期刊論文
| 學年 | 110 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2022-01-03 |
| 作品名稱 | 5f covalency synergistically boosting oxygen evolution of UCoO4 catalyst |
| 作品名稱（其他語言） | |
| 著者 | X. Lin; Y. C. Huang; Z. Hu; L. Li; J. Zhou; Q. Zhao; H. Huang; J. Sun; C. W. Pao; Y. C. Chang; H. J. Lin; C. T. Chen; C. L Dong; J. Q. Wang; L. Zhang |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Journal of the American Chemical Society 144(1), p.416-423 |
| 摘要 | Electronic structure modulation among multiple metal sites is key to the design of efficient catalysts. Most studies have focused on regulating 3d transition-metal active ions through other d-block metals, while few have utilized f-block metals. Herein, we report a new class of catalyst, namely, UCoO4 with alternative CoO6 and 5f-related UO6 octahedra, as a unique example of a 5f-covalent compound that exhibits enhanced electrocatalytic oxygen evolution reaction (OER) activity because of the presence of the U 5f–O 2p–Co 3d network. UCoO4 exhibits a low overpotential of 250 mV at 10 mA cm–2, surpassing other unitary cobalt-based catalysts ever reported. X-ray absorption spectroscopy revealed that the Co2+ ion in pristine UCoO4 was converted to high-valence Co3+/4+, while U6+ remained unchanged during the OER, indicating that only Co was the active site. Density functional theory calculations demonstrated that the OER activity of Co3+/4+ was synergistically enhanced by the covalent bonding of U6+-5f in the U 5f–O 2p–Co 3d network. This study opens new avenues for the realization of electronic structure manipulation via unique 5f involvement. |
| 關鍵字 | |
| 語言 | en_US |
| ISSN | 0002-7863;1520-5126 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 是 |
| 國別 | USA |
| 公開徵稿 | |
| 出版型式 | ,電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/124073 ) |