Spin‐State Modulation of Cobalt Centers for Boosting Electrochemical Ammonia Synthesis
Conventional low‐spin Co3O4 suffers from weak orbital hybridization with oxygenates (*NOx and *H2O), leading to slow reaction kinetics for ammonia synthesis during electrochemical nitrate reduction (NO3RR). Herein, we demonstrate the precise spin‐state engineering of octahedral Co3+ sites in spinel Co3O4 through a faci...