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:Photoelectron Spectroscopy at the Graphene–Liquid Interface Reveals the Electronic Structure of an Electrodeposited Cobalt/Graphene Electrocatalyst
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
語言英文
ISSN1433-7851
期刊性質國外
收錄於SCI;
產學合作
通訊作者
審稿制度
國別德國
公開徵稿
出版型式,電子版
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