| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Energy Conversion and Storage VI
|
| Presentation Title |
Enhancing Anodic Catalytic Activity in Solid Oxide Fuel Cells by Liquid Phase Infiltration |
| Author(s) |
Soumendra Basu, Yanchen Lu, Paul Gasper, Boshan Mo, Srikanth Gopalan, Uday Pal |
| On-Site Speaker (Planned) |
Soumendra Basu |
| Abstract Scope |
Infiltration of nickel (Ni) nanoparticles into anodes of solid oxide fuel cell (SOFC) leads to an increase in the triple phase boundary (TPB) density. However, the deposited Ni nanoparticles on the yttria stabilized zirconia (YSZ) grains of the anode are isolated, and the lack of an electronic pathway makes the added TPBs inactive. The role of current density in spreading these nanoparticles to activate the newly formed TPBs was studied. Additionally, co-infiltrating of Ni and gadolinium-doped ceria (GDC), a mixed ionic electronic conducting (MIEC) phase was also explored. The GDC phase connects nickel nanoparticles, enabling them to be electrochemically active and stabilizes them to mitigate coarsening during operation at high fuel utilization conditions. Electrochemical I-V and EIS results to measure performance, and fracture cross-section SEM and TEM analysis to characterize the infiltrated microstructure and quantify particle degradation, will be presented. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |