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Method for fabrication of electrodes

United States Patent Application

20040166395
A1
View the Complete Application at the US Patent & Trademark Office
Described herein is a method to fabricate porous thin-film electrodes for fuel cells and fuel cell stacks. Furthermore, the method can be used for all fuel cell electrolyte materials which utilize a continuous electrolyte layer. An electrode layer is deposited on a porous host structure by flowing gas (for example, Argon) from the bottomside of the host structure while simultaneously depositing a conductive material onto the topside of the host structure. By controlling the gas flow rate through the pores, along with the process conditions and deposition rate of the thin-film electrode material, a film of a predetermined thickness can be formed. Once the porous electrode is formed, a continuous electrolyte thin-film is deposited, followed by a second porous electrode to complete the fuel cell structure.
Jankowski, Alan F. (Livermore, CA), Morse, Jeffrey D. (Martinez, CA), Barksdale, Randy (Livermore, CA)
The Regents of the University of California
10/ 783,230
February 19, 2004
[0002] The United States Government has rights in this invention pursuant to Contract No. W-7405-ENG-46 between the United States Department of Energy and the University of California for the operation of Lawrence Livermore National Laboratory.