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 and Janusz S. Szmyd
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Tomasz A. Prokop: Department of Fundamental Research in Energy Engineering, AGH University of Science and Technology, 30-059 Krakow, Poland
Grzegorz Brus: Department of Fundamental Research in Energy Engineering, AGH University of Science and Technology, 30-059 Krakow, Poland
Shinji Kimijima: Department of Machinery and Control Systems, Shibaura Institute of Technology, 135-8548 Tokyo, Japan
Janusz S. Szmyd: Department of Fundamental Research in Energy Engineering, AGH University of Science and Technology, 30-059 Krakow, Poland

Energies, 2020, vol. 13, issue 19, 1-14

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.

Keywords: solid oxide fuel cell; electrolyte; focused ion beam scanning electron microscopy; simulation; microstructure (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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