Development of a Geometrical Model for Optimizing Porous Anode Microstructure of Solid Oxide Fuel Cells

2008 ◽  
Vol 41 (4) ◽  
pp. 246-253 ◽  
Author(s):  
Hidetoshi Mori ◽  
Noboru Nonaka ◽  
Mitsukuni Mizuno ◽  
Hiroya Abe ◽  
Makio Naito
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Geometrical Model ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Anode Microstructure ◽  
Porous Anode

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.

Analysis of possibilities for carbon removal from porous anode of solid oxide fuel cells after different failure modes

2016 ◽  
Vol 302 ◽  
pp. 378-386 ◽  
Author(s):  
Vanja Subotić ◽  
Christoph Schluckner ◽  
Hartmuth Schroettner ◽  
Christoph Hochenauer
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Failure Modes ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Carbon Removal ◽  
Porous Anode

Microstructure degradation of Ni/CGO anodes for solid oxide fuel cells after long operation time using 3D reconstructions by FIB tomography

2017 ◽  
Vol 19 (21) ◽  
pp. 13767-13777 ◽  
Author(s):  
Atef Zekri ◽  
Martin Knipper ◽  
Jürgen Parisi ◽  
Thorsten Plaggenborg
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Operation Time ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
3D Reconstructions ◽  
Anode Microstructure ◽  
Sofc Anode ◽  
Long Operation

The 3D reconstructions of SOFC anode microstructure aged up to 20 000 h under realistic conditions was carried out with FIB/SEM tomography in order to calculate the microstructure key parameters.

Importance of Anode Microstructure in Modeling Solid Oxide Fuel Cells

2008 ◽  
Vol 155 (6) ◽  
pp. B538 ◽  
Author(s):  
Steven C. DeCaluwe ◽  
Huayang Zhu ◽  
Robert J. Kee ◽  
Gregory S. Jackson
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Anode Microstructure

Characterisation of NiO-YSZ Porous Anode-Support for Solid Oxide Fuel Cells Fabricated by Ceramic Injection Moulding

2017 ◽  
Vol 751 ◽  
pp. 467-470 ◽  
Author(s):  
Nutthita Chuankrerkkul ◽  
Sirima Chauoon ◽  
Malinee Meepho ◽  
Rojana Pornprasertsuk
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Injection Moulding ◽  
Large Scale ◽  
Water Soluble ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Ceramic Injection Moulding ◽  
Anode Support ◽  
Porous Anode

Ceramic injection moulding (CIM) has advantages for a cost effective fabrication of large-scale, near-net-shape products. In this work, CIM is carried out to prepare porous anode-support for solid oxide fuel cells (SOFC) applications. The CIM process started with a preparation of feedstocks by mixing powder with binder. The feedstock is then injected into the mould of desired shapes. The mouldings were subsequently undergo the removal of the binder (debinding) and, finally, sintering. It is shown that porous nickel oxide-yttria stabilized zirconia (NiO-YSZ) anode-support for SOFC were successfully prepared by CIM technique. In addition, a water-soluble based binder system, consisted mainly of polyethylene glycol (PEG), has been used in this work. This is to avoid the use of organic solvents when wax-based binder was used. Therefore, it can promote more environmentally friendly process. The removal of binder was carried out using water debinding technique. The porous anode for SOFC was subjected to systematic characterisation. The effect of processing parameters, such as powder characteristics and powder/binder ratio has been investigated. Rate of binder removal was also studied. The porous anode specimens were characterised for their properties and microstructure. It was also found that the porosity of the specimens can be controlled by adjusting the sintering temperatures and holding times.

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