Anion-exchange membranes with internal microchannels for water control in CO₂ electrolysis.

ABSTRACT: Electrochemical reduction of carbon dioxide (CO₂R) poses substantial promise to convert abundant feedstocks (water and CO₂) to value-added chemicals and fuels using solely renewable energy. However, recent membrane-electrode assembly (MEA) devices that have been demonstrated to achieve high rates of CO₂R are limited by water management within the cell, due to both consumption of water by the CO₂R reaction and electro-osmotic fluxes that transport water from the cathode to the anode. Additionally, crossover of potassium (K⁺) ions poses concern at high current densities where saturation and precipitation of the salt ions can degrade cell performance. Herein, a device architecture incorporating an anion-exchange membrane (AEM) with intern

SUBMITTER: Petrov KV 

PROVIDER: S-EPMC9642111 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature