FeCoN 6 Sites Unlock Superior Sodium‐Ion Storage Through Synergizing Capture‐Release and Orbital‐Mediated Charge Delocalization

, and achieves 90% capacity retention over 10,000 cycles. This study establishes that engineering heteroatomic sites to leverage both intrinsic functional heterogeneity and electronic delocalization is a powerful strategy to overcome kinetic limitations in energy storage.