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MOF compounded copper-based nanorod array@foam copper based composite electrode material, preparation method and application thereof

A nanorod array and composite electrode technology, applied in the direction of electrodes, nanotechnology, chemical instruments and methods, etc., can solve the problems of poor catalytic activity and stability, achieve good stability, improve stability, and simple preparation process

Active Publication Date: 2019-10-15
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, catalysts for oxygen evolution reaction under alkaline conditions have problems such as poor catalytic activity and stability, and further research is needed.

Method used

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  • MOF compounded copper-based nanorod array@foam copper based composite electrode material, preparation method and application thereof
  • MOF compounded copper-based nanorod array@foam copper based composite electrode material, preparation method and application thereof
  • MOF compounded copper-based nanorod array@foam copper based composite electrode material, preparation method and application thereof

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Effect test

Embodiment 1

[0031] The preparation of a MOF composite copper-based nanorod array@foamed copper-based composite electrode material comprises the following steps:

[0032] a. Pretreatment of foamed copper: Take foamed copper, cut it into 1cm×2cm size, put it in a beaker, add absolute ethanol to submerge, pour out absolute ethanol after ultrasonication for 15min, add 1mol / L dilute hydrochloric acid until submerged After 15 minutes of ultrasonication, rinse with water and set aside.

[0033] b. First, prepare the precursor solution: measure 30mL of deionized water and put it in a beaker, then add 1.64g (7.2mmol) of ammonium persulfate, stir and sonicate for 15min, and wait until it is completely dissolved; measure 30mL of deionized water and place In a beaker, add 10.1 g (180 mmol) of potassium hydroxide, stir and sonicate for 15 min until completely dissolved, then add ammonium persulfate solution, and stir evenly to obtain the precursor solution. Then, in the precursor solution, add the co...

Embodiment 2

[0038] The preparation of a MOF composite copper-based nanorod array@foamed copper-based composite electrode material comprises the following steps:

[0039] a. Pretreatment of foamed copper: Take foamed copper, cut it into 1cm×2cm size, put it in a beaker, add absolute ethanol to submerge, pour out absolute ethanol after ultrasonication for 15min, add 1mol / L dilute hydrochloric acid until submerged , after 20 minutes of ultrasonication, rinse with water and set aside.

[0040] b. First, prepare the precursor solution: measure 30mL of deionized water and put it in a beaker, then add 1.64g (7.2mmol) of ammonium persulfate, stir and sonicate for 15min, and wait until it is completely dissolved; measure 30mL of deionized water and place In the beaker, then add 20.2 g (360 mmol) of potassium hydroxide, stir and sonicate for 15 min, until it is completely dissolved, add ammonium persulfate solution, and stir evenly to obtain the precursor solution. Then, add the copper foam treate...

Embodiment 3

[0044] The preparation of a MOF composite copper-based nanorod array@foamed copper-based composite electrode material comprises the following steps:

[0045] a. Pretreatment of foamed copper: Take foamed copper, cut it into 1cm×2cm size, put it in a beaker, add absolute ethanol to submerge, pour out absolute ethanol after ultrasonication for 15min, add 1mol / L dilute hydrochloric acid until submerged , after 20 minutes of ultrasonication, rinse with water and set aside.

[0046] b. First, prepare the precursor solution: measure 30mL of deionized water and put it in a beaker, then add 1.64g (7.2mmol) of ammonium persulfate, stir and sonicate for 15min, and wait until it is completely dissolved; measure 30mL of deionized water and place In the beaker, then add 20.2 g (360 mmol) of potassium hydroxide, stir and sonicate for 15 min, until it is completely dissolved, add ammonium persulfate solution, and stir evenly to obtain the precursor solution. Then, in the precursor solution,...

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Abstract

The invention discloses a MOF compounded copper-based nanorod array@foam copper based composite electrode material, a preparation method and application thereof. The MOF compounded copper-based nanorod array@foam copper based composite electrode material is characterized in that foam copper is adopted as the substrate, and a MOF compounded copper hydroxide nanorod array grows on the surface of thefoam copper, wherein the MOF is ZIF-67. The preparation method includes: directly growing the nanorod array of Cu(OH)2 on the foam copper substrate by in-situ synthesis, then adopting the Cu(OH)2 nanorod array as the substrate for template orientated growth of MOF particles on the surface, and finally performing dehydration treatment to obtain the electrode material with electrocatalytic performance. The composite material has stable performance in an alkaline condition, has high reusability and large electrochemical active area, and the catalytic activity of the material is greatly improved.The preparation method has the characteristics of simple preparation process, low sintering temperature, and low energy consumption in the preparation process, and is convenient for industrial production.

Description

technical field [0001] The invention relates to a MOF composite copper-based nanorod array@foamed copper-based composite electrode material and its preparation method and application, belonging to the technical field of electrolytic water catalysis for oxygen evolution. Background technique [0002] As the cornerstone of various production activities in human society, energy is the most important driving force for the development of human productivity. From ancient times to the present, fossil energy has been the main source of energy used by human beings, and its consumption rate has become faster and faster with the development of human beings. Especially since entering the industrialized society, the existing reserves will be exhausted within a few centuries. The consumption of fossil energy has also brought about environmental pollution. Therefore, the development of sustainable and clean alternative energy is a top priority. Since the hydrogen combustion process can re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B11/06B01J31/28B82Y40/00
CPCC25B1/04B01J31/28B82Y40/00C25B11/095C25B11/051B01J35/33Y02E60/36
Inventor 喻发全李攀王建芝谌伟民蔡宁
Owner WUHAN INSTITUTE OF TECHNOLOGY
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