About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Materials for Energy Conversion and Storage VII
|
Presentation Title |
Infiltration Strategies to Improve the Performance of Solid Oxide Fuel Cell Anodes |
Author(s) |
Soumendra Basu, Boshan Mo, Jillian Rix, Srikanth Gopalan, Uday Pal |
On-Site Speaker (Planned) |
Soumendra Basu |
Abstract Scope |
In this study, the performance of SOFC anodes processed using different infiltration strategies have been compared. In Ni/YSZ anodes, reactions occur at triple phase boundaries (TPBs). While infiltration of Ni nanoparticles increases the TPB density, additional TPBs created by infiltration that do not have electronically conduction pathways to the percolated Ni in the Ni/YSZ cermet are not electrochemically active, and do not contribute to performance improvement of the anode. Different strategies to provide such a conducting pathway have been explored. These include, spreading the Ni nanoparticles to form a percolating network at temperature, co-infiltration of Ni with a mixed ionic and electronic conducting (MIEC) phase, and doping the YSZ in the Ni/YSZ cermet to promote electronic conductivity between the Ni nanoparticles. Electrochemical I-V and EIS studies of full and symmetric cells, as well as fracture cross-section SEM analysis to characterize changes in the nanoparticle microstructure, will be discussed. |
Proceedings Inclusion? |
Planned: |