Gd0.2Ce0.8O2 Diffusion Barrier Layer between (La0.58Sr0.4)(Co0.2Fe0.8)O3−δ Cathode and Y0.16Zr0.84O2 Electrolyte for Solid Oxide Fuel Cells: Effect of Barrier Layer Sintering Temperature on Microstructure

2018 ◽  
Vol 1 (12) ◽  
pp. 6790-6800 ◽  
Author(s):  
Virginia Wilde ◽  
Heike Störmer ◽  
Julian Szász ◽  
Florian Wankmüller ◽  
Ellen Ivers-Tiffée ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Barrier Layer ◽  
Diffusion Barrier ◽  
Sintering Temperature ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Diffusion Barrier Layer

Anode Side Diffusion Barrier Coating for Solid Oxide Fuel Cells Interconnects

2010 ◽  
Vol 7 (3) ◽  
Author(s):  
J. Froitzheim ◽  
L. Niewolak ◽  
M. Brandner ◽  
L. Singheiser ◽  
W. J. Quadakkers
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Barrier Layer ◽  
Diffusion Barrier ◽  
Ferritic Steel ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Anode Side ◽  
Diffusion Barrier Layer

During the operation of solid oxide fuel cells (SOFCs) the Ni base anode and/or Ni-mesh is in direct contact with the ferritic steel interconnect or the metallic substrate. For assuring long-term stack operation a diffusion barrier layer with high electronic conductivity may be needed to impede interdiffusion between the various components. A pre-oxidation layer on the ferritic steel turned out to be not viable as a barrier layer since a Ni-layer tends to dissociate the oxide scale. Therefore the potential of ceria as a diffusion barrier layer for the anode side of the SOFC was estimated. The barrier properties of a ceria coating between the Ni and the ferritic steel Crofer 22 APU were tested for 1000 h in Ar–4H2–2H2O at 800°C. Conductivity experiments were performed in the same atmosphere at different temperatures. After long-term exposures no indication of interdiffusion between Ni and ferritic steel could be detected, however, sputtered coatings on ferritic steel substrates showed significantly lower conductivities than bulk ceria samples because of void formation between the ceria and the oxide on the steel surface. The latter could be prevented by an intermediate copper layer, which resulted in overall area specific resistance values lower than 20 mΩ cm2 after 100 h exposure at 800°C.

Effect of sintering temperature on surface morphology and electrical properties of samarium-doped ceria carbonate for solid oxide fuel cells

2015 ◽  
Vol 41 (1) ◽  
pp. 1323-1332 ◽  
Author(s):  
S.A. Muhammed Ali ◽  
Ros Emilia Rosli ◽  
Andanastuti Muchtar ◽  
Abu Bakar Sulong ◽  
Mahendra Rao Somalu ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Electrical Properties ◽  
Surface Morphology ◽  
Solid Oxide Fuel Cells ◽  
Sintering Temperature ◽  
Solid Oxide ◽  
Doped Ceria ◽  
Oxide Fuel

Nanostructured Double Perovskite Cathode With Low Sintering Temperature For Intermediate Temperature Solid Oxide Fuel Cells

ChemSusChem ◽  
2015 ◽  
Vol 8 (18) ◽  
pp. 3153-3158 ◽  
Author(s):  
Seona Kim ◽  
Areum Jun ◽  
Ohhun Kwon ◽  
Junyoung Kim ◽  
Seonyoung Yoo ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Sintering Temperature ◽  
Double Perovskite ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Oxide Fuel ◽  
Low Sintering Temperature
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