Abstract
Composite electrolytes for Intermediate Temperature Solid Oxide Fuel Cell (ITSOFC) based on BaO–CeO 2–GdO 1.5 ternary system have been synthesized through conventional solid state reaction route. X-ray Diffraction (XRD) and Scanning Electron Microscope (SEM) studies confirm a two-phase microstructure. The bulk conductivity in air is found to increase with BaO content, in the temperature range of 150–250 °C, while the total conductivity in air at 800 °C decreases with BaO content. At 800 °C, the Open Cell Voltage (OCV) of Solid Oxide Fuel Cells (SOFCs) constructed using these electrolytes is higher than those for Ce 0.8Gd 0.2O 1.9.
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