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Electrocatalysis of hydrogen evolution reaction on tri-metallic Rh@Pd/Pt(poly) electrode

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2018
Authors
Smiljanić, Milutin
Rakočević, Zlatko Lj.
Štrbac, Svetlana
Article (Published version)
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Abstract
Hydrogen evolution reaction (HER) was investigated in alkaline solution on tri-metallic Rh"Pd/Pt(poly) electrode, prepared by spontaneous deposition of Rh on top of Pd/Pt(poly) electrode with intermediate Pd coverage of 35%. Characterization of tri-metallic catalyst was performed by electrochemical methods of cyclic voltammetry and CO stripping voltammetry, while its activity for HER was tested by linear sweep voltammetry in 0.1 M NaOH. Rh"Pd/Pt(poly) catalyst has shown superior catalytic activity for HER with respect to initial Pt(poly) and both corresponding bimetallic Pd/Pt(poly) and Rh/Pt(poly) electrodes. This was explained by a strong synergistic electronic interaction between three metals in close contact induced at a number of different active sites across the surface of tri-metallic catalyst, which results with lowering of the binding energy for the adsorption of H intermediate species.
Keywords:
Platinum / Palladium / Rhodium / Tri-metallic electrode / Hydrogen evolution
Source:
International Journal of Hydrogen Energy, 2018, 43, 5, 2763-2771
Publisher:
  • Pergamon-Elsevier Science Ltd, Oxford
Projects:
  • Functional, Functionalized and Advanced Nanomaterials (RS-45005)

DOI: 10.1016/j.ijhydene.2017.12.112

ISSN: 0360-3199

WoS: 000425563200020

Scopus: 2-s2.0-85040351742
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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/2330
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IHTM

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