scholarly journals Mechanical Behavior of Yttria-Stabilized Zirconia Aqueous Cast Tapes and Laminates

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
V. Moreno ◽  
R. M. Bernardino ◽  
D. Hotza
Keyword(s):  
Tensile Strength ◽  
Tape Casting ◽  
Property Values ◽  
Solid Oxide ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Acrylic Emulsion ◽  
Homogeneous Surface ◽  
Rheological Measurements ◽  
Zirconia Films

Aqueous tape casting was used to produce yttria-stabilized zirconia films for electrolyte-supported solid oxide fuel cell (SOFC). Tape casting slurries were prepared varying the binder content between 20 and 25 wt%. A commercial acrylic emulsion served as binder. Rheological measurements of the two slurries were performed. Both slurries showed a shear-thinning behavior. Tapes with 25 wt% binder exhibited adequate flexibility and a smooth and homogeneous surface, free of cracks and other defects. Suitable conditions of lamination were found and a theoretical density of 54% in the laminates was achieved. Laminated tapes showed higher tensile strength compared to single sheets. Tape orientation has a significant influence on the mechanical properties. Tensile strength, elongation to strain, and Young’s modulus measured in samples produced in the direction of casting showed higher property values.

Dip-coating thin yttria-stabilized zirconia films for solid oxide fuel cell applications

2004 ◽  
Vol 30 (6) ◽  
pp. 1049-1053 ◽  
Author(s):  
Yonglian Zhang ◽  
Jianfeng Gao ◽  
Dingkun Peng ◽  
Meng Guangyao ◽  
Xingqin Liu
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Dip Coating ◽  
Solid Oxide ◽  
Yttria Stabilized Zirconia ◽  
Oxide Fuel ◽  
Stabilized Zirconia ◽  
Zirconia Films

Fabrication and Performance of La0.6Sr0.4Co0.2Fe0.8O3−δ Infiltrated-Yttria-Stabilized Zirconia Cathode on Anode-Supported Solid Oxide Fuel Cell

2015 ◽  
Vol 12 (1) ◽  
Author(s):  
Dan Tang ◽  
Min-Fang Han ◽  
Zi-Wei Zheng
Keyword(s):  
Tape Casting ◽  
Casting Process ◽  
Solid Oxide ◽  
Yttria Stabilized Zirconia ◽  
Constant Voltage ◽  
Stabilized Zirconia ◽  
Three Phase ◽  
And Performance ◽  
The Stability ◽  
Operating Stage

The three layers with porous yttria-stabilized zirconia (YSZ) backbone/dense YSZ/porous NiO–YSZ were fabricated by tape-casting process, respectively, then laminated together and co-fired at 1300 °C for 5 h. The cathode material La0.6Sr0.4Co0.2Fe0.8O3−δ (LSCF) was loaded by infiltrating the precursor of metal ions into porous YSZ backbone. As a result, LSCF nanoparticles with the size of 60–100 nm were uniformly distributed on YSZ backbone. The power density was 1.046 W cm−2 and the polarization resistance was 0.17 Ω cm2 at 800 °C in humidified H2 (3 vol.% H2O). But the stability was not good enough, especially in early operating stage, e.g., 20 h. After that, it showed good stability for the following 70 h operating under a constant voltage of 0.7 V at 750 °C. This is due to the growth and agglomeration of LSCF nanoparticles at early steps, which reduced the three phase boundaries (TPBs).

Solid Oxide Fuel Cell PEN Structures Fabricated by Tape Casting and Co-Firing Technologies

2007 ◽  
Vol 280-283 ◽  
pp. 759-762
Author(s):  
He Ping Zhou ◽  
Zhi Hui Liu
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Tape Casting ◽  
Sem Analysis ◽  
Solid Oxide ◽  
Yttria Stabilized Zirconia ◽  
Oxide Fuel ◽  
Stabilized Zirconia ◽  
Electrolyte Film ◽  
Ysz Electrolyte

Solid oxide fuel cell positive-electrolyte-negative (SOFC PEN) structures were fabricated by complex tape casting and co-firing technologies. La0.8Sr0.2FeO3 (LSF20) powders for cathode and 8 mol% yttria-stabilized zirconia (YSZ) powders for electrolyte were synthesized through glycine-nitrate process (GNP). The slurries for cathode, electrolyte and anode (NiO-YSZ) were cast in sequence to form green PEN structures. Co-fired at 1200oC for 6 h, there were no delamination, crack or curl occurred in PEN structures. SEM analysis showed that YSZ electrolyte film had been sintered to full dense and the interface combinations were compact. No evident reaction product between YSZ and LSF20 was detected by XRD.

Fabrication and evaluation of solid-oxide fuel cell anodes employing reaction-sintered yttria-stabilized zirconia

2009 ◽  
Vol 193 (2) ◽  
pp. 706-712 ◽  
Author(s):  
Daniel Storjohann ◽  
James Daggett ◽  
Neal P. Sullivan ◽  
Huayang Zhu ◽  
Robert J. Kee ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Solid Oxide ◽  
Yttria Stabilized Zirconia ◽  
Oxide Fuel ◽  
Stabilized Zirconia ◽  
Fuel Cell Anodes

Compatibility Issues of Yttria-Stabilized Zirconia Solid Oxide Membrane in the Direct Electro-Deoxidation of Metal Oxides

2014 ◽  
Vol 98 (3) ◽  
pp. 972-981 ◽  
Author(s):  
Abhishek Mukherjee ◽  
Nicolo’ Campagnol ◽  
Joris Van Dyck ◽  
Jan Fransaer ◽  
Bart Blanpain
Keyword(s):  
Metal Oxides ◽  
Solid Oxide ◽  
Yttria Stabilized Zirconia ◽  
Solid Oxide Membrane ◽  
Stabilized Zirconia ◽  
Oxide Membrane
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