Coordinately Unsaturated Single−Fe−Atom with N-Vacancy and Enhanced sp3 Carbon Defects in Fe−N(sp2)−C structural unit for Suppression of Cancer Cells Metabolism and Electrochemical Oxygen Evolution

Significantly stronger ROS and OER activities of FeSA950NC suggest the significant roles of V N and sp 3 -carbon defects with coordinately unsaturated Fe–N 2 sites in improving its catalytic performance.