Cobalt oxide nanosheet chlorine evolution electrode, preparation method and application thereof

A technology for nanosheets and chlorine evolution electrodes is applied in the field of cobalt oxide nanosheet chlorine evolution electrodes and their preparation, which can solve the problems of high cost of electrode preparation, and achieve the effects of excellent electrocatalytic efficiency, high catalytic activity and simple conditions.

Active Publication Date: 2021-06-04
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the advantages of low overpotential and high chlorine evolution selectivity, ruthenium oxide and iridium oxide have become the first choice materials in commercial chlorine evolution electrodes, but due to the scarcity of ruthenium and iridium in the earth, the electrode preparation cost is expensive

Method used

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  • Cobalt oxide nanosheet chlorine evolution electrode, preparation method and application thereof
  • Cobalt oxide nanosheet chlorine evolution electrode, preparation method and application thereof
  • Cobalt oxide nanosheet chlorine evolution electrode, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A method for preparing a cobalt oxide nanosheet chlorine analysis electrode that is easy to industrialized production comprises the following steps:

[0036] (1) Ultrasonic cleaning of metal titanium mesh:

[0037] First cut with scissors to obtain a 1.0cm×2.0cm titanium metal mesh, then ultrasonically clean it with acetone, ethanol, and deionized water for 30 minutes, and finally place it in an ethanol solvent.

[0038] (2) Electrodeposition of cobalt hydroxide flakes:

[0039] The 0.1mol / L cobalt nitrate solution prepared in advance deposits cobalt hydroxide on the substrate by controlling the deposition voltage and deposition charge. The deposition voltage is controlled at -0.75V (vs.Ag / AgCl), and the deposition charge is controlled at 3.0C / cm 2 . Get Co(OH) 2 / Ti.

[0040] (3) Calcination to obtain Co 3 O 4 / Ti electrode:

[0041] Co(OH) prepared in step (2) 2 / Ti is placed in a muffle furnace, the heating rate is set to 5°C / min, and it is kept at 300°C for...

Embodiment 2

[0043] The preparation method is the same as that in Example 1, except that the change of annealing temperature in step (3) is 250°C.

Embodiment 3

[0045] The preparation method is the same as that in Example 1, except that the change of annealing temperature in step (3) is 350°C.

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Abstract

The invention relates to a cobalt oxide nanosheet chlorine evolution electrode, a preparation method and application thereof. The cobalt oxide nanosheet chlorine evolution electrode comprises a titanium substrate and cobalt oxide nanosheets grown on the titanium substrate, the chemical formula of cobalt oxide is Co3O4, the crystal structure of cobalt oxide is a cubic phase, cobalt oxide grows on the titanium substrate, and adjacent nanosheets are connected in a penetrating manner. And the thickness of the cobalt oxide nanosheets is 20-30nm. The preparation method comprises the following steps of: mixing a metal titanium mesh with a cobalt salt solution to carry out electro-deposition reaction, and depositing cobalt hydroxide (Co(OH)2/Ti) on the surface of the titanium mesh; and then calcining the Co(OH)2/Ti to obtain the Co3O4/Ti electrode. The electrode has excellent electro-catalysis efficiency and has a good application prospect in the field of hydrogen evolution.

Description

technical field [0001] The invention belongs to the technical field of energy and electrochemistry, and in particular relates to a cobalt oxide nano-sheet chlorine analysis electrode and a preparation method and application thereof. Background technique [0002] The information disclosed in this Background section is only for enhancement of understanding of the general background of the invention and should not necessarily be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art. [0003] In industry, the method of electrolysis of saturated sodium chloride solution is used to produce chlorine, hydrogen and sodium hydroxide, and a series of chemical products are produced with them as raw materials. This process is called chlor-alkali industry for short, and it is one of the most basic chemical industries. . These products have a wide range of applications, in addition to the chem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/031C25B11/063C25B11/077C25B11/054C25D9/04C25B1/55C25B1/02C25B1/34B82Y30/00B82Y40/00
CPCC25D9/04C25B1/02C25B1/34B82Y30/00B82Y40/00
Inventor 王朋黄柏标王泽岩张晓阳刘媛媛郑昭科张倩倩程合锋
Owner SHANDONG UNIV
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