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
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Journal ArticleDOI
Mn-Doped RuO2 Nanocrystals as Highly Active Electrocatalysts for Enhanced Oxygen Evolution in Acidic Media
Shi Chen,Hao Huang,Peng Jiang,Kang Yang,Jiefeng Diao,Shipeng Gong,Shuai Liu,Minxue Huang,Hui Wang,Qianwang Chen,Qianwang Chen +10 more
TL;DR: In this article, RuO2 is a benchmark acidic oxygen evolution reaction (OER) catalyst, but its wide applications are always restricted by slow dynamics and limited durability, and it is not suitable for many applications.
Journal ArticleDOI
Covalency competition dominates the water oxidation structure–activity relationship on spinel oxides
Yuanmiao Sun,Hanbin Liao,Jiarui Wang,Bo Chen,Shengnan Sun,Shengnan Sun,Samuel Jun Hoong Ong,Shibo Xi,Caozheng Diao,Yonghua Du,Yonghua Du,Jiaou Wang,Mark B. H. Breese,Shuzhou Li,Hua Zhang,Zhichuan J. Xu +15 more
TL;DR: In this paper, the authors demonstrate that the OER activity on spinel oxides is intrinsically dominated by the covalency competition between tetrahedral and octahedral sites, and the design principle is used to predict and confirm the superior activity of [Mn]T[Al 0.5Mn 1.5]OO4.
Journal ArticleDOI
Balancing activity, stability and conductivity of nanoporous core-shell iridium/iridium oxide oxygen evolution catalysts.
Yong-Tae Kim,Pietro P. Lopes,Shin-Ae Park,A-Yeong Lee,Jinkyu Lim,Hyunjoo Lee,Seoin Back,Yousung Jung,Nemanja Danilovic,Vojislav R. Stamenkovic,Jonah Erlebacher,Joshua Snyder,Nenad M. Markovic +12 more
TL;DR: Tuning the nanoporous morphology of iridium/iridium oxide leads to an improvement in activity/stability, compared with conventional iridium-based oxides, as quantified by the activity-stability factor.
Journal ArticleDOI
Anion-Containing Noble-Metal-Free Bifunctional Electrocatalysts for Overall Water Splitting
TL;DR: In this paper, a non-noble-metal bifunctional electrocatalysts (NHOBEs) have been developed for both hydrogen evolution reaction (HER) and oxygen (O2) evolution reaction.
Journal ArticleDOI
Recent Advances on Black Phosphorus for Energy Storage, Catalysis, and Sensor Applications.
TL;DR: The mechanism and application of BP in Li-/Na-ion battery anodes, oxygen evolution reaction/hydrogen evolution reaction catalysis, photocatalytic hydrogen production, and selective sensors are summarized.
References
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Journal ArticleDOI
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Journal ArticleDOI
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