%0 Journal Article %A Martha M Welander %A Boxun Hu %A Seraphim Belko %A Kevin X Lee %A Pawan K Dubey %A Ian Robinson %A Prabhakar Singh %A Michael C Tucker %B International Journal of Hydrogen Energy %D 2023 %G eng %N 4 %P 1533 - 1539 %R 10.1016/j.ijhydene.2022.10.008 %T Direct utilization of gaseous fuels in metal supported solid oxide fuel cells %U https://linkinghub.elsevier.com/retrieve/pii/S0360319922046316 %V 48 %8 01/2023 %! International Journal of Hydrogen Energy %X

Direct utilization and internal reforming of gaseous fuels is investigated on symmetric-architecture metal supported solid oxide fuel cells (MS-SOFCs) with thin ceramic electrolyte and scaffold backbone layers, and low cost ferritic stainless steel supports on both sides. Infiltrated Pr-oxide and Ni/samarium-doped ceria catalysts are added to the cathode and anode electrodes, respectively. Initial performance and durability is evaluated for MS-SOFCs operating with natural gas, propane, ammonia, and dimethyl ether at 700 °C. Cells for natural gas and propane utilize a novel high entropy alloy (HEA) catalyst for internal reforming with performance and degradation rates similar to H2 (0.5 W cm−2 and ∼12%/100 h). Initial testing with sulfur shows reversible degradation for levels found in natural gas and irreversible degradation for higher levels found in commercial propane. Overall, MS-SOFCs show successful fuel flexibility.