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
Fundamental Studies of Planar Single-Crystalline Oxide Model Electrodes (RuO2, IrO2) for Acidic Water Splitting
Journal ArticleDOI
Formation of hierarchical Ni3S2 nanohorn arrays driven by in-situ generation of VS4 nanocrystals for boosting alkaline water splitting
Yang Dan,Liyun Cao,Feng Liangliang,Feng Liangliang,Jianfeng Huang,Koji Kajiyoshi,Yongqiang Feng,Qianqian Liu,Wenbin Li,Feng Li,Guojuan Hai +10 more
TL;DR: In this paper, a hierarchical Ni3S2/VS4 nanohorn array grown on nickel foam (NS-horn/NF) is prepared by a self-driven synthesis strategy.
Journal ArticleDOI
Double Metal Diphosphide Pair Nanocages Coupled with P-Doped Carbon for Accelerated Oxygen and Hydrogen Evolution Kinetics.
TL;DR: A unique bimetallic diphosphide pair forming spherical nanocages encapsulated in P-doped carbon layers as advanced bifunctional electrocatalyst synthesized by a very facile phosphorization approach provides a novel prospect to shed light on the intrinsic OER electrocatalytic behavior of Fe/Ni-based phosphide Electrocatalysts.
Journal ArticleDOI
Self-Supported Hydrous Iridium–Nickel Oxide Two-Dimensional Nanoframes for High Activity Oxygen Evolution Electrocatalysts
Fernando Godinez-Salomon,Luis Albiter,Shaun M. Alia,Bryan S. Pivovar,Luis E. Camacho-Forero,Perla B. Balbuena,Rubén Mendoza-Cruz,M. Josefina Arellano-Jiménez,Christopher P. Rhodes +8 more
TL;DR: In this article, a carbon-free, self-supported hydrous iridium-nickel oxide two-dimensional nanoframe structure was synthesized by thermal treatment of iridiumdecorated nickel oxide nanosheets under reducing conditions and subsequent chemical leaching in acid.
Journal ArticleDOI
N,P-coordinated fullerene-like carbon nanostructures with dual active centers toward highly-efficient multi-functional electrocatalysis for CO2RR, ORR and Zn-air battery
Xiaoyi Xue,Hui Yang,Tao Yang,Tao Yang,Pengfei Yuan,Qing Li,Shichun Mu,Xiaoli Zheng,Lifeng Chi,Jia Zhu,Yanguang Li,Jianan Zhang,Qun Xu +12 more
TL;DR: In this paper, a P and N-coordinated fullerene-like carbon (N,P-FC) multi-functional catalyst was constructed via a facile soft-template pyrolysis method, which achieves impressive activity for the electrochemical reduction of CO2 to CO (CO2RR, 83.3% faradaic efficiency for CO (FECO), along with high selectivity and long-term stability.
References
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Journal ArticleDOI
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