtain a mixed nanofiber membrane.

[0056] (2) Get 0.5g of the mixed nanofiber membrane prepared in step (1) and put it into a corundum boat, and place it in the middle of the tube furnace. Firstly, the temperature was raised to 230° C. at a heating rate of 20° C. / min, and kept for 3 hours in an air atmosphere. After the heat preservation is over, in an argon atmosphere, the temperature is rai...

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Abstract

The invention discloses an iron-cobalt-nickel-copper-based high-entropy alloy water electrolysis catalytic material and a preparation method thereof, and belongs to the technical field of composite material preparation. The water electrolysis catalytic material is composed of a reaction active matter and a carrier, wherein the reaction active matter is iron-cobalt-nickel-copper-tin, iron-cobalt-nickel-copper-manganese, iron-cobalt-nickel-copper-vanadium and other iron-cobalt-nickel-copper-based high-entropy alloy nanoparticles, and the carrier is a carbon nanofiber material prepared through anelectrostatic spinning method. The prepared water electrolysis catalytic material has a high specific surface area, diffusion of electrolytic solution and desorption of gas are facilitated, hydrogenand oxygen can be produced under an alkaline condition, and the hydrogen production rate under high voltage is far higher than that of a 20% Pt / C electrode; and carbon nanofibers can effectively protect the high-entropy alloy nanoparticles from being eroded by an electrolytic solution, so that the catalytic material is endowed with good stability.

Description

technical field [0001] The invention relates to an iron-cobalt-nickel-copper-based high-entropy alloy electrolytic water catalytic material and a preparation method thereof, belonging to the technical field of composite material preparation. Background technique [0002] Energy is an important material basis for human survival and the development of civilization. The depletion of fossil fuels such as oil, coal, and natural gas forces people to look for a renewable new energy with abundant reserves. Hydrogen energy is considered to be one of the most promising green energy sources in the 21st century because of its high combustion calorific value, non-polluting combustion products, and recyclable utilization. Therefore, the development of hydrogen energy has become one of the hotspots in the field of new energy research. Although hydrogen is the most common element in nature (accounting for about 75% of the mass of the universe), it is mainly stored in water in the form of co...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J23/847B01J23/835B01J35/06B01J37/08B01J37/34B01J35/10B82Y30/00B82Y40/00C25B11/06C25B1/04
CPCB01J23/8892B01J23/8472B01J23/835B01J37/082B01J37/341B82Y30/00B82Y40/00C25B1/04C25B11/069B01J35/33B01J35/59B01J35/61Y02E60/36
Inventor 朱罕张颂歌蔡剑李会林杜明亮
Owner JIANGNAN UNIV
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