Modelling of a Monolithic Solid Oxide Fuel Cell

G.J. Williams; Y. K. Chen; F.S. Bhinde

doi:10.4028/www.scientific.net/AMR.750-752.1718

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 750-752Modelling of a Monolithic Solid Oxide Fuel Cell

Modelling of a Monolithic Solid Oxide Fuel Cell

Abstract:

The paper presents a bespoke mathematical model that simulates the electrochemical, thermal and fluid-dynamic interactions in a solid oxide fuel cell. This model is created for the purpose of evaluating and optimising a novel SOFC architecture. The proprietary fuel cell design consists of cathode supported cross-flow monolithic flow channels of hexagonal honeycomb section. The monolithic cells are constructed from porous cathodic material, with porous anodic and dense electrolytic material deposited inside specific hexagons such that any anodic cell is surrounded by six cathodic cells. Current collection is achieved by bus-plating on the monolith perpendicular to the direction of flow, and using thin interconnects attached to a corner of an anodic cell. The mathematical model considers a single side of the hexagon to simulate electrochemical interactions combined with heat and mass transfer. The finite difference technique is applied to predict numerically from a given current value voltage potential, temperature, fuel and oxidant compositions and partial pressures at the electrolyte/electrode interfaces. The model can be treated as a small segment of any geometry, thus can be, with added complexities of non-uniformity in surface thickness, extended to other shapes, and therefore used as an aid at the design stage to choose the values of geometric variables such as electrode and electrolyte thickness, etc.

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Periodical:

Advanced Materials Research (Volumes 750-752)

Pages:

1718-1733

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.750-752.1718

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Online since:

August 2013

Authors:

G.J. Williams*, Y. K. Chen, F.S. Bhinde

Keywords:

Mathematical Modeling, Monolithic, Novel Design, Simulation, Solid Oxide Fuel Cell (SOFC)

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* - Corresponding Author

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