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Rod-like ruthenium particle/selenide composite catalyst as well as preparation method and application thereof

A composite catalyst, selenide technology, applied in the direction of electrode shape/type, electrolysis components, electrodes, etc., can solve the problems of reducing utilization rate and quality activity, and achieves improved oxygen evolution performance, low cost, and simple and easy-to-understand preparation method. Effect

Active Publication Date: 2021-12-14
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this design shows good catalytic activity, the metal Ru coated with carbonitride makes only the metal on the surface participate in the reaction and the metal inside cannot directly participate in the reaction, which reduces the utilization rate of Ru and leads to a decrease in mass activity.

Method used

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  • Rod-like ruthenium particle/selenide composite catalyst as well as preparation method and application thereof
  • Rod-like ruthenium particle/selenide composite catalyst as well as preparation method and application thereof
  • Rod-like ruthenium particle/selenide composite catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A preparation method of a rod-shaped ruthenium particle / selenide compound catalyst is realized in the following steps:

[0042] (1) Preparation of foamed nickel material: Wash foamed nickel (3×2cm 2 ), to remove the oxide layer on the foamed nickel surface;

[0043] (2) Preparation of selenide material on nickel foam: add Se powder (0.078g) to NaBH 4 (0.086g) in deionized water (2.0mL); after stirring gently for a few minutes, a reddish-brown transparent solution was obtained, and ethanol (18mL) was added to the solution, and then the solution was transferred to a polytetrafluoroethylene-lined stainless steel autoclave. , the autoclave contains a piece of pretreated nickel foam, and then the autoclave is put into an electric furnace and heated at 140°C for 12 hours to obtain NiSe / NF. Dry for 8 hours;

[0044] (3) Preparation of Ru@NiSe heterojunction composite electrode material: the rod-shaped NiSe precursor was immersed in 4 mg mL -1 RuCl 3 The solution was soake...

Embodiment 2

[0046] The difference between this embodiment and embodiment 1 is that the RuCl immersed in step (3) 3 The solution concentration is 2mg mL -1 , other parameters and specific implementation steps are the same as in Example 1.

Embodiment 3

[0048] The difference between this embodiment and embodiment 1 is that the RuCl immersed in step (3) 3 The solution concentration is 6mg mL -1 , other parameters and specific implementation steps are the same as in Example 1.

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Abstract

The invention discloses a rod-like ruthenium particle / selenide composite catalyst and a preparation method and application thereof, belonging to the technical field of new energy materials and electrochemical energy storage. The preparation method comprises the following steps: mixing selenium powder, NaBH4 and deionized water, and conducting stirring at room temperature to obtain a NaHSe solution; then transferring the NaHSe solution, ethanol and foamed nickel into a reaction kettle, and synthesizing a NiSe / NF material by using a hydrothermal method; and treating the NiSe / NF material and RuCl3 through an etching method to prepare the rod-like ruthenium particle / selenide composite catalyst Ru@NiSe. According to the invention, a simple chemical bath and etching method is designed to prepare the rod-like ruthenium nanoparticle / selenide composite material, and the rod-like ruthenium nanoparticle / selenide composite material shows lower overpotential and good stability in hydrogen evolution and oxygen evolution reactions, and is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of new energy materials and electrochemical energy storage, relates to a preparation method of an inorganic nanometer catalytic material, and specifically discloses a preparation method of a rod-shaped ruthenium particle / selenide composite catalyst. Background technique [0002] With the increasing world energy crisis and the drastic changes brought about by the climate, the earth is facing increasingly serious environmental problems. Exploring clean and renewable energy that can be applied on a large scale has become an urgent problem to be solved. For most renewable energy, such as solar energy , wind energy, etc. are all intermittent, but hydrogen production by electrolysis of water is considered to be an effective strategy to develop clean and sustainable new energy, and has received more and more attention from the world in the field of hydrogen production. Catalysts with high activity and long-term sta...

Claims

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Application Information

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IPC IPC(8): C25B11/031C25B11/02C25B11/061C25B11/091C25B1/04
CPCC25B11/031C25B11/02C25B11/061C25B11/091C25B1/04Y02E60/36Y02P20/133
Inventor 王春栋琚君李林峰
Owner HUAZHONG UNIV OF SCI & TECH