Single chamber solid oxide fuel cell constructed from an yttria-stabilized zirconia electrolyte

A single chamber cell constructed from an yttria-stabilized zirconia solid electrolyte with a nickel anode and a strontium-doped lanthanum manganese oxide (La0.8Sr0.2MnO3) cathode can generate an electromotive force (emf) of 795 mV and a power density of 121 mW cm(-2) in a mixture of methane and air at a flow rate of 300 mL min(-1) and 950 degrees C. The simultaneous additions of 25 wt % gadolinium-doped cerium oxide (Ce0.8Gd0.2O1.9) and 15 wt % manganese oxide (MnO2) to the anode and cathode, respectively, further increased the emf to 833 mV and the power density to 162 mW cm(-2). (C) 1999 The Electrochemical Society. S1099-0062(99)03-023-0. All rights reserved.