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A kind of preparation method of alloy hydrogen evolution electrode loaded on foam transition metal

A transition metal and hydrogen evolution electrode technology, applied in the direction of electrodes, electrode shape/type, metal material coating process, etc., can solve the problems of waste liquid pollution of the environment, achieve mature and stable processes, increase the reaction contact area, and reduce costs.

Active Publication Date: 2020-08-04
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] According to the Brewer-Engel valence bond theory, metal elements with empty or semi-filled d orbitals form alloys with metal elements with d electrons greater than the number of d orbitals, which will produce electrocatalytic synergy for the hydrogen evolution reaction. A large number of transition metal bases Molybdenum alloys such as Ni-Mo alloys and Fe-Mo alloys are used as hydrogen evolution electrode materials. However, hydrothermal synthesis, electrodeposition and other methods are currently used, which will produce waste liquid and pollute the environment during the preparation process. Therefore, it is urgent to find a preparation method. Simple process, environmentally friendly and pollution-free, easy to operate and large-scale preparation of transition metal-based molybdenum alloy hydrogen evolution electrode preparation method

Method used

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  • A kind of preparation method of alloy hydrogen evolution electrode loaded on foam transition metal
  • A kind of preparation method of alloy hydrogen evolution electrode loaded on foam transition metal
  • A kind of preparation method of alloy hydrogen evolution electrode loaded on foam transition metal

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Embodiment 1

[0024] A method for preparing an electrode prepared by a molybdenum-nickel-molybdenum alloy hydrogen evolution electrode loaded on nickel foam according to the present invention is carried out according to the following steps:

[0025] A. Degreasing and pickling the three-dimensional porous nickel-based electrode: first soak in NaOH solution with a mass fraction of less than 40% for 10-20 minutes, take it out and rinse it with deionized water for 3-5 times, and then put it in the mass Soak in hydrochloric acid solution with a fraction lower than 20% for 10-20 minutes, then take it out and rinse it with ultrapure water, place it in an oven at 80°C, and dry it for 3 hours before use;

[0026] B. Place the dried three-dimensional porous nickel foam as a base material in a glow plasma metallization furnace. The three-dimensional foam transition metal has a porosity of 80% and a purity of 99.9%. A molybdenum plate with a purity of 99.99% is used as the splash Shooting targets, nick...

Embodiment 2

[0033] A method for preparing an electrode prepared by a molybdenum-cobalt molybdenum alloy hydrogen evolution electrode loaded on cobalt foam according to the present invention is carried out according to the following steps:

[0034] A. Degreasing and pickling the three-dimensional porous cobalt foam electrode: first soak in NaOH solution with a mass fraction of less than 40% for 10-20 minutes, take it out and rinse it with deionized water for 3-5 times, and then put it in the mass Soak in a boric acid solution with a fraction lower than 20% for 10-20 minutes, then take it out and rinse it with ultrapure water, place it in an oven at 80°C, and dry it for 3 hours before use;

[0035] B. Put the dried three-dimensional porous cobalt foam as the base material into the glow plasma metallization furnace. The porosity of the three-dimensional foam transition metal is 85%, the purity is 99.9%, and the molybdenum plate with a purity of 99.99% is used as the splash For shooting targe...

Embodiment 3

[0037] A method for preparing an electrode prepared by a molybdenum-iron-molybdenum alloy hydrogen evolution electrode loaded on iron foam according to the present invention is carried out according to the following steps:

[0038] A. Degreasing and pickling the three-dimensional porous foam iron matrix electrode: first soak in NaOH solution with a mass fraction of less than 40% for 10-20 minutes, take it out and rinse it with deionized water for 3-5 times, and then put it in the mass Soak in a dilute acid solution with a fraction lower than 20% for 10-20 minutes, then take it out and rinse it with ultrapure water, place it in an oven at 80°C, and dry it for 3 hours before use;

[0039]B. Put the dried three-dimensional porous iron foam as the substrate into the glow plasma metallization furnace. The porosity of the three-dimensional foam transition metal is 98%, the purity is 99.9%, and the molybdenum plate with the purity of 99.99% is used as the splash Shooting targets, foa...

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Abstract

The invention discloses a preparation method of an alloy hydrogen evolution electrode loaded on foam transition metal. The preparation method includes: subjecting the three-dimensional foam transitionmetal to deoiling, pickling and drying; taking the three-dimensional foam transition metal as a base material placed in a glow plasma metallizing furnace and using a molybdenum plate with the purityof 99.99% as a sputter target material; cleaning and cooling to room temperature, and generating a molybdenum-molybdenum transition metal alloy hydrogen evolution electrode on the surface of the foamtransition metal. The obtained hydrogen evolution electrode is high in catalytic activity, large in specific area and good in electrical conductivity can can maintain stable structure and chemical activity under acidic, neutral and alkaline conditions, and most importantly, the preparation method is simple in process, low in cost, easy to control and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a glow plasma infiltration process, a method for preparing a molybdenum-molybdenum transition metal alloy on the surface of a foamed transition metal, which belongs to the field of chemical electrocatalysis to prepare hydrogen and material science and technology, and specifically relates to a method for preparing a molybdenum-molybdenum transition metal alloy on the surface of a foamed transition metal. A method for preparing an alloy hydrogen evolution electrode. Background technique [0002] The technology of electrolysis of water can be traced back to 1789. Deiman and Troostwijk first observed that water can be electrolyzed into hydrogen and oxygen. This method can obtain very high-purity hydrogen. Water electrolysis is an important means to realize the industrialization and cheap production of hydrogen, but in the process of electrolysis, the energy barrier of hydrogen evolution reaction process in the cathode part is high,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/03C25B11/06C23C10/08C25B1/04
CPCC23C10/08C25B1/04C25B11/04C25B11/031Y02E60/36
Inventor 刘文娜叶羽敏石枭杨汇东
Owner NINGBO UNIV
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