The In Situ Growth Of Cu2o With A Honeycomb Structure On A Roughed Graphite Paper For The Efficient Electroreduction Of Co2 To C2h4

Metals and their alloy-based electrocatalysts continue to attract considerable attention for electrochemical carbon dioxide reduction reactions (CO(2)RRs). In this work, cuprous oxide (Cu2O) was supported on N-doped flexible roughed graphite paper (NGP) to fabricate Cu2O/NGP self-supporting electrocatalysts for CO(2)RRs by electrodeposition and heat treatment. In the Cu2O/NGP electrocatalyst, NGP acted as a current collector and conducting channel, which can effectively transfer electrons from the active sites of Cu2O to NGP, and thus, enhance the catalytic performance of Cu2O/NGP for CO(2)RRs. The overall Faradaic efficiency of Cu2O/NGP for CO(2)RRs reached 96% at -0.9 V vs. reversible hydrogen electrode, of which 35% originated from yielding ethylene (C2H4), suggesting its high activity and C2H4 selectivity. Furthermore, the excellent stability of Cu2O/NGP over 10 h made it preferable as an effective electrocatalyst for CO(2)RRs. The good electrocatalytic performance could be attributed to the unique self-supporting structure and the synergetic effect between Cu2O and NGP.