Thin Solid Film Electrolyte and Its Impact on Electrode Polarization in Solid Oxide Fuel Cells Studied by Three-Dimensional Microstructure-Scale Numerical Simulation

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 wi...

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Bibliographic Details
Published in:Energies (Basel) 2020-10, Vol.13 (19), p.5127
Main Authors: Prokop, Tomasz A., Brus, Grzegorz, Kimijima, Shinji, Szmyd, Janusz S.
Format: Article
Language:English
Subjects:
Charge transport
Computer applications
Electrochemistry
Electrode polarization
Electrodes
electrolyte
Electrolytes
Electrolytic cells
Finite volume method
focused ion beam scanning electron microscopy
Fuel cells
Fuel technology
Interfaces
Ion beams
Mathematical models
Microstructure
Scale models
Scanning electron microscopy
Simulation
solid oxide fuel cell
Solid oxide fuel cells
Transport equations
Transport phenomena
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Summary: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.
ISSN:1996-1073
1996-1073
DOI:10.3390/en13195127