Highly efficient CO2 electrolysis to CO on Ruddlesden–Popper perovskite oxide with in situ exsolved Fe nanoparticles

A highly active and stable catalyst La_1.2Sr_0.8Mn_0.4Fe_0.6O_4−α (R.P.LSMF) decorated with in situ exsolved Fe nanoparticles was derived from La_0.6Sr_0.4Mn_0.2Fe_0.8O_3−δ (LSMF) by simple annealing and applied to CO₂ electrolysis on solid oxide electrolysis cells (SOECs).