|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Composites for Energy Applications: Materials for Renewable Energy Applications 2022
||Co-infiltration of Solid Oxide Fuel Cell Anodes with Ni/Mixed Ionic and Electronic Conducting Catalyst Nanoparticles
||Soumendra Basu, Jillian Rix, Srikanth Gopalan, Uday Pal
|On-Site Speaker (Planned)
The hydrogen oxidation reaction occurs at the triple phase boundaries (TPBs) of Ni/YSZ (cermet) solid oxide fuel cell anodes. Infiltrated Ni nanoparticles deposited on the YSZ phase can create additional TPBs. However, the Ni nanoparticles need to have an electronically conducting pathway to the percolated Ni grains in the cermet anode for the additional TPBs to be active. Co-infiltration of Ni with a mixed ionic and electronic conducting (MIEC) phase such as gadolinium doped ceria (GDC) can lead to a composite microstructure of infiltrated phases, that can activate a majority of the additional TPBs. Quantitative microstructural analysis of the infiltrated phases will be related to changes in I-V response of the cells, and electrochemical impedance spectroscopy (EIS) will be used to gain insights into changes in the reaction mechanisms occurring in the infiltrated cells.
||Energy Conversion and Storage, High-Temperature Materials, Characterization