Electrochemical reduction of carbon dioxide at various series of copper single crystal electrodes

Electrochemical reduction of carbon dioxide was studied with various series of copper single crystal electrodes in 0.1 M KHCO3 aqueous solution at constant current density 5 mA cm−2; the electrodes employed are Cu(S)-[n(100)×(111)], Cu(S)-[n(100)×(110)], Cu(S)-[n(111)×(100)], Cu(S)-[n(111)×(111)] and Cu(S)-[n(110)×(100)]. The electrodes based on (1 0 0) terrace surface give ethylene as the major product. The ethylene formation is further...