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Thin film battery/fuel cell power generating system. Final report, Task E-4, April 1976-April 1978 [electronic resource].

Published
Pittsburgh, Pa. : Westinghouse Electric Corporation, 1978.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 228 : digital, PDF file
Additional Creators
Westinghouse Electric Corporation and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
A two-year researth program to design and demonstrate the technical feasibility of a high-temperature solid-electrolyte fuel cell is described in detail. A rare-earth chromite, in particular, La /sub 95/Mg /sub 05/Cr /sub 75/Al /sub 25/0/sub 3/ was identified, synthesized by RF-sputtering tested for resistivity, thermal expansion and inertness in contact with yttria-stabilized zirconia, and was found promising as a candidate interconnection material. Films of these interconnection materials have been successfully deposited onto stabilized zirconia tubes by electrochemical vapor deposition (EVD) and the technique has been used to fabricate such films in building fuel cell stacks. Tin-doped indium oxide and antimony-doped tin oxide air electrode current collector materials have been successfully (CVD) chemically vapor deposited, as thin films, onto zirconia tubes. Fabrication procedures for the preparation of thin films of the nickel-cermet fuel electrode and yttria-stabilized zirconia solid electrolyte have been re-verified and improved for use in preparing unit cells and cell stacks on the program. An in-house extrusion technology for porous calcia-stabilized zirconia tubes has been developed and has been used to provide suitable support tubes for component combination samples, unit cell and cell stack sample preparation. Test concepts for component combinations and for unit cells and cell stacks have been evolved, particularly, the crossed electrode technique, and test equipment has been designed, built and used to evaluate fuel cell components and their interfaces. A five-cell fuel cell stack has been fabricated and operated for 700 hours at 200 mA/cm/sup 2/ at 950 to 980/sup 0/C and was subjected to three temperature cycles during the testing. Three series connected cells of this five cell stack met the 80% voltage efficiency final target objective of the program (less than 10% voltage degradation in 700 hours - with only 300 hours required.)
Report Numbers
E 1.99:cons-1197-9
cons-1197-9
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
03/31/1978.
"cons-1197-9"
Feduska, W.
Funding Information
EY-76-C-03-1197
View MARC record | catkey: 14068772