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An electrochemical catalyst for oxygen evolution reaction, preparation method and application

A technology of oxygen evolution reaction and catalyst, which is applied in the field of electrochemistry, can solve the problems of poor oxygen evolution performance, and achieve the effects of convenient operation, simple preparation process and stable performance

Active Publication Date: 2022-07-12
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the electrocatalytic oxygen evolution performance of the existing catalyst for oxygen evolution reaction is poor, and an electrochemical catalyst for oxygen evolution reaction, preparation method and application are provided

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  • An electrochemical catalyst for oxygen evolution reaction, preparation method and application
  • An electrochemical catalyst for oxygen evolution reaction, preparation method and application
  • An electrochemical catalyst for oxygen evolution reaction, preparation method and application

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Embodiment 1

[0030] The present embodiment provides a preparation method of an electrochemical oxygen evolution reaction catalyst, which specifically includes the following steps:

[0031] (1) 10ml of sodium hydroxide aqueous solution was added dropwise to the 0.3mol / L cadmium nitrate aqueous solution of 10ml, and the concentration of the sodium hydroxide solution was 0.6mol / L. After fully reacting, the reaction product was centrifugally filtered, and the filtrate was washed with water, Dry the filtrate at a drying temperature of 60°C for 12h to obtain cadmium hydroxide;

[0032] (2) Add 8 mg of cadmium hydroxide and 60 μl of Nafion solution to 2 ml of isopropanol, and the mass percentage concentration of Nafion solution is 5%. After ultrasonic mixing for 1 hour, a mixed solution is obtained, and 10 μl of the mixed solution is applied to foam nickel , and the catalyst for electrochemical oxygen evolution reaction was obtained after natural drying.

[0033] The SEM image of cadmium hydroxi...

Embodiment 2

[0040] The present embodiment provides a preparation method of an electrochemical oxygen evolution reaction catalyst, which specifically includes the following steps:

[0041] (1) 10ml of aqueous sodium hydroxide solution was added dropwise to the aqueous solution of 10ml of 0.3mol / L cadmium chloride, the concentration of the sodium hydroxide solution was 0.6mol / L, after sufficient reaction, the reaction product was centrifugally filtered, washed with water and filtered The filtrate was dried, and the drying temperature was 60 °C for 12 h to obtain cadmium hydroxide;

[0042] (2) Add 8 mg of cadmium hydroxide and 60 μl of Nafion solution to 2 ml of isopropanol, and the mass percentage concentration of Nafion solution is 5%. After ultrasonic mixing for 1 hour, a mixed solution is obtained, and 10 μl of the mixed solution is applied to foam nickel , air-drying naturally to obtain a cadmium hydroxide catalytic layer.

[0043] The SEM image of the cadmium hydroxide described in t...

Embodiment 3

[0049] The present embodiment provides a preparation method of an electrochemical oxygen evolution reaction catalyst, which specifically includes the following steps:

[0050] (1) 10ml of aqueous sodium hydroxide solution was added dropwise to the aqueous solution of 10ml of 0.3mol / L cadmium sulfate, the concentration of the sodium hydroxide solution was 0.6mol / L, after sufficient reaction, the reaction product was centrifugally filtered, and the filtrate was washed with water , drying the filtrate at a drying temperature of 60°C for 12h to obtain cadmium hydroxide;

[0051] (2) Add 8 mg of cadmium hydroxide and 60 μl of Nafion solution to 2 ml of isopropanol, and the mass percentage concentration of Nafion solution is 5%. After ultrasonic mixing for 1 hour, a mixed solution is obtained, and 10 μl of the mixed solution is applied to foam nickel , air-drying naturally to obtain a cadmium hydroxide catalytic layer.

[0052] The SEM image of the cadmium hydroxide described in th...

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Abstract

The invention discloses an electrochemical catalyst for oxygen evolution reaction, a preparation method and application, comprising the following steps: adding cadmium salt into water, stirring uniformly to obtain a cadmium salt aqueous solution, and then adding hydrogen hydroxide dropwise to the cadmium salt aqueous solution The sodium aqueous solution reacts to obtain lamellar cadmium hydroxide, and the ratio of the amount of cadmium in the cadmium salt to the amount of sodium hydroxide in the sodium hydroxide aqueous solution is 1:2; the obtained cadmium hydroxide and Nafion The solution was added to isopropanol, and ultrasonically mixed to obtain a mixed solution. The mixed solution was coated on foam nickel, and air-dried to obtain an electrochemical oxygen evolution reaction catalyst. The prepared electrochemical oxygen evolution reaction catalyst has excellent electrocatalytic oxygen evolution reaction catalyst. Oxygen performance, and electrocatalytic oxygen evolution performance are stable, suitable for industrial application, and realize the renewable utilization of resources and energy.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry, and in particular relates to an electrochemical catalyst for an oxygen evolution reaction, a preparation method and an application. Background technique [0002] Energy is the source of energy, and is a substance that can be converted into fuel or power source required by human beings under certain conditions. It includes conventional energy such as coal, oil, natural gas, and water energy, as well as solar energy, wind energy, biomass energy, land New energy sources such as thermal energy, ocean energy and nuclear energy. Some energy reserves are very limited, such as coal and oil, which are currently the most used, and cannot be regenerated with a little less. Therefore, energy shortage is one of the important problems and challenges facing human society today. [0003] In addition, the use of traditional fossil energy is also the main cause of air pollution and greenhouse effect, so ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/075C25B1/04
CPCB01J23/80B01J35/0033C25B1/04C25B11/091Y02P20/133
Inventor 陈翔王浩楠孟汝汝裴立宅
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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