Effect of Ionomer on CO₂ Reduction at Atomically Dispersed Ni─N─C Catalyst.

ABSTRACT: Ionomers play an important role in carbon dioxide (CO₂) electrolyzers by affecting CO₂ reduction reaction (CO₂RR) at the cathode. In this study, we systematically examines the impact that different ionomers have on CO₂RR at atomically dispersed nickel-nitrogen-carbon (Ni─N─C) catalyst. We compare the effects of two acidic cation exchange ionomers, perfluorosulfonic acid (Nafion) and sulfonated poly(aryl ether sulfone), and two alkaline anion exchange ionomers: quaternary ammonium-functionalized poly(aryl piperidinium) and quaternary ammonium-functionalized polyfluorene. Of the four ionomers, the Nafion-bonded electrode reaches the highest CO₂RR activity and selectivity in H-cell testing likely due to the polymer weak interaction with t

SUBMITTER: Ko Y 

PROVIDER: S-EPMC12696775 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature