Method of Fabrication of High Power Density Solid Oxide Fuel Cells

Patent · 09 September 2008

OSTI ID:953666

Pham, Ai Quoc ^[1]; Glass, Robert S ^[2]

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1. San Jose, CA
2. Livermore, CA

A method for producing ultra-high power density solid oxide fuel cells (SOFCs). The method involves the formation of a multilayer structure cells wherein a buffer layer of doped-ceria is deposited intermediate a zirconia electrolyte and a cobalt iron based electrode using a colloidal spray deposition (CSD) technique. For example, a cobalt iron based cathode composed of (La,Sr)(Co,Fe)O(LSCF) may be deposited on a zirconia electrolyte via a buffer layer of doped-ceria deposited by the CSD technique. The thus formed SOFC have a power density of 1400 mW/cm.sup.2 at 600.degree. C. and 900 mW/cm.sup.2 at 700.degree. C. which constitutes a 2-3 times increased in power density over conventionally produced SOFCs.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• Sponsoring Organization: United States Department of Energy
• DOE Contract Number: W-7405-ENG-48
• Assignee: Lawrence Livermore National Security, LLC (Livermore, CA)
• Patent Number(s): 7,422,766
• Application Number: 10/894,900
• OSTI ID: 953666
• Country of Publication: United States
• Language: English