About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Materials for Energy Conversion and Storage 2023
|
Presentation Title |
In-situ Mitigation of Chromium Poisoning in SOFC Air Electrodes |
Author(s) |
Michelle Sugimoto, Zhikuan Zhu, Srikanth Gopalan, Soumendra Basu, Uday Bhanu Pal |
On-Site Speaker (Planned) |
Uday Bhanu Pal |
Abstract Scope |
Chromium poisoning of the air electrode remains an obstacle to the long-term performance of solid oxide fuel cells (SOFCs). In this work, electrochemical cleaning as a new poisoning mitigation method, is investigated. In this approach, a mild anodic bias is applied to reverse the deposition reactions that form chromium-rich deposits. Experiments are performed on cells with LSM/YSZ composite air electrodes. It was found that electrochemical cleaning removes Cr2O3 deposits but not the Mn, Cr spinel (MnCr2O4) deposits. Strategies to overcome this challenge and the prospect of using in-situ electrochemical cleaning for MIEC (mixed ionic electronic conducting) air electrodes will also be presented. |
Proceedings Inclusion? |
Planned: |
Keywords |
Energy Conversion and Storage, Characterization, High-Temperature Materials |