| About this Abstract |
| Meeting |
3rd World Congress on High Entropy Alloys (HEA 2023)
|
| Symposium
|
HEA 2023
|
| Presentation Title |
High Entropy Perovskite as Chromium Resistant Air Electrode for Intermediate-temperature Solid Oxide Electrolysis Cells |
| Author(s) |
Awa U. Kalu, Xingbo Liu, Wenyuan Li |
| On-Site Speaker (Planned) |
Awa U. Kalu |
| Abstract Scope |
Our research focuses on improving the performance and chromium resistance of Lanthanum Nickelate (LNO) air electrode solid oxide cells (SOCs). We use simple perovskite and high entropy perovskite (HEP) as the surface coating of the LNO backbone. It has been shown that simple perovskite coatings boost the oxygen exchange capabilities of LNO. This improvement is attributed to the introduction of transition metal cations into the LNO structure, enhancing its performance and suggesting the potential for tailored performance enhancements. The real highlight lies in the outstanding performance of HEP coatings. LNO coated with LSPYB demonstrated exceptional performance under normal and aging conditions. LNO coated with LSPGB showed remarkable resistance to chromium exposure, displaying significantly better performance than the self-coated LNO in chromium-rich environments. The unique behavior of LNO+LSPGB suggests its ability to withstand and potentially excel in challenging conditions. Our findings emphasize the potential of high entropy perovskite to enhance LNO's catalytic properties, paving the way for the development of stronger materials for SOCs and other applications where superior performance and durability are essential. |
| Proceedings Inclusion? |
Planned: Metallurgical and Materials Transactions |