Exchange current density of reversible solid oxide cell electrodes

Reversible solid oxide cells (r-SOCs) can be operated in either fuel cell or electrolysis mode. They are expected to become important the support of renewable energy due their high efficiency for both power generation and hydrogen generation. The exchange current density is one most parameters quantification electrode performance cells. In this study, four different electrodes two air fabricated using materials microstructures compared. temperature, humidification, oxygen concentration at varied obtain apparent materials. contrast ruthenium-and-gadolinia-doped ceria (Rh-GDC) as well nickel-and-gadolinia-doped (Ni-GDC) electrodes, significant differences were observed between modes nickel-scandia-stabilized zirconia (Ni-ScSZ) cermet. Variation gas revealed that surface adsorption sites almost completely vacant all these electrodes. densities obtained study useful a parameter simulation internal properties r-SOCs.