COMPARISON OF POWER DENSITIES AND CHEMICAL-POTENTIAL VARIATION IN SOLID OXIDE FUEL-CELLS WITH MULTILAYER AND SINGLE-LAYER OXIDE ELECTROLYTES

Several multilayer and single-layer mixed conducting oxide structures are compared for their use as electrolytes in solid oxide fuel cells. Detailed calculations of the power density characteristics and the var iation of the oxygen chemical potential gradient as a function of the external load and thickness of the oxide layers are provided. Engineer ing implications of the analysis in terms of designing efficient as we ll as mechanically and chemically stable fuel cells with a layered ele ctrolyte structure are also provided.