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A preparation method of ruthenium/molybdenum disulfide/reduced graphene oxide@carbon fiber cloth catalytic electrode

A catalytic electrode, molybdenum disulfide technology, applied in electrodes, electrolysis components, electrolysis process and other directions, can solve the problems of poor conductivity of molybdenum disulfide, difficult desorption of hydrogen, overpotential, etc., to improve the effect and reduce the overpotential of hydrogen production , the effect of improving conductivity

Active Publication Date: 2021-05-11
DALIAN UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a catalytic and conductive bifunctional membrane electrode, which solves the problems of high overpotential, poor conductivity of molybdenum disulfide, and difficult desorption of hydrogen in the process of electrocatalytic hydrogen production.

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  • A preparation method of ruthenium/molybdenum disulfide/reduced graphene oxide@carbon fiber cloth catalytic electrode
  • A preparation method of ruthenium/molybdenum disulfide/reduced graphene oxide@carbon fiber cloth catalytic electrode
  • A preparation method of ruthenium/molybdenum disulfide/reduced graphene oxide@carbon fiber cloth catalytic electrode

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Embodiment Construction

[0022] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings.

[0023] 4.57g ammonium molybdate tetrahydrate (NH 4 ) 6 Mo 7 o 24 4H 2 O, 2.47g thiourea CH 4 N 2 S and 0.3g urea CO(NH 2 ) 2 Dissolve in 60ml of self-made 0.22g / l reduced graphene oxide, and ultrasonicate the mixture for 20min to obtain a uniform mixed solution; after weighing 7cm×12cm carbon fiber cloth, curl it to the wall and put it into a 100ml autoclave with polytetrafluoroethylene lining Then pour the above mixed solution into the reaction kettle, seal the reaction kettle; keep the temperature of the reaction kettle at 220°C for 24 hours, take it out, and cool it naturally; take out the prepared molybdenum disulfide / reduced graphene oxide@carbon fiber cloth catalytic electrode membrane , deionized water and ethanol alternate vacuum filtration and cleaning, and then dried in a vacuum drying oven at 60°C...

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Abstract

The invention provides a method for preparing a ruthenium / molybdenum disulfide / reduced graphene oxide@carbon fiber cloth catalytic electrode, which belongs to the technical field of energy utilization for hydrogen production by hydrolysis, and involves the application of a one-step hydrothermal synthesis method, which is prepared on a conductive substrate Supported molybdenum sulfide / reduced graphene oxide, and further chemical reduction and deposition of ruthenium to form a catalytic electrode with excellent electrocatalytic hydrogen production performance. In situ hydrothermal synthesis and chemical reduction deposition on the surface of carbon fiber cloth to prepare composite ruthenium / molybdenum disulfide / reduced graphene oxide high-performance catalytic and conductive bifunctional membrane electrodes. The bifunctional membrane electrode prepared by this method has good catalytic and conductive properties. The functional membrane is used as a material for electrocatalytic hydrogen production. The effect and benefit of the invention is that the catalytic and conductive bifunctional membrane electrode prepared by the method can significantly improve the effect of electrocatalytic hydrogen production. In the process of electrocatalytic hydrogen production, the overpotential of hydrogen production can be greatly reduced, the conductivity of molybdenum disulfide is improved, and hydrogen is more easily desorbed and escaped from the surface of the catalyst.

Description

technical field [0001] The invention belongs to the technical field of energy utilization technology, and relates to the preparation of supported molybdenum sulfide / reduced graphene oxide by a one-step hydrothermal synthesis method, and further chemical reduction and deposition of ruthenium to form a final catalytic electrode. Using carbon fiber cloth as a substrate, a catalytic and conductive bifunctional membrane electrode was prepared by in situ growth and chemical reduction deposition. The water is decomposed by electrocatalysis (EC) technology, and the operation of energy-based hydrogen production is carried out. Background technique [0002] Electrocatalytic hydrogen evolution reaction (Hydrogen evolution reaction, referred to as HER) refers to the use of catalysts to generate hydrogen by electrochemical means. During the reaction process, through the reduction of protons or water molecules, after undergoing the proton discharge step (or electrochemical step, Volmer r...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/052C25B11/065C25B11/093B22F9/24C25B1/04
CPCB22F9/24B22F2009/245C25B1/04C25B11/051C25B11/057C25B11/093Y02E60/36
Inventor 柳丽芬唐丽娜
Owner DALIAN UNIV OF TECH
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