Fig. 4: Enhanced formate production on Cu under high pressure enabled by a proton-resistant layer.
From: Pressure dependence in aqueous-based electrochemical CO2 reduction
a Schematic of the proton-resistant cathode surface functionalized by the PPy layer. b N 1 s and C 1 s XPS spectra of the Cu/PPy catalyst. FEs and partial current densities toward formate on Cu and Cu/PPy catalysts as a function of c pressure at −1.1 V vs. RHE, and d cathode potential under 50 bar. j denotes the current density.
