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Electrochemically active oxide-based anodes capable of working in Single-Chamber Solid Oxide Fuel Cells (SC-SOFCs) were developed. Their performance is related to the selectivity of the electrodes. Tests are carried out on lab-scale devices with YSZ pellets as solid electrolytes in electrolyte supported cells. Selecting methane as a fuel, a gas mixture in the ratio CH 4 /O 2  = 2 was chosen. The Ni-YSZ (NiO:YSZ=60:40) anode was optimized through CeO 2  nanocatalysts infiltration to enhance the anode catalytic activity and make its reduction easier. Several infiltration amounts were compared, from null to 15% of the electrode weight. Both symmetric and complete cells (with LSCF-based cathodes) were tested in H 2  and CH4/O 2 . For increasing amounts of infiltrated CeO 2 , symmetric cells tests describe an area specific resistance (ASR) reduction from 40 Ω cm 2  to 1.7 Ω cm 2  in hydrogen and from 11 Ω cm 2  to 3.9 Ω cm 2  in the methane/oxygen mixture. While complete cells tests displayed an ASR drop from 30 Ω cm 2  to 2.9 Ω cm 2  in H2, and from 8.7 Ω cm 2  to 4.3 Ω cm 2  in the methane/oxygen mixture, while OCP and power grew from 478 mV and 3.7 mW cm -2  to 766 mV and 13 mW cm -2 .

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Comparison of different infiltration amounts of CeO<sub>2</sub> inside Ni-YSZ anodes to improve stability and efficiency of Single-Chamber SOFCs operating in methane

Comparison of different infiltration amounts of CeO2 inside Ni-YSZ anodes to improve stability and efficiency of Single-Chamber SOFCs operating in methane

Comparison of different infiltration amounts of CeO₂ inside Ni-YSZ anodes to improve stability and efficiency of Single-Chamber SOFCs operating in methane