|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advanced Materials for Energy Conversion and Storage 2022
||Microstructural Stability of Reversible Solid Oxide Electrochemical Cells Subjected to Mode Switching
||Hector Grande, Jillian Rix, Michelle Sugimoto, John-In Lee, Ayesha Akter, Srikanth Gopalan, Uday Pal, Soumendra Basu
|On-Site Speaker (Planned)
Reversible Solid Oxide Electrochemical Cells (RSOEC) with nickelate-based oxygen electrodes and Ni/YSZ fuel electrodes have been subjected to periodic switching between SOFC and SOEC operational modes. Microstructural changes such as interfacial reactions, delamination, grain coarsening, and Ni migration have been studied by SEM, TEM, XRD and FIB/SEM-based 3-D reconstruction. The extent of such changes will be related to the operating conditions such as operating temperature, current density, fuel and oxidant compositions, and mode switching frequency and duration. These microstructural changes will also be correlated to changes in the electrochemical performance of these cells.
||Energy Conversion and Storage, Characterization, High-Temperature Materials