Phase-field modeling of three-phase electrode microstructures in solid oxide fuel cells

Qun Li, Linyun Liang, Kirk Gerdes, Long Qing Chen

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

A phase-field model for describing three-phase electrode microstructure (i.e., electrode-phase, electrolyte-phase, and pore-phase) in solid oxide fuel cells is proposed using the diffuse-interface theory. Conserved composition and non-conserved grain orientation order parameters are simultaneously used to describe the coupled phase coarsening and grain growth in the three-phase electrode. The microstructural evolution simulated by the phase-field approach demonstrates the significant dependence of morphological microstructure and output statistic material features on the prescribed kinetic parameters and three-phase volume fractions. The triple-phase boundary fraction is found to have a major degradation in the early evolution.

Original languageEnglish (US)
Article number033909
JournalApplied Physics Letters
Volume101
Issue number3
DOIs
StatePublished - Jul 16 2012

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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