Design of an elevated pressure electrochemical flow cell for CO2 reduction

Abstract The electrochemical CO 2 reduction reaction (CO RR) has been proposed as a sustainable way of closing the carbon cycle while synthesizing useful commodity chemicals. One possible routes to scale up process is elevated pressure RR, this increases concentration poorly soluble in aqueous systems. Yet, there are not many studies that focus on route owing inherent challenges with high In study, novel flow cell setup designed and validated. modular design uses clamp system, which facilitates simple stacking multiple parts being capable handling pressures 50 bar. effects were investigated gold (Au) foil cathode 0.1 M KHCO 3 electrolyte. We successfully measured gaseous products produced during operation using an inline gas chromatograph. find selectivity toward enhanced H evolution suppressed increased from 30 reported provides robust means conduct electrolysis experiments easy safe manner, making technology more accessible RR community. Graphical abstract