|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Materials for Energy Conversion and Storage
||Rare Earth Nickelate Cathodes for SOFCs for Enhanced Oxygen Partial Pressure Operation
||Jane Banner, Srikanth Gopalan
|On-Site Speaker (Planned)
Conventional cathode materials such as strontium-doped lanthanum manganite (LSM) and strontium-doped lanthanum cobalt iron oxide (LSCF) have shown robust performance under atmospheric conditions. However, they may not be the most attractive for operation in 100% oxygen atmosphere which is required in certain applications.
Conventional perovskite cathodes either based on two-phase composite systems typified by LSM – yttria stabilized zirconia (YSZ) or mixed ionic electronic conducting (MIEC) LSCF may not exploit the 100% oxygen operation in certain applications. Based on recent prior work, we
have studied a set of rare earth nickelate cathode materials that are exciting from the standpoint of performance in 100% oxygen, and provide a rich avenue for interesting science related to the point defect chemistry, structure, surface science, and oxygen redox chemistry of transition metal oxides. We present cell test performance results in pure oxygen of such cathode materials and compare them with baseline cells.