Planar chlorination engineering induced symmetry-broken single-atom site catalyst for enhanced CO₂ electroreduction.

ABSTRACT: Breaking the geometric symmetry of traditional metal-N₄ sites and further boosting catalytic activity are significant but challenging. Herein, planar chlorination engineering is proposed for successfully converting the traditional Zn-N₄ site with low activity and selectivity for CO₂ reduction reaction (CO₂RR) into highly active Zn-N₃ site with broken symmetry. The optimal catalyst Zn-SA/CNCl-1000 displays a highest faradaic efficiency for CO (FE_CO) around 97 ± 3% and good stability during 50 h test at high current density of 200 mA/cm² in zero-gap membrane electrode assembly (MEA) electrolyzer, with promising application in industrial catalysis. At -0.93 V vs. RHE, the partial current density of CO (J_CO

SUBMITTER: Wei S 

PROVIDER: S-EPMC11829013 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature