期刊論文
| 學年 | 104 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2015-10-23 |
| 作品名稱 | Photoelectron Spectroscopy at the Graphene–Liquid Interface Reveals the Electronic Structure of an Electrodeposited Cobalt/Graphene Electrocatalyst |
| 作品名稱（其他語言） | |
| 著者 | Juan J. Velasco-Velez; Verena Pfeifer; Michael Hvecker; Robert S. Weatherup; Rosa Arrigo; Cheng-Hao Chuang; Eugen Stotz; Gisela Weinberg; Miquel Salmeron; Robert Schlogl; and Axel Knop-Gericke |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Angewandte Chemie International Edition 54(48), p.14554-14558 |
| 摘要 | Electrochemically grown cobalt on graphene exhibits exceptional performance as a catalyst for the oxygen evolution reaction (OER) and provides the possibility of controlling the morphology and the chemical properties during deposition. However, the detailed atomic structure of this hybrid material is not well understood. To elucidate the Co/graphene electronic structure, we have developed a flow cell closed by a graphene membrane that provides electronic and chemical information on the active surfaces under atmospheric pressure and in the presence of liquids by means of X-ray photoelectron spectroscopy (XPS). We found that cobalt is anchored on graphene via carbonyl-like species, namely Co(CO)x, promoting the reduction of Co3+ to Co2+, which is believed to be the active site of the catalyst. |
| 關鍵字 | electrodeposition;electrocatalysis;graphene/cobalt;photoelectron spectroscopy;X‐ray absorption spectroscopy |
| 語言 | en |
| ISSN | 1433-7851 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 否 |
| 國別 | DEU |
| 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/987654321/109846 ) |