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Single-Atomic Ruthenium Catalytic Sites on Nitrogen-Doped Graphene for Oxygen Reduction Reaction in Acidic Medium
文献类型：期刊论文
| 作者 | Zhang, CH; Sha, JW; Fei, HL; Liu, MJ; Yazdi, S; Zhang, JB; Zhong, QF; Zou, XL; Zhao, NQ; Yu, HS |
| 刊名 | ACS NANO
 |
| 出版日期 | 2017 |
| 卷号 | 11期号:7页码:6930-6941 |
| 关键词 | X-ray-absorption Total-energy Calculations Membrane Fuel-cells Wave Basis-set Carbon Electrocatalysts Oxidation Iron Oxide Performance Cobalt |
| ISSN号 | 1936-0851 |
| DOI | 10.1021/acsnano.7b02148 |
| 文献子类 | 期刊论文 |
| 英文摘要 | The cathodic oxygen reduction reaction (ORR) is essential in the electrochemical energy conversion of fuel cells. Here, through the NH3 atmosphere annealing of a graphene oxide (GO) precursor containing trace amounts of Ru, we have synthesized atomically dispersed Ru on nitrogen-doped graphene that performs as an electrocatalyst for the ORR in acidic medium. The Ru/nitrogendoped GO catalyst exhibits excellent four-electron ORR activity, offering onset and half-wave potentials of 0.89 and 0.75 V, respectively, vs a reversible hydrogen electrode (RHE) in 0.1 M HClO4, together with better durability and tolerance toward methanol and carbon monoxide poisoning than seen in commercial Pt/C catalysts. X-ray adsorption fine structure analysis and aberration-corrected high-angle annular dark-field scanning transmission electron microscopy are performed and indicate that the chemical structure of Ru is predominantly composed of isolated Ru atoms coordinated with nitrogen atoms on the graphene substrate. Furthermore, a density function theory study of the ORR mechanism suggests that a Ru-oxo-N-4 structure appears to be responsible for the ORR catalytic activity in the acidic medium. These findings provide a route for the design of efficient ORR single-atom catalysts. |
| WOS关键词 | X-RAY-ABSORPTION ; TOTAL-ENERGY CALCULATIONS ; MEMBRANE FUEL-CELLS ; WAVE BASIS-SET ; CARBON ELECTROCATALYSTS ; OXIDATION ; IRON ; OXIDE ; PERFORMANCE ; COBALT |
| 语种 | 英语 |
| WOS记录号 | WOS:000406649700041 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/28819]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Zhang, CH,Sha, JW,Fei, HL,et al. Single-Atomic Ruthenium Catalytic Sites on Nitrogen-Doped Graphene for Oxygen Reduction Reaction in Acidic Medium[J]. ACS NANO,2017,11(7):6930-6941. |
| APA | Zhang, CH.,Sha, JW.,Fei, HL.,Liu, MJ.,Yazdi, S.,...&Tour, JM.(2017).Single-Atomic Ruthenium Catalytic Sites on Nitrogen-Doped Graphene for Oxygen Reduction Reaction in Acidic Medium.ACS NANO,11(7),6930-6941. |
| MLA | Zhang, CH,et al."Single-Atomic Ruthenium Catalytic Sites on Nitrogen-Doped Graphene for Oxygen Reduction Reaction in Acidic Medium".ACS NANO 11.7(2017):6930-6941. |
入库方式： OAI收割
来源：上海应用物理研究所
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