Direct electrochemical oxidation of carbon particles in a solid oxide fuel cell was investigated at 800-950°C by recording current voltage curves for CO, CO, H₂ and Ar as anode gas. The carbon was in contact with thin 5-10μm porous anodes based on GDC (CeO₂ doped with Gd₂O₃). It was shown that carbon directly and not merely CO was electrochemically oxidized. The reaction displayed sluggish kinetics at the GDC anode, but was catalyzed at GDC/La₂O₃ anodes. E_A was reduced by 33% and j₀ was increased by factor 10 and more at 800°C.      «

Direct electrochemical oxidation of carbon particles in a solid oxide fuel cell was investigated at 800-950°C by recording current voltage curves for CO, CO, H₂ and Ar as anode gas. The carbon was in contact with thin 5-10μm porous anodes based on GDC (CeO₂ doped with Gd₂O₃). It was shown that carbon directly and not merely CO was electrochemically oxidized. The reaction displayed sluggish kinetics at the GDC anode, but was catalyzed at GDC/La₂O₃ anodes. E_A was reduced by 33% and j₀ was increase...     »