Fabrication of dense and defect-free diffusion barrier layer via constrained sintering for solid oxide fuel cells

2017 ◽  
Vol 37 (9) ◽  
pp. 3219-3223 ◽  
Author(s):  
Sung-Il Lee ◽  
Mansoo Park ◽  
Jongsup Hong ◽  
Hyoungchul Kim ◽  
Ji-Won Son ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Barrier Layer ◽  
Diffusion Barrier ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Free Diffusion ◽  
Diffusion Barrier Layer ◽  
Constrained Sintering

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.

scholarly journals Constrained Sintering in Fabrication of Solid Oxide Fuel Cells

Materials ◽  
2016 ◽  
Vol 9 (8) ◽  
pp. 675 ◽  
Author(s):  
Hae-Weon Lee ◽  
Mansoo Park ◽  
Jongsup Hong ◽  
Hyoungchul Kim ◽  
Kyung Yoon ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Constrained Sintering

scholarly journals Smart utilization of cobaltite-based double perovskite cathodes on barrier-layer-free zirconia electrolyte of solid oxide fuel cells

2016 ◽  
Vol 4 (48) ◽  
pp. 19019-19025 ◽  
Author(s):  
Meng Li ◽  
Kongfa Chen ◽  
Bin Hua ◽  
Jing-li Luo ◽  
William D. A. Rickard ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Barrier Layer ◽  
Double Perovskite ◽  
Direct Application ◽  
Solid Oxide ◽  
Double Perovskites ◽  
Oxide Fuel ◽  
Electrochemical Polarization ◽  
Zirconia Electrolyte

Cathode/electrolyte interface could be formed by electrochemical polarization, offering new opportunities for direct application of double perovskites to YSZ-based SOFCs.

scholarly journals Highly Stable Sr-Free Cobaltite-Based Perovskite Cathodes Directly Assembled on a Barrier-Layer-Free Y2O3-ZrO2Electrolyte of Solid Oxide Fuel Cells

ChemSusChem ◽  
2017 ◽  
Vol 10 (5) ◽  
pp. 993-1003 ◽  
Author(s):  
Na Ai ◽  
Na Li ◽  
William D. A. Rickard ◽  
Yi Cheng ◽  
Kongfa Chen ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Barrier Layer ◽  
Solid Oxide ◽  
Oxide Fuel

scholarly journals Powder Packing Behavior and Constrained Sintering in Powder Processing of Solid Oxide Fuel Cells (SOFCs)

2019 ◽  
Vol 56 (2) ◽  
pp. 130-145 ◽  
Author(s):  
Hae-Weon Lee ◽  
Ho-Il Ji ◽  
Jong-Ho Lee ◽  
Byung-Kook Kim ◽  
Kyung Joong Yoon ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Powder Processing ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Powder Packing ◽  
Constrained Sintering

Enhanced Performance of Gadolinia-Doped Ceria Diffusion Barrier Layers Fabricated by Pulsed Laser Deposition for Large-Area Solid Oxide Fuel Cells

2018 ◽  
Vol 1 (5) ◽  
pp. 1955-1964 ◽  
Author(s):  
Miguel Morales ◽  
Arianna Pesce ◽  
Aneta Slodczyk ◽  
Marc Torrell ◽  
Paolo Piccardo ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Diffusion Barrier ◽  
Pulsed Laser ◽  
Solid Oxide ◽  
Laser Deposition ◽  
Doped Ceria ◽  
Oxide Fuel ◽  
Large Area ◽  
Barrier Layers
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