Boosting CO(2)electrolysis performanceviacalcium-oxide-looping combined within situexsolved Ni-Fe nanoparticles in a symmetrical solid oxide electrolysis cell

摘要

The electrocatalysis of CO(2)to valuable chemical products is an important strategy to combat global warming. Symmetrical solid oxide electrolysis cells have been extensively recognized for their CO(2)electrolysis abilities due to their high efficiency, low cost, and reliability. Here, we produced a novel electrode containing calcium oxide-looping andin situexsolved Ni-Fe nanoparticles by performing a one-step reduction of La0.6Ca0.4Fe0.8Ni0.2O3-delta(LCaFN). The CO(2)captured by CaO was electrolyzedin situby the Ni-Fe nanocatalysts. The cell with this special cathode showed a higher current density (0.632 A cm(-2)vs.0.32 A cm(-2)) and lower polarization resistance (0.399 omega cm(2)vs.0.662 omega cm(2)) than the unreduced LCaFN cathode at 800 degrees C with an applied voltage of 1.3 V. Use of the developed novel electrode offers a promising strategy for CO(2)electrolysis.