Thin solid film electrolyte and its impact on electrode polarization in solid oxide fuel cells studied by three-dimensional microstructure-scale numerical simulation

Tomasz A. Prokop, Grzegorz Brus, Shinji Kimijima, Janusz S. Szmyd

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

In this work, a three-dimensional microstructure-scale model of a Solid Oxide Fuel Cell’s Positive-Electrolyte-Negative assembly is applied for the purpose of investigating the impact of decreasing the electrolyte thickness on the magnitude, and the composition of electrochemical losses generated within the cell. Focused-Ion-Beam Scanning Electron Microscopy reconstructions are used to construct a computational domain, in which charge transport equations are solved. Butler–Volmer model is used to compute local reaction rates, and empirical relationships are used to obtain local conductivities. The results point towards three-dimensional nature of transport phenomena in thin electrolytes, and electrode-electrolyte interfaces.

Original languageEnglish
Article number5127
JournalEnergies
Volume13
Issue number19
DOIs
Publication statusPublished - 2020 Oct

Keywords

  • Electrolyte
  • Focused ion beam scanning electron microscopy
  • Microstructure
  • Simulation
  • Solid oxide fuel cell

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Energy (miscellaneous)
  • Control and Optimization
  • Electrical and Electronic Engineering

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