Solid oxide fuel cells (SOFC) 6 Anodes 4 Carbon dioxide 4 Catalyst activity 4 Catalytic behavior 4 Activation energy 2 Biogas 2 CO2-TPD 2 Carbonaceous compounds 2 Catalysts 2 Catalytic oxidation 2 Catalytic performance 2 Catalytic properties 2 CeO2-Fe2O3 solid solution 2 Ceria based materials 2 Ceria-based materials 2 Crystallite size 2 Drying 2 Electrocatalytic 2 Electrodes 2 Enhanced reducibility 2 Feed compositions 2 Freeze drying 2 Freeze drying method 2 Freeze-drying 2 Fuel cells 2 Greenhouse gases 2 High power density 2 Intermediate temperature solid oxide fuel cell 2 Intermediate temperatures 2