Mo,Cu-doped CeO2 as Anode Material of Solid Oxide Fuel Cells (SOFCs) using Syngas as Fuel

Mo, Cu-doped CeO2 (CMCuO) nanopowders were synthesized by the nitrate-fuel combustion method aiming to improve electrical and electrochemical properties of its Mo-doped (CMO) parent addition copper. An conductivity ca. 1.22·10−2 S cm−1 was measured in air at 800°C for CMCuO, which is nearly 10 times higher than that reported CMO. This increase associated with inclusion copper into crystal lattice ceria presence Cu Cu2O as secondary phases CMCuO structure, also could explain charge transfer activities based anode hydrogen carbon monoxide electro-oxidation processes compared CMO anode. A maximum power density 120 mW cm−2 using a solid oxide fuel cell (SOFC) YSZ electrolyte LSM-YSZ cathode operating humidified syngas fuel, comparable output other SOFCs anodes containing area specific resistance SOFC observed after hours operation under cycling open circuit voltage polarization conditions, attributed delamination caused reduction phase contained microstructure. Therefore, more electroactive oxidation suggested confer long-term stability Keywords: Anode Material, Ceria, Molybdenum Oxide, Copper Nanoparticles, Syngas Fuel