Fabrication of an Anode‐Supported Gadolinium‐Doped Ceria Solid Oxide Fuel Cell and Its Operation at 550°C

Ce 0.9 Gd 0.1 O 2− x (CGO) layers were deposited onto nonconductive porous NiO–CGO supports by electrophoretic infiltration, and then compacted by isostatic pressing to achieve a high packing density of the deposited layer. The bilayers were sintered to give dense CGO layers at 1290°C in air. A fuel cell comprising an La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3− x cathode, a 10‐μm CGO electrolyte, and a Ni–CGO anode was tested at 550°C with humidified 10% H 2 and air. The cell showed an open circuit voltage of 0.86 V and delivered a steady current of about 470 mA/cm 2 at a terminal voltage of 0.24 V.