Defect‐Induced Selectivity Modulation Using Copper Triazole Molecular Frameworks for Electrochemical CO ₂ Reduction

Abstract Metal–organic frameworks (MOFs) are considered promising electrocatalytic materials due to their adjustable coordination bonds between metal ions and organic ligands. The abundance of metal centers within MOFs offers potential active sites. However, the limited availability of adsorption sites in the case of fully coordinated metal ions might lead to insufficient electrocatalytic activity. The selectivity is tuned during the electrochemical CO ₂ reduction reaction (eCO ₂ RR) using Cu‐1H‐1,2,3‐triazole MOF from C ₁ products to C ₂₊ products by generating defects to enable a local increase in CO ^* coverage, thus improving eCO ₂ RR performance. The catalyst exhibits ≈78.4% of total Faradaic efficiency for C ₂₊ products at −200 mA cm ⁻² current density in 1.0 m KOH as electrolyte.