Interfacial Co–O–Cu bonds prompt electrochemical nitrate reduction to ammonia in neutral electrolyte.

In this work, the formed interfacial Co–O–Cu bonds in Co-doped Cu(OH)2 (Co2–Cu(OH)2) sufficiently expose active sites and improve the reaction kinetics. As a result, the optimal Co2–Cu(OH)2 provides an amazing faradaic efficiency (91.6%), high selectivity (93.2%) and robust stability toward the NO3RR. [ABSTRACT FROM AUTHOR]