Revealing the Active Phase of Copper during the Electroreduction of CO2 in Aqueous Electrolyte by Correlating In Situ X-ray Spectroscopy and In Situ Electron Microscopy
學年 108
學期 2
出版（發表）日期 2020-06-12
作品名稱 Revealing the Active Phase of Copper during the Electroreduction of CO2 in Aqueous Electrolyte by Correlating In Situ X-ray Spectroscopy and In Situ Electron Microscopy
作品名稱（其他語言）
著者 Juan-Jesus Velasco-Velez; Rik V. Mom; Luis-Ernesto Sandoval-Diaz; Lorenz J. Falling; Cheng-Hao Chuang; Dunfeng Gao; Travis E. Jones; Qingjun Zhu; Rosa Arrigo; Beatriz Roldan Cuenya; Axel Knop-Gericke; Thomas Lunkenbein; Robert Schlögl
單位
出版者
著錄名稱、卷期、頁數 ACS Energy Letters 5(6), p.2106–2111
摘要 The variation in the morphology and electronic structure of copper during the electroreduction of CO2 into valuable hydrocarbons and alcohols was revealed by combining in situ surface- and bulk-sensitive X-ray spectroscopies with electrochemical scanning electron microscopy. These experiments proved that the electrified interface surface and near-surface are dominated by reduced copper. The selectivity to the formation of the key C–C bond is enhanced at higher cathodic potentials as a consequence of increased copper metallicity. In addition, the reduction of the copper oxide electrode and oxygen loss in the lattice reconstructs the electrode to yield a rougher surface with more uncoordinated sites, which controls the dissociation barrier of water and CO2. Thus, according to these results, copper oxide species can only be stabilized kinetically under CO2 reduction reaction conditions.
關鍵字
語言 en
ISSN 2380-8195
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 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/987654321/119026 )