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A kind of ruthenium oxide supported double metal hydroxide and its preparation method and application

A technology of double hydroxide and hydroxide, which is applied in the field of electrocatalysis, can solve the problems of inability to realize macro-preparation, few active sites, and small specific surface area, and achieve controllable morphology, high repeatability, large The effect of the reaction area

Active Publication Date: 2022-04-29
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing electrocatalyst preparation methods such as microwave heating and condensation reflux require continuous heating and other synthesis conditions, and cannot achieve macro-scale preparation. The prepared material has a small physical specific surface area and can provide fewer active sites

Method used

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  • A kind of ruthenium oxide supported double metal hydroxide and its preparation method and application
  • A kind of ruthenium oxide supported double metal hydroxide and its preparation method and application
  • A kind of ruthenium oxide supported double metal hydroxide and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0044] (1) Preparation: Add 50mL of water to the reactor, and heat the water to boiling to remove the dissolved gas in the water; The min gas flow is fed with nitrogen to make the water saturated with nitrogen;

[0045] As shown in Figure 1, the spiral gas path dispersion protection device used in the present invention includes a spiral gas path channel 1, and the gas path channel 1 is uniformly provided with vent holes 2; the head end of the gas path channel 1 is used to pass the gas flow The gauge 3 is connected to the gas supply device, and the end is blocked by a zeolite gas-liquid isolation material 4 .

[0046] (2) Prepare metal salt solution: take by weighing two kinds of transition metal salts of 10mM cobalt nitrate and 5mM vanadium chloride, dissolve in the water of the reactor to form a transparent solution, and the total concentration is 0.3mol / L;

[0047] (3) Preparation of oil-water mixed emulsion: 5 mL of toluene solvent was added to the solution obtained in ste...

Embodiment 2

[0052] The method of Example 1 was used to prepare the ruthenium oxide-supported double metal hydroxide, the only difference being that the gas flow rate in step (1) was 70 mL / min.

Embodiment 3

[0054] The method in Example 1 was used to prepare the ruthenium oxide-supported double metal hydroxide, the only difference being that the gas flow rate in step (1) was 100 mL / min.

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Abstract

The invention belongs to the technical field of electrocatalysis, and discloses a ruthenium oxide-loaded double metal hydroxide and its preparation method and application. The ruthenium oxide-loaded double metal hydroxide includes a chemical formula of Co (1‑x) V x (OH) 2 , (0.1≤x≤0.3) cobalt vanadium double hydroxide, the cobalt vanadium double hydroxide has a floc structure and the surface is uniformly loaded with ruthenium oxide of cluster size; its preparation method adopts a one-step oil-water emulsion mixing system The co-precipitation method is adopted, and the spiral gas path dispersion protection device is used to feed nitrogen or argon gas to assist; the ruthenium oxide-supported double metal hydroxide can be used in the electrocatalytic oxygen evolution or hydrogen evolution reaction. The invention has few layers of nanoscale, large material specific surface area, low electrochemical impedance, short process flow, simple equipment required, low energy consumption, and is suitable for factory large-scale production; it can be applied to electrolyzed water devices and air batteries, Catalytic oxygen evolution and hydrogen evolution performance is excellent.

Description

technical field [0001] The invention belongs to the technical field of electrocatalysis, and in particular relates to a double hydroxide and its preparation method and application. Background technique [0002] In order to get rid of the dependence of human activities on fossil fuels and alleviate the threat of environmental pollution and energy crisis, it is very important to develop green and low-carbon clean energy. Among them, new energy storage devices and water electrolysis technologies are very promising, and such technologies require the application of efficient electrocatalyst materials. Noble metal materials and their oxides, such as Pt, Pd, Ir, Ru, etc., have stable chemical activity and stability, and can be used for catalytic reactions such as electrocatalytic oxygen evolution (OER) or hydrogen evolution (HER). However, the scarcity and high price of precious metal resources limit their large-scale application. Therefore, non-noble metal electrocatalysts such ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/091C25B11/054C25B1/04B82Y30/00B82Y40/00C25B11/031C25B11/051
CPCC25B1/04Y02E60/36
Inventor 邓意达赵君田千秋韩晓鹏胡文彬
Owner TIANJIN UNIV