Journal ArticleDOI
Electrocatalytic Oxygen Evolution Reaction (OER) on Ru, Ir, and Pt Catalysts: A Comparative Study of Nanoparticles and Bulk Materials
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In this article, the intrinsic catalytic activity and durability of carbon supported Ru, Ir, and Pt nanoparticles and corresponding bulk materials for the electrocatalytic oxygen evolution reaction (OER) were examined by surface-sensitive cyclic voltammetry.Abstract:
A comparative investigation was performed to examine the intrinsic catalytic activity and durability of carbon supported Ru, Ir, and Pt nanoparticles and corresponding bulk materials for the electrocatalytic oxygen evolution reaction (OER). The electrochemical surface characteristics of nanoparticles and bulk materials were studied by surface-sensitive cyclic voltammetry. Although basically similar voltammetric features were observed for nanoparticles and bulk materials of each metal, some differences were uncovered highlighting the changes in oxidation chemistry. On the basis of the electrochemical results, we demonstrated that Ru nanoparticles show lower passivation potentials compared to bulk Ru material. Ir nanoparticles completely lost their voltammetric metallic features during the voltage cycling, in contrast to the corresponding bulk material. Finally, Pt nanoparticles show an increased oxophilic nature compared to bulk Pt. With regard to the OER performance, the most pronounced effects of nanosca...read more
Citations
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Hybrid Co@Ni12P5/PPy microspheres with dual synergies for high performance oxygen evolution
TL;DR: In this paper, a new class of conducting polymers based on metal-PPy analogs for alkaline OER has been proposed, Co@Ni12P5/PPy, which exhibits excellent charge transfer properties with earth abundant transition metals.
Journal ArticleDOI
Water Oxidation Catalysis via Size-Selected Iridium Clusters
Avik Halder,Cong Liu,Zhun Liu,Zhun Liu,Jonathan D. Emery,Michael J. Pellin,Larry A. Curtiss,Peter Zapol,Stefan Vajda,Stefan Vajda,Alex B. F. Martinson +10 more
TL;DR: The detailed mechanism and efficacy of four-electron electrochemical water oxidation depend critically upon the detailed atomic structure of each catalytic site, which are numerous and diverse in m.
Journal ArticleDOI
Electrocatalytic Oxygen Evolution Reaction in Acidic Conditions: Recent Progress and Perspectives
TL;DR: In this article, the electrochemical oxygen evolution reaction (OER) mechanism in acidic conditions is first discussed in detail, and the current key issues and future challenges for materials used as acidic OER catalysis are identified and potential future directions are proposed.
Journal ArticleDOI
Research progress on high entropy alloys and high entropy derivatives as OER catalysts
TL;DR: In this article , a review of the current research status and great potential of HEAs and high entropy derivatives as OER catalysts is presented. But due to the short time of their development, many HEAs fields have not been studied in sufficient depth.
Journal ArticleDOI
Enhancement of HER kinetics with RhNiFe for high-rate water electrolysis
Kannimuthu Karthick,Kannimuthu Karthick,Abdul Bashith Mansoor Basha,Abinaya Sivakumaran,Subrata Kundu,Subrata Kundu +5 more
TL;DR: In this article, a new idea of introducing Rh3+ ions into NiFe systems to form trimetallic RhNiFe carbonate hydroxide systems has shown overwhelming HER response, and hence, the overall voltage for alkaline water splitting is much reduced.
References
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Journal ArticleDOI
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