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@ARTICLE{Engels:837636,
author = {Engels, J. and Griesche, D. and Waser, R. and Schneller,
T.},
title = {{T}hin film proton conducting membranes for micro-solid
oxide fuel cells by chemical solution deposition},
journal = {Thin solid films},
volume = {636},
issn = {0040-6090},
address = {Amsterdam [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2017-06515},
pages = {446 - 457},
year = {2017},
abstract = {Micro solid oxide fuel cells (μ-SOFC) were manufactured
with perovskite type proton conductors on silicon substrates
and with structured Pt-grid electrodes. In order to
miniaturize the μ-SOFCs and to shorten the ion path through
the electrolyte, the thin film proton conductors were only ~
510 nm thick. The thin films consist of 10 $mol\%$
yttrium-doped BaZrO3 (BZY10) and they were deposited by
means of chemical solution deposition (CSD). CSD was
applied, because it represents a highly attractive
fabrication method, considering the relatively low
investment costs and flexibility with regard to
stoichiometry. The backsides of the μ-SOFCs on the
substrates were opened by wet chemical and plasma etching to
form the freestanding membranes. The completed μ-SOFCs
resist up to a temperature of 450 °C. Their electrical
properties, such as permittivity, and resistivity were
investigated. By means of electrochemical impedance
spectroscopy (EIS) in the temperature range of 100 °C to
450 °C, the resistivity properties and the activation
energies of the model μ-SOFC were studied with humid
hydrogen in nitrogen at the anode and different oxygen
partial pressures at the cathode. The results provide a
clear hint for a dominating protonic defect transport
mechanism in the electrolyte. In the 450 °C measurement,
the model μ-SOFCs reached an open circuit voltage of 600 mV
with $100\%$ oxygen at the cathode and humid hydrogen in
nitrogen at the anode.},
cin = {PGI-7 / JARA-FIT / IEK-4},
ddc = {070},
cid = {I:(DE-Juel1)PGI-7-20110106 / $I:(DE-82)080009_20140620$ /
I:(DE-Juel1)IEK-4-20101013},
pnm = {524 - Controlling Collective States (POF3-524) / HITEC -
Helmholtz Interdisciplinary Doctoral Training in Energy and
Climate Research (HITEC) (HITEC-20170406)},
pid = {G:(DE-HGF)POF3-524 / G:(DE-Juel1)HITEC-20170406},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000408037800064},
doi = {10.1016/j.tsf.2017.06.038},
url = {https://juser.fz-juelich.de/record/837636},
}