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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Preferentially Engineering FeN 4 Edge Sites onto Graphitic Nanosheets for Highly Active and Durable Oxygen Electrocatalysis in Rechargeable Zn–Air Batteries
Meiling Xiao,Meiling Xiao,Zihao Xing,Zihao Xing,Zhao Jin,Changpeng Liu,Junjie Ge,Jianbing Zhu,Jianbing Zhu,Ying Wang,Xiao Zhao,Xiao Zhao,Zhongwei Chen +12 more
TL;DR: A self-sacrificed templating approach is developed to obtain edge-enriched FeN4 sites integrated in the highly graphitic nanosheet architecture, which demonstrates unprecedented catalytic activity and stability for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER)
Journal ArticleDOI
Porphyrin-based frameworks for oxygen electrocatalysis and catalytic reduction of carbon dioxide
TL;DR: Porphyrin-based frameworks, as specific kinds of metal-organic frameworks (MOFs) and covalent organic frameworks (COFs), have been widely used in energy-related conversion processes, including the oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and also in energy related storage technologies such as rechargeable Zn-air batteries as discussed by the authors.
Journal ArticleDOI
In operando Raman investigation of Fe doping influence on catalytic NiO intermediates for enhanced overall water splitting
Zhen Qiu,Yue Ma,Tomas Edvinsson +2 more
TL;DR: In this article, the role of transition metal iron (Fe)-incorporated Ni oxide and oxyhydroxide compounds generally show an enhanced activity for alkaline water splitting, especially under hydrogen evolution reaction (HER).
Journal ArticleDOI
Recent developments of transition metal phosphides as catalysts in the energy conversion field
Yu Pei,Yu Cheng,Jiyi Chen,William R Smith,Pei Dong,Pei Dong,Pulickel M. Ajayan,Mingxin Ye,Jianfeng Shen +8 more
TL;DR: In this article, transition metal phosphides (TMPs) have received more and more attention in the energy conversion reaction process, and many kinds of TMPs are designed and synthesized by different methods.
Journal ArticleDOI
Facet-dependent activity and stability of Co₃O₄ nanocrystals towards the oxygen evolution reaction.
TL;DR: The dependence of OER activity and stability on spinel cobalt oxide crystal facets demonstrates the importance of surface orientation in catalyst performance optimization.
References
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Journal ArticleDOI
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Journal ArticleDOI
Universality in Oxygen Evolution Electrocatalysis on Oxide Surfaces
Isabela C. Man,Hai-Yan Su,Federico Calle-Vallejo,Heine Anton Hansen,José I. Martínez,Nilay İnoğlu,John R. Kitchin,Thomas F. Jaramillo,Jens K. Nørskov,Jan Rossmeisl +9 more
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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 ).