Effect of Screen-Printing Mesh Opening Diameter on Microstructural and Electrical Properties of La0.6Sr0.4Co0.2Fe0.8O_class="a

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• 作者：Atul P. Jamale ; C.H. Bhosale ; L.D. Jadhav
• 关键词：Thick film ; screen printing ; microstructure ; electrical conductivity
• 刊名：Journal of Electronic Materials
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：45
• 期：1
• 页码：509-514
• 全文大小：1,278 KB
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• 作者单位：Atul P. Jamale (1)
  C.H. Bhosale (1)
  L.D. Jadhav (2)
  
  1. Department of Physics, Shivaji University, Kolhapur, Maharashtra, 416004, India
  2. Electrochemical Energy Materials Laboratory, Department of Physics, Rajaram College, Kolhapur, Maharashtra, 416004, India
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Optical and Electronic Materials
  Characterization and Evaluation Materials
  Electronics, Microelectronics and Instrumentation
  Solid State Physics and Spectroscopy
  
• 出版者：Springer Boston
• ISSN：1543-186X

文摘

The performance of solid oxide fuel cells (SOFCs) is hampered by the large polarization and ohmic losses across the cathode–electrolyte interface. To minimize these losses, in most SOFCs the cathode is obtained by thick-film deposition techniques. Since the properties of such films depend upon the starting materials and screen-printing parameters, the effect of the mesh opening diameter on the physiochemical properties of cathodes for intermediate-temperature (IT)-SOFCs has been studied. Combustion-synthesized La_0.6Sr_0.4Co_0.2Fe_0.8O_{3−class="EmphasisTypeItalic ">δ} powder with specific surface area of 11.64 m2 g−1 was utilized in film formation. All films were porous in nature, and the thickness was observed to increase with the mesh opening diameter. The electrical conductivity showed a decreasing trend with film thickness. Typically, film with 7 μm thickness showed moderate conductivity of 16.4 S cm−1 with E _a = 0.1 eV.