Properties of pyrochlore ruthenate cathodes for intermediate temperature solid oxide fuel cells

Cited 41 time in webofscience Cited 0 time in scopus
  • Hit : 250
  • Download : 0
Powders of Bi2Ru2O7.3, Pb2Ru2O6.5, and Y2Ru2O7 were prepared and their reactivity with Ce0.9Gd0.1O1.95 (CGO) electrolyte powders examined. Bi2Ru2O7.3 and Pb2Ru2O6.5 reacted with CGO but Y2Ru2O7 appeared stable when heated in contact with CGO powder at 900C for 24 h. Symmetrical electrodes of Y2Ru2O7-x were deposited on CGO ceramic pellets, either by tape-casting or by electrostatic assisted chemical vapor deposition (EACVD) techniques, and cathode resistivities determined by impedance spectroscopy. Undoped Y2Ru2O7 electrodes exhibited very high area specific resistivities (ASR) at 627C (similar to 4000 Ohm cm(2)), but by doping with SrO the resistivity was reduced almost 100 x to 47 Ohm cm(2). The behavior of the Y2Ru2O7 cathodes was interpreted in terms of available oxygen ion transport data for the Gd2Ti2O7 series, and it was concluded that optimization of pyrochlore ruthenate compositions should be possible to improve further the oxygen reduction behavior of ruthenate cathodes for intermediate temperature solid oxide fuel cells.
Publisher
KLUWER ACADEMIC PUBL
Issue Date
1999-04
Language
English
Article Type
Article
Keywords

ELECTRODES; ZIRCONIA

Citation

JOURNAL OF ELECTROCERAMICS, v.3, no.1, pp.37 - 46

ISSN
1385-3449
DOI
10.1023/A:1009962831952
URI
http://hdl.handle.net/10203/76605
Appears in Collection
ME-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 41 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0