Enriching Surface-Accessible CO₂ in the Zero-Gap Anion-Exchange-Membrane-Based CO₂ Electrolyzer.

ABSTRACT: Zero-gap anion exchange membrane (AEM)-based CO₂ electrolysis is a promising technology for CO production, however, their performance at elevated current densities still suffers from the low local CO₂ concentration due to heavy CO₂ neutralization. Herein, via modulating the CO₂ feed mode and quantitative analyzing CO₂ utilization with the aid of mass transport modeling, we develop a descriptor denoted as the surface-accessible CO₂ concentration ([CO₂ ]^SA ), which enables us to indicate the transient state of the local [CO₂ ]/[OH^- ] ratio and helps define the limits of CO₂ -to-CO conversion. To enrich the [CO₂ ]^SA , we developed three general strateg

SUBMITTER: Xu Q 

PROVIDER: S-EPMC10108229 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature