Engineering Dual Single‐Atom Sites on 2D Ultrathin N‐doped Carbon Nanosheets Attaining Ultra‐Low‐Temperature Zinc‐Air Battery

Abstract Herein, a novel dual single‐atom catalyst comprising adjacent Fe‐N 4 and Mn‐N 4 sites on 2D ultrathin N‐doped carbon nanosheets with porous structure (FeMn‐DSAC) was constructed as the cathode for a flexible low‐temperature Zn‐air battery (ZAB). FeMn‐DSAC exhibits remarkable bifunctional activities for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Control experiments and density functional theory calculations reveal that the catalytic activity arises from the cooperative effect of the Fe/Mn dual‐sites aiding *OOH dissociation as well as the porous 2D nanosheet structure promoting active sits exposure and mass transfer during the reaction process. The excellent bifunctional…

• NN
  National Natural Science Foundation of China

  Award: 22171157