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@ARTICLE{Schober:32012,
author = {Schober, T.},
title = {{O}n the use of {P}d filters on proton conducting {SOFC}
ceramics},
journal = {Ionics},
volume = {9},
issn = {0947-7047},
address = {Berlin},
publisher = {Springer},
reportid = {PreJuSER-32012},
pages = {297},
year = {2003},
note = {Record converted from VDB: 12.11.2012},
abstract = {Ceramic proton conductors are materials which conduct
protons under an applied electric field and permit the
construction of a SOFC in analogy to the oxygen ion
conductor 8YSZ. Such protonic ceramic fuel cells have been
labelled PCFCs to distinguish them from the standard SOFCs.
PCFCs have several advantages when compared with standard
SOFCs. First, there is no water contamination of the fuel
gas. Second, the protonic conductivity may be higher in the
intermediate temperature range (550 to 700 degreesC). Also,
the activation energy for proton migration is much lower
than that of oxygen ion conduction. In addition, internal
reforming is also possible permitting the use of natural
gas.An intriguing possibility is the use of palladium
filters on the fuel side which only permit the diffusion of
protons to the filter-electrolyte interface. This may reduce
undesirable mixing of the fuel and the oxygen on either side
of the electrolyte. In this work, it is shown that the entry
of protons from the Pd into the ceramic conductor is
straightforward. Prototype test PCFCs are shown to operate
as required. To test the Pd - ceramic proton conductor
system a study was undertaken using Pd tubes which were
coated with thin layers of the proton conducting ceramics.
When flushing the tube insides with hydrogen and exposing
the outsides to air, Nernst voltages of such electrochemical
cells could be recorded as a function of temperature. The
present rather preliminary work, however, was hampered by
leakage of the thin film HTPC's. Thus, the theoretical
Nernst voltages were not attained.},
keywords = {J (WoSType)},
cin = {IFF-EKM},
ddc = {530},
cid = {I:(DE-Juel1)VDB35},
pnm = {Kondensierte Materie},
pid = {G:(DE-Juel1)FUEK242},
shelfmark = {Chemistry, Physical / Electrochemistry / Physics, Condensed
Matter},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000187528200023},
doi = {10.1007/BF02375983},
url = {https://juser.fz-juelich.de/record/32012},
}