Tailoring Polymeric Binder of Permselective Gas Diffusion Electrode for Low-Concentration CO₂ Electrolysis.

ABSTRACT: Electrochemical CO₂ reduction (eCO₂R) offers a promising route to convert industrial CO₂ emissions into value-added chemicals. However, direct electrolysis of low-concentration CO₂ streams from flue gas suffers from mass transport limitation, resulting in poor Faradaic efficiency (FE). To address this challenge, a gas diffusion electrode featuring a permselective layer is developed that selectively concentrates CO₂ at the catalyst interface. The permselective layer integrates a hybrid CO₂-philic metal-organic framework Calgary Framework-20 (CALF-20) filler embedded within a tailored polymer matrix. Three polymers-Nafion, polysulfone (PSF), and styrene-ethylene-butylene-styrene-as the polymer matrix to optimize CO₂

SUBMITTER: Shiran HS 

PROVIDER: S-EPMC12703434 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature