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Electrochemical catalyst for oxygen evolution reaction, and preparation method and application thereof

An oxygen evolution reaction and catalyst technology, applied in the field of electrochemistry, can solve problems such as poor oxygen evolution performance, and achieve the effects of convenient operation, stable performance and energy saving

Active Publication Date: 2019-10-22
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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  • Electrochemical catalyst for oxygen evolution reaction, and preparation method and application thereof
  • Electrochemical catalyst for oxygen evolution reaction, and preparation method and application thereof
  • Electrochemical catalyst for oxygen evolution reaction, and preparation method and application thereof

Examples

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Effect test

Embodiment 1

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

[0031] (1) in the 0.3mol / L cadmium nitrate aqueous solution of 10ml, dropwise add 10ml sodium hydroxide aqueous solution, the concentration of sodium hydroxide solution is 0.6mol / L, after fully reacting, reaction product is centrifugally filtered, and water washing filtrate, Dry the filtrate at a drying temperature of 60°C for 12 hours to obtain cadmium hydroxide;

[0032] (2) Add 8 mg of cadmium hydroxide and 60 μl of Nafion solution to 2 ml of isopropanol, the concentration of Nafion solution is 5%, and ultrasonically mix for 1 hour to obtain a mixed solution. Take 10 μl of the mixed solution and apply it on the nickel foam , and the electrochemical oxygen evolution reaction catalyst was obtained after natural drying.

[0033] The SEM figure of cadmium hydroxide described in the present embodiment is as follows fi...

Embodiment 2

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

[0041] (1) Add 10ml of sodium hydroxide aqueous solution dropwise to the aqueous solution of 10ml of 0.3mol / L cadmium chloride, the concentration of sodium hydroxide solution is 0.6mol / L, after fully reacting, the reaction product is centrifugally filtered, washed with water and filtered matter, drying the filtrate at a drying temperature of 60°C for 12 hours to obtain cadmium hydroxide;

[0042] (2) Add 8 mg of cadmium hydroxide and 60 μl of Nafion solution to 2 ml of isopropanol, the concentration of Nafion solution is 5%, and ultrasonically mix for 1 hour to obtain a mixed solution. Take 10 μl of the mixed solution and apply it on the nickel foam , and naturally dried to obtain a cadmium hydroxide catalytic layer.

[0043] The SEM figure of the cadmium hydroxide described in the present embodiment is as follows f...

Embodiment 3

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

[0050] (1) In the aqueous solution of 0.3mol / L cadmium sulfate of 10ml, add 10ml sodium hydroxide aqueous solution dropwise, the concentration of sodium hydroxide solution is 0.6mol / L, after fully reacting, the reaction product is centrifuged and filtered, and the filter is washed with water , drying the filtrate at a drying temperature of 60°C for 12 hours to obtain cadmium hydroxide;

[0051] (2) Add 8 mg of cadmium hydroxide and 60 μl of Nafion solution to 2 ml of isopropanol, the concentration of Nafion solution is 5%, and ultrasonically mix for 1 hour to obtain a mixed solution. Take 10 μl of the mixed solution and apply it on the nickel foam , and naturally dried to obtain a cadmium hydroxide catalytic layer.

[0052] The SEM figure of the cadmium hydroxide described in the present embodiment is as follows fig...

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Abstract

The invention discloses an electrochemical catalyst for an oxygen evolution reaction, and a preparation method and an application thereof. The preparation method comprises the following steps: addinga cadmium salt to water, performing stirring to uniformity to obtain an aqueous cadmium salt solution, and dropwise adding an aqueous sodium hydroxide solution to the aqueous cadmium salt solution toperform a reaction in order to obtain flaky cadmium hydroxide, wherein a molar ratio of cadmium in the cadmium salt to sodium hydroxide in the aqueous sodium hydroxide solution is 1:2; and adding theobtained cadmium hydroxide and a Nafion solution to isopropanol, performing ultrasonic mixing to uniformity in order to obtain a mixed solution, coating foamed nickel with the mixed solution, and naturally air-drying the coated foamed nickel to obtain the electrochemical catalyst for the oxygen evolution reaction. The prepared electrochemical catalyst for the oxygen evolution reaction has the advantages of excellent electrocatalytic oxygen evolution performance, stable electrocatalytic oxygen evolution performance, suitableness for industrial application, and realization of the recycling 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 it is a substance that can be converted into fuel or power source required by human beings under certain conditions. It includes coal, oil, natural gas, water energy and other conventional energy sources, as well as solar energy, wind energy, biomass energy, ground 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 the most used at present, use less and cannot be regenerated. 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 the greenhouse effec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80C25B11/06C25B1/04
CPCB01J23/80C25B1/04C25B11/091B01J35/33Y02P20/133
Inventor 陈翔王浩楠孟汝汝裴立宅
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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