The current density and temperature distributions of anode-supported flat-tube solid oxide fuel cells affected by various channel designs

The concentration gradient of fuel and oxidant gas is great in the plane normal to the solid oxide fuel cells (SOFC) three-phase-boundary (TPB) layer, especially in the porous electrode. We present a novel interconnector design, termed bilayer interconnector, for SOFC. It can distribute the fuel and air gas in the plane normal to the SOFC TPB layer. In this paper, we develop a 3D model to study the current density of the SOFC with conventional and novel bi-layer interconnectors. The numerical results show that the novel SOFC design Rib1 can slightly enhance the mass transfer in the porous anode and current density. The novel SOFC design Rib2 can improve the current density significantly under low electrical conductivity of interconnector.

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Determination of Factors Governing Degradation of Anode-Supported Solid Oxide Fuel Cells as Influenced by Current Density and Humidity

ECS Transactions ◽

10.1149/10301.1121ecst ◽

2021 ◽

Vol 103 (1) ◽

pp. 1121-1128

Author(s):

Riyan Achmad Budiman ◽

Katherine Develos Bagarinao ◽

Tomohiro Ishiyama ◽

Toshiaki Yamaguchi ◽

Haruo Kishimoto ◽

...

Keyword(s):

Fuel Cells ◽

Solid Oxide Fuel Cells ◽

Current Density ◽

Solid Oxide ◽

Oxide Fuel

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Determination of Factors Governing Degradation of Anode-Supported Solid Oxide Fuel Cells as Influenced by Current Density and Humidity

ECS Meeting Abstracts ◽

10.1149/ma2021-03173mtgabs ◽

2021 ◽

Vol MA2021-03 (1) ◽

pp. 73-73

Author(s):

Riyan Achmad Budiman ◽

Katherine Develos Bagarinao ◽

Tomohiro Ishiyama ◽

Toshiaki Yamaguchi ◽

Haruo Kishimoto ◽

...

Keyword(s):

Fuel Cells ◽

Solid Oxide Fuel Cells ◽

Current Density ◽

Solid Oxide ◽

Oxide Fuel

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Efficient and durable ammonia power generation by symmetric flat-tube solid oxide fuel cells

Applied Energy ◽

10.1016/j.apenergy.2020.115185 ◽

2020 ◽

Vol 270 ◽

pp. 115185 ◽

Cited By ~ 3

Author(s):

Yuanhui Wang ◽

Yuchen Gu ◽

Hua Zhang ◽

Jun Yang ◽

Jianxin Wang ◽

...

Keyword(s):

Power Generation ◽

Fuel Cells ◽

Solid Oxide Fuel Cells ◽

Solid Oxide ◽

Oxide Fuel ◽

Flat Tube

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A Multiphysics Modeling Study of (Pr0.7Sr0.3)MnO3±δ∕8mol% Yttria-Stabilized Zirconia Composite Cathodes for Solid Oxide Fuel Cells

Journal of Fuel Cell Science and Technology ◽

10.1115/1.1842782 ◽

2004 ◽

Vol 2 (1) ◽

pp. 45-51 ◽

Cited By ~ 3

Author(s):

Ke An ◽

Kenneth L. Reifsnider

Keyword(s):

Fuel Cells ◽

Ionic Conductivity ◽

Solid Oxide Fuel Cells ◽

Current Density ◽

Composite Cathode ◽

Solid Oxide ◽

Yttria Stabilized Zirconia ◽

Oxide Fuel ◽

Stabilized Zirconia ◽

Before And After

Solid oxide fuel cells (SOFCs) are expected to be a future power source. Simulation analyses of SOFCs can help to understand well the interactive functions among the multiphysics phenomena in the SOFC system. A three-dimensional multiphysics finite-element model was used to simulate the performance of a half-cell SOFC with (Pr0.7Sr0.3)MnO3±δ∕8mol% yttria-stabilized zirconia (8YSZ) composite cathode on one side of the 8YSZ electrolyte before and after aging. Multiphysics phenomena in the SOFC were considered in the modeling. The current/voltage curves simulated matched the experimental data before and after aging. The average current density was found to have a linear relationship to the logarithm of the effective exchange current density. The effect of the effective ionic conductivity of the composite cathode was more apparent for small total effective ionic conductivity values than for large ones.

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