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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Development of Copper Cobalt Sulfide with Cu : Co Ratio Variation on Carbon Cloth as an Efficient Electrode Material for the Oxygen Evolution Reaction
Journal ArticleDOI
Rational design of hybrid Fe7S8/Fe2N nanoparticles as effective and durable bifunctional electrocatalysts for rechargeable zinc-air batteries
Shilei Xie,Jiajin Lin,Shoushan Wang,Dong Xie,Peng Liu,Guiping Tan,Min Zhang,Ruan Dongliang,Chao Zhen,Faliang Cheng +9 more
TL;DR: In this article, a bifunctional Fe7S8/Fe2N nanoparticle (Fe7S 8/Fe 2N NPs) was proposed for the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) by carbonizing the metal-organic framework precursors.
Journal ArticleDOI
Application of atomic layer deposition in fabricating high-efficiency electrocatalysts
Huimin Yang,Yao Chen,Yong Qin +2 more
TL;DR: In this article, the mechanism, characteristics, and advantages of ALD in fabricating nanostructures are introduced, and a series of recently developed ALD strategies to enhance the activity and durability of electrocatalysts are presented.
Journal ArticleDOI
Ultralow non-noble metal loaded MOF derived bi-functional electrocatalysts for the oxygen evolution and reduction reactions
Debabrata Bagchi,Nithi Phukan,Shreya Sarkar,Risov Das,Bitan Ray,Pavithra Bellare,N. Ravishankar,Sebastian C. Peter +7 more
TL;DR: In this article, two isophthalate-based ligands were employed to tune the molecular structure and chemical bonding of three Co-based MOFs at the atomic level, and the catalytic activity of these MOFs was boosted further upon annealing thereby forming highly efficient noble-metal-free Co-single atom catalysts where the amount of cobalt is extremely low.
Journal ArticleDOI
Surface Co3+-rich engineering of Co(SxSe1–x)2 nanocrystals coated with ultrathin carbon layer for efficient OER/HER
TL;DR: In this article, a series of Co(SxSe1−x)2@C core-shell nanoparticles with tunable compositions were successfully synthesized via a facile two-step approach including pre-oxidation followed by the sulfurization/selenylation process.
References
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Journal ArticleDOI
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