Knowledge Management System Of Institute of High Energy
| Unique Coordination Structure of Cobalt Single-Atom Catalyst Supported on Dopant-Free Carbon | |
| BSRF用户 | |
| 2021 | |
| Source Publication | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| ISSN | 1932-7447 |
| EISSN | 1932-7455 |
| Volume | 125Issue:12Pages:6735--6742 |
| Subtype | Article |
| Abstract | Metal single-atom catalysts (SACs) supported on doped-carbon materials have attracted extensive attention for the electrocatalytic oxygen reduction reaction (ORR); however, dopant-free carbon supported metal SACs are rather scarcely studied because they are expected to aggregate under harsh catalytic conditions. In this work, we report the successful synthesis of porous carbon-anchored cobalt SACs. The atomic dispersion of the as-synthesized catalyst is confirmed by high-angle annular dark-field scanning transmission electron microscopy and X-ray absorption fine structure spectra. This atomically dispersed catalyst is identified to be in a Co-C-4 structure with weakly adsorbed O-2 molecules under ambient conditions. It exhibits remarkable reaction activity and superb stability toward the ORR reaction, with the Co-C-4 units being the active sites. Theoretical calculations unravel that the stability of the Co-C-4 unit is reinforced by the d-p hybridization between Co and coordinated C atoms that allows for substantial charge transfer from Co to C. This work may offer new insights into rational design and synthesis of carbon-based metal SACs for electrochemical applications. |
| DOI | 10.1021/acs.jpcc.1c01910 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| WOS Subject | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000636924700023 |
| ItemNo | BSRF00825 |
| beamline | 1W1B |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ihep.ac.cn/handle/311005/293593 |
| Collection | 北京同步辐射装置 |
| Recommended Citation GB/T 7714 | BSRF用户. Unique Coordination Structure of Cobalt Single-Atom Catalyst Supported on Dopant-Free Carbon[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2021,125(12):6735--6742. |
| APA | BSRF用户.(2021).Unique Coordination Structure of Cobalt Single-Atom Catalyst Supported on Dopant-Free Carbon.JOURNAL OF PHYSICAL CHEMISTRY C,125(12),6735--6742. |
| MLA | BSRF用户."Unique Coordination Structure of Cobalt Single-Atom Catalyst Supported on Dopant-Free Carbon".JOURNAL OF PHYSICAL CHEMISTRY C 125.12(2021):6735--6742. |
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