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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TLDR
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
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Flower-like nickel-cobalt oxide nanomaterials as bi-functional catalyst for electrochemical water splitting
TL;DR: In this article, a highly efficient and stable bi-functional electrode based on a flower-like hierarchical nanoporous nickel-cobalt oxide (NP-NiCo2O4) material for electrochemical water splitting reactions was demonstrated.
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Recent advances of transition metal based bifunctional electrocatalysts for rechargeable zinc-air batteries
Licheng Wei,Edison Huixiang Ang,Yang Yang,Yanlin Qin,Yufei Zhang,Minghui Ye,Qi Liu,Cheng Chao Li +7 more
TL;DR: In this article, transition metal-based materials have been explored as potential bifunctional electrocatalysts for ZABs with the advantages of highly activity, cost-effective and excellent stability.
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Recent advances in one-dimensional nanostructures for energy electrocatalysis
TL;DR: In this paper, a review highlights the application of one-dimensional (1D) metal electrocatalysts in energy conversion, focusing on two important reaction systems (direct methanol fuel cells and water splitting).
Journal ArticleDOI
RhCu 3D Nanoframe as a Highly Active Electrocatalyst for Oxygen Evolution Reaction under Alkaline Condition
Jongsik Park,Jongchan Kim,Yoojin Yang,Donghwan Yoon,Hionsuck Baik,Seungjoo Haam,Haesik Yang,Kwangyeol Lee +7 more
TL;DR: One pot synthesis of RhCu alloy truncated octahedral nanoframes, Cu@Rh core–shell nanoparticles, and a bundle of five RhCu nanowires is demonstrated.
Journal ArticleDOI
Tailoring ruthenium exposure to enhance the performance of fcc platinum@ruthenium core–shell electrocatalysts in the oxygen evolution reaction
Noktan M. Alyami,Alec P. LaGrow,Alec P. LaGrow,Khurram Saleem Joya,Khurram Saleem Joya,Jinyeon Hwang,Khabiboulakh Katsiev,Dalaver H. Anjum,Yaroslav Losovyj,Lutfan Sinatra,Jin Young Kim,Osman M. Bakr +11 more
TL;DR: Pt@Ru nanocrystals with a ∼2-3 atomic layer Ru cuboctahedral shell surpass conventional Ru nanoparticles in terms of both durability and activity, and exhibit noticeably higher electrocatalytic activity in the OER compared to that of pure Pt andRu nanoparticles.
References
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Journal ArticleDOI
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Universality in Oxygen Evolution Electrocatalysis on Oxide Surfaces
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Journal ArticleDOI
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TL;DR: In this paper, density functional theory (DFT) calculations are performed to analyze the electrochemical water-splitting process producing molecular oxygen (O 2 ) and hydrogen (H 2 ).