| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Process Metallurgy and Electrochemistry of Molten Salts, Liquid Metal Batteries, and Extra-terrestrial Materials Processing: An EPD Symposium in Honor of Don Sadoway
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| Presentation Title |
Study of Electrode Performance Improvement with Infiltration of Electronic and Mixed-conducting Nanoparticles Employing Electrochemical Impedance Spectroscopy and I-V Measurements |
| Author(s) |
Uday Bhanu Pal, Paul Gasper, Yanchen Lu, Srikanth Gopalan, Soumendra Basu |
| On-Site Speaker (Planned) |
Uday Bhanu Pal |
| Abstract Scope |
Nickel-Ytrria Stabilized Zirconia (Ni-YSZ) cermets are used as fuel oxidation anodes in solid oxide fuel cells (SOFCs). In this work, SOFCs with Ni-YSZ anodes were infiltrated separately with nanoparticles of nickel, mixed-conducting gadolinium-doped ceria (GDC), and Ni-GDC composites. Their electrochemical performances were evaluated under different conditions employing impedance spectroscopy and I-V measurements and compared with an uninfiltrated Ni-YSZ anode cell. All infiltrated cells showed improved performances compared to the uninfiltrated cell, with the Ni-GDC composite infiltration demonstrating the highest performance improvement under all conditions. The roles of the various infiltrants in the performance improvement process were analyzed in terms of their impact on charge and mass transfer resistances of the anode to explain the results. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |