Electrodeposited polyoxometalate–Cu 2+1 O hybrid on copper foam: synergistic electron transfer for efficient nitrate electroreduction to ammonia

A hybrid electrocatalyst (Mo 7 /Cu 2+1 O/Cu@CF) was fabricated by integrating polyoxometalate [Mo 7 O 24 ] 6− with Cu 2+1 O on copper foam via electrochemical deposition. Strong interfacial electronic coupling facilitates electron transfer.