Effect of Thermal Treatment on Chemical Interaction Between Yttrium Borosilicate Glass Sealants and YSZ for Planar Solid Oxide Fuel Cells

2014 ◽  
Vol 5 (4) ◽  
pp. 410-420 ◽  
Author(s):  
Vishal Kumar ◽  
Gurbinder Kaur ◽  
Om P. Pandey ◽  
Kulvir Singh ◽  
Kathy Lu
Keyword(s):  
Fuel Cells ◽  
Thermal Treatment ◽  
Solid Oxide Fuel Cells ◽  
Borosilicate Glass ◽  
Chemical Interaction ◽  
Solid Oxide ◽  
Oxide Fuel

scholarly journals PrBaCo2O6−δ-Ce0.8Sm0.2O1.9 Composite Cathodes for Intermediate-Temperature Solid Oxide Fuel Cells: Stability and Cation Interdiffusion

Energies ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 417 ◽  
Author(s):  
Dmitry Tsvetkov ◽  
Nadezhda Tsvetkova ◽  
Ivan Ivanov ◽  
Dmitry Malyshkin ◽  
Vladimir Sereda ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Cathode Material ◽  
Chemical Interaction ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Oxide Fuel ◽  
Composite Cathodes ◽  
Cation Interdiffusion

The single-phase oxide PrBaCo2O6−δ and composites (100 − y)PrBaCo2O6−δ-yCe0.8Sm0.2O1.9 (y = 10–30 wt.%) were investigated as cathode materials for intermediate-temperature solid oxide fuel cells. The chemical compatibility, cation interdiffusion, thermal expansion and dc conductivity were studied. As a result, strong interdiffusion of Pr and Sm was found between PrBaCo2O6−δ and Ce0.8Sm0.2O1.9. This leads to only insignificantly decreasing thermal expansion coefficient of composite with increasing fraction of Ce0.8Sm0.2O1.9 and, thus, mixing PrBaCo2O6−δ with Ce0.8Sm0.2O1.9 does not improve thermal expansion behavior of the cathode material. Moreover, formation of poorly-conducting BaCeO3, caused by chemical interaction between the double perovskite and doped ceria, was shown to lead to pronounced drop in the electrical conductivity of the composite cathode material with increasing Ce0.8Sm0.2O1.9 content.

Influence of Thermal Treatment During Cell Manufacturing on the Performance of Tape Cast Solid Oxide Fuel Cells

2019 ◽  
Vol 25 (2) ◽  
pp. 649-654 ◽  
Author(s):  
Wolfgang Schafbauer ◽  
Norbert H. Menzler ◽  
Hans Peter Buchkremer
Keyword(s):  
Fuel Cells ◽  
Thermal Treatment ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Cell Manufacturing ◽  
Tape Cast

Ceramic modules for micro solid-oxide fuel cells

2011 ◽  
Vol 2011 (CICMT) ◽  
pp. 000009-000016
Author(s):  
Thomas Maeder ◽  
Bo Jiang ◽  
Yan Yan ◽  
Peter Ryser ◽  
Paul Muralt
Keyword(s):  
Fuel Cells ◽  
Low Temperature ◽  
Solid Oxide Fuel Cells ◽  
Borosilicate Glass ◽  
High Energy ◽  
Solid Oxide ◽  
Processing Unit ◽  
Oxide Fuel ◽  
Promising Alternative ◽  
Very High Energy

Micro solid-oxide fuel cells (μ -SOFCs) based on microfabrication processes are a promising alternative to batteries for supplying portable electronics, as very high energy densities may be achieved. However, a complete μ -SOFC module is a quite intricate structure, comprising 1) a gas-processing unit (GPU) to process a convenient energy source such as lighter gas into a more usable form, 2) the energy-generating cells proper, and 3) a post-combustor. The mechanical integration of these elements and their fluidic and electrical interconnection into a single module is a very challenging task for micro-scale integration. Therefore, a modular low-temperature co-fired ceramic (LTCC) package is proposed, allowing individual testing and subsequent full integration of the different cell elements. The package functions as a hotplate, a mechanical support for the hot zone and as an electrical / fluidic interconnect, applying a slender-bridge design to minimise thermal conduction losses and stresses, thus allowing convenient low-temperature electrical connections and fluidic ports. For applications requiring a better thermal expansion match to silicon and borosilicate glass, a silicon / borosilicate glass-sealed variant was also developed. Preliminary thermal characterisation of these packages is shown, and concepts for integrating the GPU and post-combustor into the LTCC structure are presented.

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