Axial O‐Bridge Bond Induced Electron High‐Spin and Destroyed d–π Conjugation of Fe Single‐Atom Sites for Enhanced CO ₂ Electroreduction (Adv. Funct. Mater. 25/2026)

Single-Atoms Catalysts This cover illustrates the construction of axial O-bridge bond coordinated Fe single-atoms in the nitrogen-doped carbon-skeleton catalyst (O─Fe─N4 SACs) derived from ZIF-8. The axial O-bridge bond breaks the D4h symmetry of the Fe─N4 active center, resulting in the rearrangement of the spinning electron in the Fe 3d orbital to disrupt surface d–π conjugation. Therefore, electrocatalytic CO2 reduction (CO2RR) reaction activity is greatly improved. More information can be found in the Research Article by Yixuan Gao, Fan Li, Wen Liu, and co-workers (10.1002/adfm.202529252).