期刊論文
| 學年 | 107 |
|---|---|
| 學期 | 2 |
| 出版（發表）日期 | 2019-03-01 |
| 作品名稱 | Electrochemically active Ir NPs on graphene for OER in acidic aqueous electrolyte investigated by in situ and ex situ spectroscopies |
| 作品名稱（其他語言） | |
| 著者 | Velasco-Vélez, J. J.; Jones, T. E.; Streibel, V.; Hävecker, M.; Chuang, C.-H.; Frevel, L.; Plodinec, M.; Centeno, A.; Zurutuza, A.; Wang, R.; Arrigo, R.; Mom, R.; Hofmann, S.; Schlögl, R.; Knop-Gericke, A. |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Surface Science 681, p.1-8 |
| 摘要 | An electrode for the oxygen evolution reaction based on a conductive bi-layered free standing graphene support functionalized with iridium nanoparticles was fabricated and characterized by means of potentiometric and advanced X-ray spectroscopic techniques. It was found that the electrocatalytic activity of iridium nanoparticles is associated to the formation of Ir 5d electron holes. Strong Ir 5d and O 2p hybridization, however, leads to a concomitant increase O 2p hole character, making oxygen electron deficient and susceptible to nucleophilic attack by water. Consequently, more efficient electrocatalysts can be synthesized by increasing the number of electron-holes shared between the metal d and oxygen 2p. |
| 關鍵字 | Photoelectron spectroscopy;OER;Ir nanoparticles;Graphene membrane;Aqueous electrolyte |
| 語言 | en |
| ISSN | 0039-6028 |
| 期刊性質 | 國外 |
| 收錄於 | SCI Scopus |
| 產學合作 | |
| 通訊作者 | velasco@fhi-berlin.mpg.der |
| 審稿制度 | 是 |
| 國別 | NLD |
| 公開徵稿 | |
| 出版型式 | ,電子版,紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/116558 ) |