Microstructure Optimization Designs for Anode-Supported Planar Solid Oxide Fuel Cells

2011 ◽  
Vol 8 (6) ◽  
Author(s):  
Junxiang Shi ◽  
Xingjian Xue
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
High Performance ◽  
Performance Enhancement ◽  
High Current Density ◽  
Porous Electrode ◽  
Model Development ◽  
Operating Conditions ◽  
Solid Oxide ◽  
Oxide Fuel

Suitable porous electrode design may play a significant role in the performance enhancement of solid oxide fuel cells (SOFCs). In this paper a genetic algorithm optimization method is employed to design electrodes based on a 2D planar SOFC model development. The objective is to find suitable porosities and particle sizes distributions for both anode and cathode electrodes so that the cell performance can be maximized. The results indicate that the optimized heterogeneous morphology may better improve SOFC performance than the homogeneous counterpart, particularly under relatively high current density conditions. The optimization results are dependent on the operating conditions. The effects of inlet mass flow rates and fuel compositions are investigated. The proposed approach provides a systematical method for electrode microstructure designs of high performance SOFCs.

Heterogeneous Electrode Designs for Planar SOFC Optimizations

2011 ◽  
Author(s):  
Junxiang Shi ◽  
Xingjian Xue
Keyword(s):  
Solid Oxide Fuel Cells ◽  
High Performance ◽  
Performance Enhancement ◽  
High Current Density ◽  
Porous Electrode ◽  
Model Development ◽  
Optimization Method ◽  
Operating Conditions ◽  
Algorithm Optimization ◽  
Pressure Losses

Suitable porous electrode design may play a significant role in the performance enhancement of solid oxide fuel cells (SOFCs). In this paper, a genetic algorithm optimization method is employed to design electrodes based on a 2-D planar SOFC model development. The objective is to find out suitable porosity and particle size distributions for both anode and cathode electrodes so that the cell performance can be maximized. The results indicate that the optimized heterogeneous electrode may better improve SOFC performance than the homogeneous count-part, particularly under relatively high current density conditions. The optimization results are dependent on the operating conditions. The effects of pressure losses along the anode/cathode channels and inlet fuel compositions are investigated. The proposed approach provides a systematical method for electrode microstructure designs of high performance SOFCs.

Defective Sr0.9Mo0.9O3-δ perovskites with exsolved Ni nanoparticles as high-performance composite anodes for solid-oxide fuel cells

2021 ◽  
Author(s):  
Ana Laura Larralde ◽  
Loreto Troncoso ◽  
M. Consuelo Alvarez-Galvan ◽  
Vanessa Cascos ◽  
Maria Teresa Fernandez-Diaz ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Anode Material ◽  
High Performance ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Ni Nanoparticles ◽  
High Performance Composite ◽  
Composite Anodes ◽  
A Site

An A-site deficient perovskite with metallic Ni in exsolution, Ni-Sr0.9Mo0.9O3-δ, has been prepared, characterized and tested as an anode material in intermediate-temperature solid-oxide fuel cells (IT-SOFCs). It was obtained by...

Effect of Bi-Layer Interconnector Design on the Current Density of Solid Oxide Fuel Cells

2009 ◽  
Author(s):  
Qiuyang Chen ◽  
Jian Zhang ◽  
Qiuwang Wang ◽  
Min Zeng
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Current Density ◽  
Porous Electrode ◽  
Solid Oxide ◽  
The Novel ◽  
Oxide Fuel ◽  
Plane Normal ◽  
Three Phase ◽  
Porous Anode

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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