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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Journal ArticleDOI
Electro-Oxidation of Ni42 Steel: A Highly Active Bifunctional Electrocatalyst
Helmut Schäfer,Daniel M. Chevrier,Peng Zhang,Johannes Stangl,Klaus Müller-Buschbaum,Jörg D. Hardege,Karsten Kuepper,Joachim Wollschläger,Ulrich Krupp,Simon Dühnen,Martin Steinhart,Lorenz Walder,Shamaila Sadaf,Mercedes Schmidt +13 more
TL;DR: In this paper, high-resolution XPS spectra show that most likely γ−NiO(OH) and FeO( OH) are catalytic active OER and NiO is the catalytic actives active HER species.
Journal ArticleDOI
Carbon Nanodot Surface Modifications Initiate Highly Efficient, Stable Catalysts for Both Oxygen Evolution and Reduction Reactions
Juan Liu,Shunyan Zhao,Chuanxi Li,Manman Yang,Yanmei Yang,Yang Liu,Yeshayahu Lifshitz,Shuit-Tong Lee,Zhenhui Kang +8 more
TL;DR: In this paper, it was demonstrated that carbon nanodots surface-modified with either phosphorus or amidogen can respectively achieve electrocatalytic activity approaching that of the benchmark Pt/C and IrO2/C catalysts for ORR and OER.
Journal ArticleDOI
The surface engineering of cobalt carbide spheres through N, B co-doping achieved by room-temperature in situ anchoring effects for active and durable multifunctional electrocatalysts
Xinzhi Ma,Kaiyue Li,Xiao Zhang,Bo Wei,Huan Yang,Lina Liu,Mingyi Zhang,Xitian Zhang,Yujin Chen +8 more
TL;DR: In this article, a new N, B co-doped Co3C multifunctional catalyst with enhanced ORR, OER and HER activities, as well as improved ORR and OER stabilities, in alkaline media has been synthesized.
Journal ArticleDOI
Ruthenium Nanoparticles for Catalytic Water Splitting.
Jordi Creus,Jordi Creus,Jordi Creus,Jonathan De Tovar,Nuria Romero,Jordi García-Antón,Karine Philippot,Karine Philippot,Roger Bofill,Xavier Sala +9 more
TL;DR: This review covers the most significant developments of ruthenium-based nanoparticles used as catalysts for the water-splitting process and the key factors that govern the catalytic performance of these nanocatalysts are discussed in view of future research directions.
Journal ArticleDOI
Zeolitic imidazolate framework-67 derived ultra-small CoP particles incorporated into N-doped carbon nanofiber as efficient bifunctional catalysts for oxygen reaction
TL;DR: In this article, ultra-small CoP nanoparticles incorporated into nitrogen-doped carbon nanofibers derived from zeolitic imidazolate framework-67 (ZIF-67) are found active as a bifunctional catalyst for oxygen electrocatalysis.
References
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Journal ArticleDOI
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Journal ArticleDOI
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