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A kind of precious metal rhodium hydrogen evolution electrocatalyst and application

An electrocatalyst, precious metal technology, applied in electrodes, electrolysis components, electrolysis process, etc., can solve the problem of less research on Rh-based electrocatalytic catalysts, and achieve the effect of excellent electrochemical performance and low Rh content

Active Publication Date: 2022-01-04
WENZHOU UNIV
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  • Abstract
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Problems solved by technology

However, as far as is known from the literature reported at this stage, there are few studies on the synthesis of Rh-based electrocatalysts by mild methods.

Method used

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  • A kind of precious metal rhodium hydrogen evolution electrocatalyst and application
  • A kind of precious metal rhodium hydrogen evolution electrocatalyst and application
  • A kind of precious metal rhodium hydrogen evolution electrocatalyst and application

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] 1. Pretreatment of Glassy Carbon Electrodes

[0028] First, wipe the glassy carbon electrode with alcohol-moistened cotton, and then use polishing powders of different particle sizes (aluminum oxide, Al 2 o 3 ) (grain size: d = 0.3 μm, d = 0.05 μm) wetted on a polishing cloth for polishing. After each polishing session, the electrode is rinsed with ultrapure water before continuing with polishing. The final polishing step is performed on a polishing cloth with ultrapure water only. Polish for about 1.5 minutes each time, 3 times in total. After polishing, the glassy carbon electrode was placed in ultrapure water and ethanol solution for 30 s of ultrasonication. Finally, dry the surface of the glassy carbon electrode (using high-purity N 2 Airflow), le...

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Abstract

The invention belongs to the field of hydrogen evolution catalytic materials for electrolysis of water, in particular to a noble metal rhodium hydrogen evolution electrocatalyst and its application. The present invention prepares rhodium oxide-nickel-based phosphate-carbon carrier through the mild synthesis method of two-step electrodeposition, and has a lower Rh content. The results of electrochemical experiments show that the rhodium oxide-nickel-based phosphate-carbon support exhibits excellent electrochemical performance for HER, which is comparable to that of commercial Pt / C catalysts.

Description

technical field [0001] The invention belongs to the field of hydrogen evolution catalytic materials for electrolysis of water, in particular to a noble metal rhodium hydrogen evolution electrocatalyst and its application. Background technique [0002] The environmental consequences of fossil fuel consumption and carbon dioxide emissions have forced major efforts to develop a new renewable material at a scale sufficient to replace fossil fuels and meet the growing global energy consumption demands. Exploring effective production strategies to synthesize molecular hydrogen has become an upsurge. Aided by highly active non-noble metal electrocatalysts, electrolyzed water is emerging as a promising candidate for the production of low-cost, high-purity hydrogen. The theoretically described Gibbs free energy of hydrogen adsorption is related to (ΔG H ) usually correlates with catalyst activity. Today, however, platinum (Pt) and its alloys have a ΔG close to zero H , has the hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/091C25B1/04C25B11/054C25B11/065C25D9/04
CPCC25B1/04C25B11/04C25D9/04Y02E60/36
Inventor 杨植郑仙诺陈倩倩张潇栋金玉威周学梅
Owner WENZHOU UNIV
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