An efficient symmetrical solid oxide electrolysis cell with LSFM-based electrodes for direct electrolysis of pure CO2

In this paper, we study the perovskite La0.6Sr0.4Fe0.9Mn0.1O3-delta (LSFM) as both the cathode and anode in a symmetrical solid oxide electrolysis cell (SOEC) for direct high-temperature electrolysis of pure CO2. The cell with a configuration of LSFM-GDC vertical bar GDC vertical bar vertical bar YSZ vertical bar vertical bar GDC vertical bar LSFM-GDC performs with perfect electrochemical properties with a polarization resistance of 0.068 Omega cm(2) and a current density of 1.107 A/cm(2) at 800 degrees C and 1.744 A/cm(2) at 850 degrees C under an operating voltage of 2.0 V. The corresponding CO production rate at 800 degrees C and 2.0 V is 6.438 mL/(min.cm(2)). These results confirm that La0.6Sr0.4Fe0.9Mn0.1O3-delta can act as an excellent electrode material in a symmetrical SOEC for electrolysis of pure CO2.