Journal ArticleDOI
Electrocatalytic Oxygen Evolution Reaction (OER) on Ru, Ir, and Pt Catalysts: A Comparative Study of Nanoparticles and Bulk Materials
Reads0
Chats0
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
Citations
More filters
Journal ArticleDOI
Cubic Nanostructures of Nickel–Cobalt Carbonate Hydroxide Hydrate as a High-Performance Oxygen Evolution Reaction Electrocatalyst in Alkaline and Near-Neutral Media
Kannimuthu Karthick,Kannimuthu Karthick,Sugumar Subhashini,Rishabh Kumar,Sridhar Sethuram Markandaraj,Muthukumar Muthu Teepikha,Subrata Kundu,Subrata Kundu +7 more
TL;DR: Comparison studies can be used in other 3d transition-metal-based catalysts for OER in the future to ensure the efficient direction of electrocatalytic water splitting with much less overpotential.
Journal ArticleDOI
CeO2 nanoparticles@ NiFe-LDH nanosheet heterostructure as electrocatalysts for oxygen evolution reaction
Dong Qibing,Dong Qibing,Chao Shuai,Chao Shuai,Zunli Mo,Zunli Mo,Liu Nijuan,Liu Nijuan,Guigui Liu,Guigui Liu,Jia Wang,Jia Wang,Hebing Pei,Hebing Pei,Jia Qianqian,Jia Qianqian,Wentong Liu,Wentong Liu,Guo Xudong,Guo Xudong +19 more
TL;DR: In this paper, the n-n heterostructure CeO2/NiFe-LDH electrocatalysts were synthesized through a simple hydrothermal reaction process, and the heterostructures and morphology of feature were characterized by X-ray diffraction, Xray photoelectron spectroscopy scanning electron microscope and transmission electron microscope.
Journal ArticleDOI
Graphene-reinforced metal-organic frameworks derived cobalt sulfide/carbon nanocomposites as efficient multifunctional electrocatalysts
TL;DR: In this paper, a simple method for the synthesis of graphene-reinforced CoS/C nanocomposites and the evaluation of their performance for typical electrocatalytic reactions was reported.
Journal ArticleDOI
Promoting oxygen evolution reaction by RuO2 nanoparticles in solid oxide CO2 electrolyzer
Yuefeng Song,Yuefeng Song,Xiaomin Zhang,Yingjie Zhou,Qike Jiang,Fang Guan,Fang Guan,Houfu Lv,Houfu Lv,Guoxiong Wang,Xinhe Bao +10 more
TL;DR: In this article, RuO2 nanoparticles possess excellent OER activity at 800 °C and can notably promote the OER performance of strontium doped lanthanum manganite/yttria-stabilized zirconia (LSM/YSZ) anode in solid oxide CO2 electrolyzer.
Journal ArticleDOI
One-step synthesis of IrOx-decorated ultrathin NiFe LDH nanosheets for efficient oxygen evolution reaction.
Depei Liu,Yu Du,Taozhu Li,Hehe Zhang,Duanduan Liu,Weining Zhang,Huang Tang,Yanghui Hou,Jingsha Li,Shicheng Yan,Tao Yu,Zhigang Zou +11 more
TL;DR: IrOx-decorated ultrathin NiFe-LDH nanosheets are synthesized by a one-step co-precipitation method, greatly increasing the active sites and the electric conductivity for NiFe -LDH and exhibiting excellent OER performance.
References
More filters
Book
Elements of X-ray diffraction
TL;DR: In this article, the authors present a chemical analysis of X-ray diffraction by Xray Spectrometry and phase-diagram Determination of single crystal structures and phase diagrams.
Journal ArticleDOI
Scherrer after sixty years: a survey and some new results in the determination of crystallite size
J. I. Langford,A. J. C. Wilson +1 more
TL;DR: In this article, the Scherrer constants of simple regular shapes have been determined for all low-angle reflections (h2 + k2 + l2 ≤ 100) for four measures of breadth.
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
TL;DR: In this article, a large database of HO* and HOO* adsorption energies on oxide surfaces was used to analyze the reaction free energy diagrams of all the oxides in a general way.
Journal ArticleDOI
Electrolysis of water on oxide surfaces
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 ).