Novel Ceria-Based Materials for Low-Temperature Solid Oxide Fuel Cells

65886 New fossil fuel energy systems are required that consume less fuel and generate less greenhouse gases and polluting emissions. Moreover, the cost of these systems must be comparable to that of current systems. The solid oxide fuel cell (SOFC) is a candidate technology for meeting these requirements, and this project will utilize low-cost materials, synthesis, and fabrication techniques to allow SOFCs to operate efficiently at less than 600¿C. In Phase I, the chemical, electrochemical, and processing-related properties of ceria-based anodes and electrolytes were evaluated. Selected materials were fabricated into SOFCs using low cost manufacturing techniques, and cathode materials were evaluated for low temperature operation. In Phase II, composite cathode materials will be developed for a range of near and long-term electrolyte systems. Novel electrochemical screening techniques will be used to select materials for evaluation. The anode supported ceria geometrics, identified in Phase I, will serve as test cells for low-temperature evaluation. Commercial Applications and Other Benefits as described by the awardee: Commercial applications include residential power and heat, remote power generators, military power supplies, auxiliary power units for transportation, and stationary power.