A general electrolyte–electrode-assembly model for the performance characteristics of planar anode-supported solid oxide fuel cells

Hussain, Mohammed; Li, X.; Dinçer, İbrahim

doi:10.1016/j.jpowsour.2008.12.121

Cited by 72 publications

(19 citation statements)

References 36 publications

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“…Their numerical results shown that the increase of either porosity or tortuosity of electrodes leads to worse cell performance, while better cell performance is obtained when the volume fraction of electronic conducting particles is approximately equal to that of ionic conducting particles in reaction zone. Recently they extended their investigation to the cell design with two distinct layers of anode electrode, e.g., reaction layer and backing layer [19]. Shi et al [20] studied a two-dimensional anode-supported button cell with fully composite electrodes and took into account the anodic surface diffusion effect.…”

Section: Introductionmentioning

confidence: 99%

CFD analysis of a symmetrical planar SOFC with heterogeneous electrode properties

Shi

Xue

2010

Electrochimica Acta

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Section: Introductionmentioning

confidence: 99%

CFD analysis of a symmetrical planar SOFC with heterogeneous electrode properties

Shi

Xue

2010

Electrochimica Acta

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“…Here, the effective binary diffusion coefficient D ij eff of component i and j in gas channels and porous layers was obtained from literature [23]:…”

Section: Mathematical Modelmentioning

confidence: 99%

“…The models are calculated by COMSOL Multiphysics and the components of inlet fuel are listed in Table 1 [23].…”

Section: Mathematical Modelmentioning

confidence: 99%

Electrical Performance and Carbon Deposition Differences between the Bi-Layer Interconnector and Conventional Straight Interconnector Solid Oxide Fuel Cell

Yan

Pei

Chen³

et al. 2014

Energies

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Carbon deposition considered in a solid oxide fuel cell (SOFC) model may be influenced by the operating voltage, inlet water/methane ratio, working temperature and pressure, inlet molar fraction of fuel and so on. The effects of these parameters in a planar SOFC implementing a novel bi-layer interconnector are not well understood. This paper is focused on the numerical study of carbon deposition and electrical performance of a bi-layer interconnector planar SOFC. The results illustrate that the electrical performance of the bi-layer interconnector SOFC is 11% higher than that of the conventional straight interconnector SOFC with initial state. After 120 days of operation, the electrical performance of the bi-layer interconnector SOFC has a slight decrease and more carbon deposit because of the increased electrochemical reaction rate. However, these differences minimize if higher operating voltages are involved.

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“…The Darcy's law is used as source terms in momentum equations (Eqs. (13) and (14)) so that the momentum equations are valid for both the gas channels and the porous electrodes [64]:…”

Section: Computational Fluid Dynamics Modelmentioning

confidence: 99%

“…Instead, CO can be used as a fuel in an SOFC. Thus alternative fuels, like methane, methanol, and ethanol, can be used in SOFCs for power generation [11][12][13][14][15][16][17][18][19][20][21]. The fuel flexibility makes SOFCs more advantageous than hydrogen-fueled fuel cells, as it is still very difficult to produce and store hydrogen effectively and economically.…”

Section: Introductionmentioning

confidence: 99%

Electrolytic effect in solid oxide fuel cells running on steam/methane mixture

2011

Journal of Power Sources

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a b s t r a c tA two-dimensional model is developed to study the performance of a planar solid oxide fuel cell (SOFC) running on steam/methane mixture. The model considers the heat/mass transfer, electrochemical reactions, direct internal reforming of methane (CH 4 ), and water gas shift reaction in an SOFC. It is found that at an operating potential of 0.8 V, the upstream and downstream of SOFC work in electrolysis and fuel cell modes, respectively. At the open-circuit voltage, the electricity generated by the downstream part of SOFC is completely consumed by the upstream through electrolysis, which is contrary to our common understanding that electrochemical reactions cease under the open-circuit conditions. In order to inhibit the electrolytic effect, the SOFC can be operated at a lower potential or use partially pre-reformed CH 4 as the fuel. Increasing the inlet gas velocity from 0.5 m s −1 to 5.0 m s −1 does not reduce the electrolytic effect but decreases the SOFC performance.

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A general electrolyte–electrode-assembly model for the performance characteristics of planar anode-supported solid oxide fuel cells

Cited by 72 publications

References 36 publications

CFD analysis of a symmetrical planar SOFC with heterogeneous electrode properties

CFD analysis of a symmetrical planar SOFC with heterogeneous electrode properties

Electrical Performance and Carbon Deposition Differences between the Bi-Layer Interconnector and Conventional Straight Interconnector Solid Oxide Fuel Cell

Electrolytic effect in solid oxide fuel cells running on steam/methane mixture

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