教師資料查詢 | 類別: 期刊論文 | 教師: 莊程豪 CHENG-HAO CHUANG (瀏覽個人網頁)

標題:Electrochemically active Ir NPs on graphene for OER in acidic aqueous electrolyte investigated by in situ and ex situ spectroscopies
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
語言英文
ISSN
期刊性質國外
收錄於SCI;
產學合作
通訊作者velasco@fhi-berlin.mpg.der
審稿制度
國別荷蘭
公開徵稿
出版型式,電子版
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