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Electrocatalysis of...
Electrocatalysis of hydrogen and oxygen electrode reactions in alkaline media by Rh-modified polycrystalline Ni electrode
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- Vasić, Ljubinka (författare)
- University of Belgrade – Faculty of Physical Chemistry, Studentski trg 12-16, 11000, Belgrade, Serbia
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- Tričković, Nikola (författare)
- University of Belgrade – Faculty of Physical Chemistry, Studentski trg 12-16, 11000, Belgrade, Serbia
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- Bošković, Zaharije (författare)
- University of Belgrade – Faculty of Physical Chemistry, Studentski trg 12-16, 11000, Belgrade, Serbia
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- Jovanović, Aleksandar Z. (författare)
- University of Belgrade – Faculty of Physical Chemistry, Studentski trg 12-16, 11000, Belgrade, Serbia
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- Vasiljević-Radović, Dana (författare)
- Center for Microelectronic Technologies, Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, Belgrade, 11000, Serbia
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- Skorodumova, Natalia V. (författare)
- Luleå tekniska universitet,Materialvetenskap
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- Mentus, Slavko V. (författare)
- University of Belgrade – Faculty of Physical Chemistry, Studentski trg 12-16, 11000, Belgrade, Serbia; Serbian Academy of Sciences and Arts, Kneza Mihaila 35, 11000, Belgrade, Serbia
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- Pašti, Igor A. (författare)
- University of Belgrade – Faculty of Physical Chemistry, Studentski trg 12-16, 11000, Belgrade, Serbia
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(creator_code:org_t)
- Elsevier Ltd, 2024
- 2024
- Engelska.
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Ingår i: Electrochimica Acta. - : Elsevier Ltd. - 0013-4686 .- 1873-3859. ; 505
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Developing novel electrocatalysts for energy conversion applications is of utmost importance for reaching the energy security of modern society. Here we present a comprehensive investigation of rhodium-modified polycrystalline nickel as an electrocatalyst for hydrogen and oxygen electrode reactions in alkaline media. The surface modification of nickel electrodes was achieved by facile galvanic displacement (up to 30 s) from a highly concentrated acidic Rh3+ solution. The results demonstrate a significant enhancement in the electrocatalytic activity for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) on the Rh-modified Ni electrodes, positioning galvanic displacement as a viable approach to engineering advanced electrocatalysts for clean energy applications. On the other hand, the hydrogen oxidation (HOR) and oxygen reduction reaction (ORR) activities of the Rh-modified electrodes are lower compared to polycrystalline platinum. It is suggested that semiconducting Rh2O3 has a detrimental role on the HOR and ORR performance, while the activities of HER and OER, dominantly taking place on metallic Rh and conductive RhO2, are very high. This research sheds light on the mechanisms underlying the enhanced electrode kinetics on Rh-modified Ni electrodes and provides insights into the development of efficient and cost-effective electrocatalysts for renewable energy technologies.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- Galvanic displacement; Nickel; Rhodium; Electrocatalysis; Water splitting
- Applied Physics
- Tillämpad fysik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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