In situ electrochemical reconstruction of Sr₂Fe_1.45Ir_0.05Mo_0.5O_6-δ perovskite cathode for CO₂ electrolysis in solid oxide electrolysis cells.

ABSTRACT: Solid oxide electrolysis cells provide a practical solution for the direct conversion of CO₂ to other chemicals (i.e. CO), however, an in-depth mechanistic understanding of the dynamic reconstruction of active sites for perovskite cathodes during CO₂ electrolysis remains a great challenge. Herein, we identify that iridium-doped Sr₂Fe_1.45Ir_0.05Mo_0.5O_6-δ (SFIrM) perovskite displays a dynamic electrochemical reconstruction feature during CO₂ electrolysis with abundant exsolution of highly dispersed IrFe alloy nanoparticles on the SFIrM surface. The in situ reconstructed IrFe@SFIrM interfaces deliver a current density of 1.46 A cm^-2 while maintaining over 99% CO Faradaic efficiency, repres

SUBMITTER: Shen Y 

PROVIDER: S-EPMC10411681 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature