Abstract
A proton-conducting anode Ni/GDC(Gd_2O_3-doped Ce0_2)-BCY(BaCe_<0.8>Y_<0.2>O_<3-α>) has been proposed for a high power density Solid-Oxide-Fuel-Cell. The most striking feature is that, using the anode Ni/GDC-BCY(90%:10%), the polarized resistance which indicates an overpotential in anode is reduced to the half of that of the conventional anode Ni/GDC. As a result of our measurement, it is likely that the amount of adsorbed hydrogen on the surface of BCY is five times higher than that of GDC. It is clarified that adsorbed oxygen which is transferred as oxide ions through GDC particulates has large chance to react with the adsorbed hydrogen since much amount of hydrogen might be adsorbed on the surface of each BCY particulate distributed in the anode.
