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@ARTICLE{Leonard:852736,
author = {Leonard, Kwati and Okuyama, Yuji and Takamura, Yasuhiro and
Lee, Young-Sung and Miyazaki, Kuninori and Ivanova, Mariya
and Meulenberg, Wilhelm Albert and Matsumoto, Hiroshige},
title = {{E}fficient intermediate-temperature steam electrolysis
with {Y} : {S}r{Z}r{O} 3 –{S}r{C}e{O} 3 and
{Y} : {B}a{Z}r{O} 3 –{B}a{C}e{O} 3 proton conducting
perovskites},
journal = {Journal of materials chemistry / A},
volume = {6},
issn = {2050-7496},
address = {London [u.a.]},
publisher = {RSC},
reportid = {FZJ-2018-05608},
pages = {19113-19124},
year = {2018},
abstract = {Ceramic proton conductors have the potential to become
important components in future clean and efficient energy
technologies. In this manuscript, barium cerium yttrium
zirconate (Ba(Zr0.5Ce0.4)8/9Y0.2O2.9) and strontium cerium
yttrium zirconate (SrZr0.5Ce0.4Y0.1O2.95), proton conducting
perovskites were employed as solid oxide electrolysis cell
(SOEC) electrolytes for hydrogen production via intermediate
temperature steam electrolysis at 550 and 600 °C.
Cathode-supported button cells examined for a 12 μm
Ba(Zr0.5Ce0.4)8/9Y0.2O2.9 electrolyte, with
Ni–SrZr0.5Ce0.4Y0.1O2.95 as the H2-electrode, and porous
Ba0.5La0.5CoO3 as the anode reached current densities of 0.2
and 0.5 A cm−2 with applied voltage of 1.45 V, at 550 and
600 °C, respectively. Moreover, a hydrogen evolution rate
of 127 μmol cm−2 per minute was achieved at 0.5 A cm−2,
translating to a current efficiency of $82\%.$ In addition,
excellent cell performance was obtained using
SrZr0.5Ce0.4Y0.1O2.95 as an electrolyte. Current densities
of 0.2 and 0.5 A cm−2 were obtained at 600 °C with
applied voltages of 1.28 and 1.63 V, achieving faradaic
current efficiencies of 88 and $85\%.$ The
NiO–SrZr0.5Ce0.4Y0.1O3−δ composite cathode was more
favorable for the densification of the supported
Ba(Zr0.5Ce0.4)8/9Y0.2O2.9 electrolyte during sintering and
could be promising for use as a cathode substrate in
proton-conducting SOECs.},
cin = {IEK-1},
ddc = {540},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000448412000040},
doi = {10.1039/C8TA04019B},
url = {https://juser.fz-juelich.de/record/852736},
}