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Carbon-supported nickel oxide modified platinum rhodium nanorod electrocatalyst for alkaline hydrogen evolution reaction and preparation method and application thereof

An electrocatalyst, nickel oxide technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, chemical instrument and method, etc., can solve the problem of incapable of large-scale production, complicated preparation process and synthesis cost Advanced problems, to achieve the effect of easy large-scale production, simple and easy preparation process, and low synthesis cost

Active Publication Date: 2020-05-01
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process is complicated and requires many kinds of toxic and harmful organic reagents (Li Baojun, Zhang Xinwen, Liu Yanyan, Zhengzhou University, application number: 201810198619.6)
In addition, there is no patent report for the preparation of carbon-supported nickel oxide-modified platinum-rhodium nanorod electrocatalysts for alkaline hydrogen evolution reactions.
[0005] In summary, the synthesis methods of alkaline hydrogen evolution catalysts in the reported articles or reported patents mostly have complex preparation process, use of various toxic and harmful organic reagents, poor durability, high synthesis cost, and inability to The problem with mass production

Method used

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  • Carbon-supported nickel oxide modified platinum rhodium nanorod electrocatalyst for alkaline hydrogen evolution reaction and preparation method and application thereof
  • Carbon-supported nickel oxide modified platinum rhodium nanorod electrocatalyst for alkaline hydrogen evolution reaction and preparation method and application thereof
  • Carbon-supported nickel oxide modified platinum rhodium nanorod electrocatalyst for alkaline hydrogen evolution reaction and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] (1) Preparation of nickel oxide-modified platinum-rhodium nanorods

[0045] Pt(acac) 2 (10.0mg), Ni(acac) 3 (6.9 mg), Rh(acac) 3 (1.0 mg), Mo(CO) 6 (10.0mg), DDAB (30.0mg), add 5mL oleylamine. The air in the reactor was replaced with a flow of argon for 10 minutes. After covering the reaction cap, the reactor was ultrasonicated for half an hour to obtain a transparent and uniform solution. Then the temperature was raised to 180° C. within half an hour, then kept at a temperature of 8 hours, and then naturally cooled to room temperature. After the reaction, the product was collected by centrifugation, then cyclohexane and ethanol (1mL:5mL) solution was added to redisperse, and the product was collected by centrifugation again, and the operation was repeated to clean the organic matter adsorbed on the surface of the catalyst. Finally, the obtained catalyst was dispersed in cyclohexane solution for later use.

[0046] Such as figure 1 , TEM results showed that the ...

Embodiment 2

[0056] (1) Preparation of nickel oxide-modified platinum nanorods

[0057] Pt(acac) 2 (10.0mg), Ni(acac) 3 (6.9 mg), Mo(CO) 6 (10.0mg), DDAB (30.0mg), add 5mL oleylamine. The air in the reactor was replaced with a flow of argon for 10 minutes. After covering the reaction cap, the reactor was ultrasonicated for half an hour to obtain a transparent and uniform solution. Then the temperature was raised to 180° C. within half an hour, then kept at a temperature of 8 hours, and then naturally cooled to room temperature. After the reaction, the product was collected by centrifugation, then cyclohexane and ethanol (1mL:5mL) solution was added to redisperse, and the product was collected by centrifugation again, and the operation was repeated to clean the organic matter adsorbed on the surface of the catalyst. Finally, the obtained catalyst was dispersed in cyclohexane solution for later use.

[0058] Such as Figure 5 , TEM results show that the product morphology obtained is ...

Embodiment 3

[0063] (1) Preparation of nickel oxide-modified platinum nanorods

[0064] Pt(acac) 2 (10.0mg), Ni(acac) 3 (4.6 mg), Mo(CO) 6 (10.0mg), DDAB (30.0mg), add 5mL oleylamine. The air in the reactor was replaced with a flow of argon for 10 minutes. After covering the reaction cap, the reactor was ultrasonicated for half an hour to obtain a transparent and uniform solution. Then the temperature was raised to 180° C. within half an hour, then kept at a temperature of 8 hours, and then naturally cooled to room temperature. After the reaction, the product was collected by centrifugation, then cyclohexane and ethanol (1mL:5mL) solution was added to redisperse, and the product was collected by centrifugation again, and the operation was repeated to clean the organic matter adsorbed on the surface of the catalyst. Finally, the obtained catalyst was dispersed in cyclohexane solution for later use.

[0065] (2) Preparation of carbon-supported nickel oxide-modified platinum nanorods

...

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Abstract

The invention discloses a carbon-supported nickel oxide-modified ultrafine platinum rhodium nanorod alloy electrocatalyst for an alkaline hydrogen evolution reaction and a preparation method and application thereof, and belongs to the technical field of hydrogen evolution of alkaline electrolyzed water. Platinum salt is used as a platinum source, cobalt salt is used as a cobalt source, rhodium salt is used as a rhodium source, and a nickel oxide-modified ultrafine platinum rhodium nanorod is generated through reduction under the action of an organic solvent and a structure directing agent. According to the invention, the morphology and components of the catalyst are controlled by controlling the reaction temperature, the type and concentration of the structure directing agent and the reaction atmosphere, and the preparation condition facilitating the nickel oxide-modified ultrafine platinum rhodium nanorod to show the most excellent hydrogen evolution activity is explored and obtained.The preparation method is simple and convenient in technological process, low in synthesis cost and beneficial to batch production. The nickel oxide-modified ultrafine platinum rhodium nanorod prepared by adopting the method has the excellent hydrogen evolution performance and is suitable for hydrogen evolution reaction of alkaline electrolyzed water.

Description

technical field [0001] The invention belongs to the technical field of metal electrocatalysts, and relates to a nickel oxide-modified platinum-rhodium nanorod electrocatalyst loaded on carbon for alkaline hydrogen evolution reaction, a preparation method and application thereof. Background technique [0002] Excessive reliance on the use of traditional fossil energy will exacerbate environmental pollution, greenhouse effect, and fossil energy depletion. Therefore, the development of clean and sustainable energy to replace traditional fossil energy is a top priority. Among various alternative energy strategies, hydrogen energy is considered to be an ideal clean energy and energy storage carrier due to its advantages of high energy density, clean and non-polluting products. The construction of energy infrastructure with hydrogen as the main carrier and the development of extensive utilization of hydrogen energy can connect a variety of new energy sources with hydrogen energy t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J35/00B01J35/02C25B1/04C25B11/06
CPCB01J23/892C25B1/04C25B11/097B01J35/50B01J35/33Y02E60/36
Inventor 宋玉江王学良王盛杰
Owner DALIAN UNIV OF TECH
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