A Br- anion adsorbed porous Ag nanowire film: in situ electrochemical preparation and application toward efficient CO2 electroreduction to CO with high selectivity

作者：Qiu, Weibin; Liang, Ruping; Luo, Yonglan; Cui, Guangwei; Qiu, Jianding^*; Sun, Xuping^*

来源：Inorganic Chemistry Frontiers, 2018, 5(9): 2238-2241.

DOI：10.1039/c8qi00500a

• CARBON-DIOXIDE CONVERSION
• ELECTROCATALYTIC REDUCTION
• SILVER
• CHALLENGES
• ELECTRODES
• EVOLUTION
• INSIGHTS
• MONOXIDE

Developing selective and cost-effective CO2 reduction electrocatalysts is critical for electrochemical production of carbon-containing fuels. In this communication, we report on the in situ fabrication of a bromide-derived porous Ag nanowire film (BD-Ag) with adsorbed Br- anions via anodic oxidation of commerical Ag foil and subsequent electrochemical reduction. The resulting BD-Ag behaves as an efficient electrocatalyst for CO2 reduction to CO with high selectivity, with a low onset overpotential of only 296 mV and a high CO faradaic efficiency of 96.2% in 0.5 M KHCO3. Furthermore, it also shows excellent long-term electrochemical durability. This work offers an attractive catalyst material toward efficient and selective CO2 reduction for electrocatalytic applications.

• 出版日期2018-9-1
• 单位南昌大学; 山东师范大学; 电子科技大学