Dual modulation of coordination asymmetry and curvature unlocks record-level Zn–air battery performance with Fe–N–C single-atom catalysts

Dual modulation strategy of coordination asymmetry and curvature optimizes the atomic Fe sites, unlocking record-level quasi-solid-state Zn–air battery performance with a capacity of 1.56 Ah and cycling over 2000 h at −40 °C.