Anzai Akihiko, Higashi Manabu, Yamauchi Miho
Institute for Materials Chemistry and Engineering (IMCE), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
Chem Commun (Camb). 2023 Sep 19;59(75):11188-11191. doi: 10.1039/d3cc03298a.
Electrochemical CO reduction (eCOR) by direct introduction of 60% air-containing CO mixed gas was demonstrated using a porous Cu network cathode formed on a hydrophobic gas diffusion layer (Cu/P-GDL). Cu/P-GDL exhibited eCOR using the mixed gas with a remarkable faradaic efficiency of 85% for the production of C chemicals, whereas a Cu cathode constructed on a conventional carbon gas diffusion layer (Cu/C-GDL) produced neither eCOR products nor H. Furthermore, the electrolyzer with Cu/P-GDL and optimized anode configuration achieved a partial current density of 132 mA cm for C chemicals even in the presence of 12% O. Demonstration of eCOR with impure CO gas would greatly expand its future applications.
通过在疏水性气体扩散层（Cu/P-GDL）上形成的多孔铜网络阴极，实现了直接引入含60%空气的一氧化碳混合气体进行电化学一氧化碳还原（eCOR）。Cu/P-GDL使用该混合气体表现出eCOR，生成C化学品的法拉第效率高达85%，而在传统碳气体扩散层（Cu/C-GDL）上构建的铜阴极既不产生eCOR产物也不产生氢气。此外，具有Cu/P-GDL和优化阳极配置的电解槽即使在存在12%氧气的情况下，对于C化学品也能实现132 mA cm的分电流密度。用不纯的一氧化碳气体进行eCOR的演示将极大地扩展其未来应用。
