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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Advanced Materials for Energy Conversion and Storage 2022
Presentation Title Quantifying Triple Phase Boundary Density in Nanocatalyst-infiltrated SOFC Anodes Using 3-D Reconstruction and Scanning Electron Microscopy
Author(s) Jillian Rix, Hector Grande, Uday Pal, Srikanth Gopalan, Soumendra Basu
On-Site Speaker (Planned) Jillian Rix
Abstract Scope Detailed microstructural characterization is critical to understanding the catalytic processes and degradation mechanisms of solid oxide fuel cell (SOFC) anodes. However, the complexity of many SOFC anode microstructures, especially those infiltrated with nanoscale electrocatalysts such as Ni or gadolinium-doped ceria (GDC), make quantitative analyses of important properties such as triple phase boundary (TPB) density difficult. In this work, focused ion beam/scanning electron microscopy (FIB/SEM) is used in combination with cross-sectional SEM and electrochemical impedance spectroscopy (EIS) to establish a three-dimensional characterization of a Ni-YSZ anode infiltrated with Ni nanoparticles. This analysis contextualizes electrochemical performance with microstructural properties such as TPB density, phase percolation, and pore tortuosity.
Proceedings Inclusion? Planned:
Keywords Ceramics, Energy Conversion and Storage, Characterization

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