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 ◽  
...  
2007 ◽  
Vol 539-543 ◽  
pp. 1344-1349
Author(s):  
Dong Fang Yang

Samarium doped ceria exhibits relative high conductivity of 0.1 S/cm at 700 °C and has been considered to be an attractive electrolyte for solid oxide fuel cells operating at the temperature range between 500 to 600 °C. Although the material exhibits better chemical and structural compatibility with electrodes as well as higher ionic conductivity than Yttria-stabilized Zirconia, the reduction of Ce4+ to Ce3+ induces n-type electronic conduction which tends to decrease power output of solid oxide fuel cells. The problem can be eliminated by using a barrier of thin Zr0.9Sc0.1O2 layer deposited over SDC layer as an alternative electrolyte to improve the stability of Samarium doped ceria under reducing atmosphere. In this work, we will report the results on the development of the Pulsed Laser Deposition (PLD) process to fabricate Sm0.2Ce0.8O1.9/Zr0.9Sc0.1O2 bilayer films. Bilayer films with controlled microstructures, density, and interfacial properties were successfully grown by the PLD at various deposition temperatures on Si(100) substartes. X-ray diffraction was used to determine their crystal structures, while the cross section images of the film-film and film-substrate interfaces were examined by field-emission SEM. The film density was calculated from the index of reflection data determined by a fiber-optic spectrophotometer.


2012 ◽  
Vol 45 (1) ◽  
pp. 333-336 ◽  
Author(s):  
A. Evans ◽  
S. Karalic ◽  
J. Martynczuk ◽  
M. Prestat ◽  
R. Tolke ◽  
...  

CIRP Annals ◽  
2013 ◽  
Vol 62 (1) ◽  
pp. 563-566 ◽  
Author(s):  
Joonho Park ◽  
Jun Yeol Paek ◽  
Ikwhang Chang ◽  
Sanghoon Ji ◽  
Suk Won Cha ◽  
...  

2011 ◽  
Vol 196 (22) ◽  
pp. 9459-9466 ◽  
Author(s):  
Trine Klemensø ◽  
Jimmi Nielsen ◽  
Peter Blennow ◽  
Åsa H. Persson ◽  
Tobias Stegk ◽  
...  

2017 ◽  
Vol 313 ◽  
pp. 168-176 ◽  
Author(s):  
Dagmara Szymczewska ◽  
Aleksander Chrzan ◽  
Jakub Karczewski ◽  
Sebastian Molin ◽  
Piotr Jasinski

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