Climate Change Data Portal
| DOI | 10.1039/c7ee02307c |
| Towards identifying the active sites on RuO2(110) in catalyzing oxygen evolution | |
| Rao R.R.; Kolb M.J.; Halck N.B.; Pedersen A.F.; Mehta A.; You H.; Stoerzinger K.A.; Feng Z.; Hansen H.A.; Zhou H.; Giordano L.; Rossmeisl J.; Vegge T.; Chorkendorff I.; Stephens I.E.L.; Shao-Horn Y. | |
| 发表日期 | 2017 |
| ISSN | 17545692 |
| 起始页码 | 2626 |
| 结束页码 | 2637 |
| 卷号 | 10期号:12 |
| 英文摘要 | While the surface atomic structure of RuO2 has been well studied in ultra high vacuum, much less is known about the interaction between water and RuO2 in aqueous solution. In this work, in situ surface X-ray scattering measurements combined with density functional theory (DFT) were used to determine the surface structural changes on single-crystal RuO2(110) as a function of potential in acidic electrolyte. The redox peaks at 0.7, 1.1 and 1.4 V vs. reversible hydrogen electrode (RHE) could be attributed to surface transitions associated with the successive deprotonation of -H2O on the coordinatively unsaturated Ru sites (CUS) and hydrogen adsorbed to the bridging oxygen sites. At potentials relevant to the oxygen evolution reaction (OER), an -OO species on the Ru CUS sites was detected, which was stabilized by a neighboring -OH group on the Ru CUS or bridge site. Combining potential-dependent surface structures with their energetics from DFT led to a new OER pathway, where the deprotonation of the -OH group used to stabilize -OO was found to be rate-limiting. © The Royal Society of Chemistry. |
| 英文关键词 | Density functional theory; Electrolytes; Oxygen; Single crystals; Solutions; X ray scattering; Acidic electrolytes; Co-ordinatively unsaturated; Oxygen evolution reaction; Potential-dependent; Reversible hydrogen electrodes; Surface atomic structure; Surface structural changes; Surface X-ray scattering; Crystal atomic structure; aqueous solution; catalysis; catalyst; chemical reaction; electrode; electrolyte; energetics; hydrogen; inorganic compound; measurement method; oxygen; X-ray |
| 语种 | 英语 |
| 来源期刊 | Energy & Environmental Science
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/190361 |
| 作者单位 | Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Department of Energy Conversion and Storage, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark; Section for Surface Physics and Catalysis, Department of Physics, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark; SLAC National Accelerator Laboratory, Menlo Park, CA 94025, United States; Argonne National Laboratory, Materials Science Division, Argonne, IL 6043, United States; Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR 97331, United States; X-ray Science Division, Argonne National Laboratory, Argonne, IL 60439, United States; Dipartimento di Scienza Dei Materiali, Università di Mil... |
| 推荐引用方式 GB/T 7714 | Rao R.R.,Kolb M.J.,Halck N.B.,et al. Towards identifying the active sites on RuO2(110) in catalyzing oxygen evolution[J],2017,10(12). |
| APA | Rao R.R..,Kolb M.J..,Halck N.B..,Pedersen A.F..,Mehta A..,...&Shao-Horn Y..(2017).Towards identifying the active sites on RuO2(110) in catalyzing oxygen evolution.Energy & Environmental Science,10(12). |
| MLA | Rao R.R.,et al."Towards identifying the active sites on RuO2(110) in catalyzing oxygen evolution".Energy & Environmental Science 10.12(2017). |
| 条目包含的文件 | 条目无相关文件。 | |||||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
