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CFD analysis of a symmetrical planar SOFC with heterogeneous electrode properties

Shi, Junxiang ; Xue, Xingjian

Electrochimica acta, 2010-07, Vol.55 (18), p.5263-5273 [Periódico revisado por pares]

Kidlington: Elsevier Ltd

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Título:
CFD analysis of a symmetrical planar SOFC with heterogeneous electrode properties
Autor: Shi, Junxiang ; Xue, Xingjian
Assuntos: 30 DIRECT ENERGY CONVERSION ; Applied sciences ; Bi-electrode supported ; catalysis (heterogeneous), energy storage (including batteries and capacitors), hydrogen and fuel cells, mechanical behavior, charge transport, membrane, carbon sequestration, materials and chemistry by design, synthesis (novel materials), synthesis (self-assembly), synthesis (scalable processing) ; CFD model ; Charge ; Computational fluid dynamics ; Design engineering ; Electrodes ; Energy ; Energy. Thermal use of fuels ; Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc ; Exact sciences and technology ; Fuel cells ; Functionally graded ; Heterogeneous electrode ; Mathematical models ; Porosity ; SOFC ; Solid oxide fuel cells ; Transport
É parte de: Electrochimica acta, 2010-07, Vol.55 (18), p.5263-5273
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
SC0001061
Descrição: A comprehensive 2-D CFD model is developed to investigate bi-electrode supported cell (BSC) performance. The model takes into account the coupled complex transport phenomena of mass/heat transfer, charge (electron/ion) transport, and electrochemical reactions. The uniqueness of this modeling work is that heterogeneous electrode properties are taken into account, which includes not only linear functionally graded porosity distribution but also various nonlinear distributions in a general sense according to porous electrode features in BSC design. Extensive numerical analysis is performed to elucidate various heterogeneous porous electrode property effects on cell performance. Results indicate that cell performance is strongly dependent on porous microstructure distributions of electrodes. Among the various porosity distributions, inverse parabolic porosity distribution shows promising effects on cell performance. For a given porosity distribution of electrodes, cell performance is also dependent on operating conditions, typically fuel/gas pressure losses across the electrodes. The mathematical model developed in this paper can be utilized for high performance BSC SOFC design and optimization.
Editor: Kidlington: Elsevier Ltd
Idioma: Inglês

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CFD analysis of a symmetrical planar SOFC with heterogeneous electrode properties

Shi, Junxiang ; Xue, Xingjian

Kidlington: Elsevier Ltd

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