Effects of Anode Material and Fuel on Anodic Reaction of Solid Oxide Fuel Cells

Publisher Website
Google Scholar
Abstract
Anodic properties of solid oxide fuel cells have been evaluated for several anode/electrolyte systems. Anodic over‐voltage of metal/yttria‐stabilized zirconia (YSZ) interface was related with metal‐oxygen bonding strength and was the smallest for the Ni anode in the present study. The anodic polarization conductivity of Ni‐YSZ cermet/YSZ electrolyte interface strongly depended on oxygen partial pressure, , in fuel, but was independent of the kind of fuel (,, and ). The activation of oxygen ion appears to be the rate limiting step in the overall reaction. The overvoltages of Ni/ and Pt/samaria‐doped ceria (SDC) were very small as compared with those of Ni/ and Pt/YSZ. The anodic properties were also influenced by the oxide material mixed with Ni as a cermet component. The sequence of anodic polarization conductivities of Ni‐oxide cermet systems was .

This publication has 0 references indexed in Scilit: