TY - JOUR
AU - Boxun Hu
AU - Ka-Young Park
AU - Asia Sarycheva
AU - Robert Kostecki
AU - Fei Chen
AU - Michael C Tucker
AB - <p>Electrochemical conversion of CO<sub>2</sub> to CO is demonstrated with symmetric-structured metal supported solid oxide cells (MS-SOC). Perovskite Pr<sub>0.5</sub>Sr<sub>0.4</sub>Mn<sub>0.2</sub>Fe<sub>0.8</sub>O<sub>3−<italic>δ</italic>
                  </sub> (PSMF) and Pr<sub>6</sub>O<sub>11</sub> catalysts were infiltrated into the MS-SOC cathode and anode, using 3 cycles with firing at 850 °C and 8 cycles with firing at 800 °C, respectively. Upon reduction during operation, the perovskite PSMF was transformed to Ruddlesden–Popper structure with a highly efficient electrocatalytic activity. The impact of operating temperature (600–800 °C) and overpotential (0–1.8 V) on the CO<sub>2</sub> conversion was investigated. The highest CO<sub>2</sub> conversion of 57.2% was achieved at 750 °C and 1.8 V. During extended operation for 150 h at 750 °C and 1.2 V, a cell demonstrated relatively stable performance, with initial current density of 535 mA cm<sup>−2</sup> and CO<sub>2</sub> conversion of 23%. Degradation mechanisms were studied by posttest characterization.</p>
BT - Journal of The Electrochemical Society
DA - 01/01/2025
DO - 10.1149/1945-7111/adaa23
IS - 1
N2 - <p>Electrochemical conversion of CO<sub>2</sub> to CO is demonstrated with symmetric-structured metal supported solid oxide cells (MS-SOC). Perovskite Pr<sub>0.5</sub>Sr<sub>0.4</sub>Mn<sub>0.2</sub>Fe<sub>0.8</sub>O<sub>3−<italic>δ</italic>
                  </sub> (PSMF) and Pr<sub>6</sub>O<sub>11</sub> catalysts were infiltrated into the MS-SOC cathode and anode, using 3 cycles with firing at 850 °C and 8 cycles with firing at 800 °C, respectively. Upon reduction during operation, the perovskite PSMF was transformed to Ruddlesden–Popper structure with a highly efficient electrocatalytic activity. The impact of operating temperature (600–800 °C) and overpotential (0–1.8 V) on the CO<sub>2</sub> conversion was investigated. The highest CO<sub>2</sub> conversion of 57.2% was achieved at 750 °C and 1.8 V. During extended operation for 150 h at 750 °C and 1.2 V, a cell demonstrated relatively stable performance, with initial current density of 535 mA cm<sup>−2</sup> and CO<sub>2</sub> conversion of 23%. Degradation mechanisms were studied by posttest characterization.</p>
PB - The Electrochemical Society
PY - 2025
EP - 014507
T2 - Journal of The Electrochemical Society
TI - CO2 Electrolysis Using Metal-Supported Solid Oxide Cells with Infiltrated Pr0.5Sr0.4Mn0.2Fe0.8O3 −δ Catalyst
UR - https://doi.org/10.1149/1945-7111/adaa23
VL - 172
SN - 0013-4651, 1945-7111
ER -