... compounds electrical conductivity electrochemical electrodes electrolytes electron mobility gadolinium compounds hole mobility iron compounds metal-insulator transition powders samarium compounds stoichiometry solid oxide fuel cells double perovskite oxygen nonstoichiometry electrical...

... 06 2007 13 08 2008 12 08 2009 convection cooling electrochemical electrodes heat conduction heating elements proton exchange membrane fuel cells stoichiometry temperature control High temperature proton exchange membrane (HTPEM) fuel cells are considered attractive...

... relative humidity sensors embedded in the anode and cathode flow field plates. The effects of the relative humidity and stoichiometry of the cathode inlet on relative humidity distribution in the channels and on water accumulation in the gas diffusion layers (GDLs) were investigated in this study...

... ). mixed ionic electronic conductors (MIEC) K 2 NiF 4 structures cathode intermediate temperature solid oxide fuel cell (IT-SOFC) neutron diffraction solid oxide fuel cells electrochemical electrodes cathodes mixed conductivity ionic conductivity strontium association stoichiometry heat...

... stoichiometry varied at the surface in both cases. The effect of this change on the performance of the cathode material La 2 Ni O 4 + δ was assessed through ac impedance spectroscopy of symmetrical cells prepared by depositing La 2 Ni O 4 + δ on the surface of pellets of La 0.9 Sr 0.1 Ga 0.8 Mg 0.2 O 3 − δ...