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@INPROCEEDINGS{Leonard:1015295,
author = {Leonard, Kwati and Ivanova, Mariya and Dellen, Christian
and Meulenberg, Wilhelm Albert and Ishihara, Tatsumi and
Matsumoto, Hiroshige},
title = {{P}rocessing and characterization of multi-layer ceramic
protonic cells for large scale hydrogen production},
reportid = {FZJ-2023-03641},
year = {2023},
abstract = {Proton-conducting solid oxide electrolytes are highly
appealing for producing hydrogen on a large scale through
steam electrolysis at moderate temperatures. Yet, processing
such electrolytes for industrial purposes poses several
challenges. This paper presents an economical tape-casting
route that produces flat, planar protonic electrolysis cells
with impressive dimensions of up to 100mm x 100mm x 0.5mm.
These cells are constructed using NiO-SrZr0.5Ce0.4Y0.1O3-d
as the substrate, which ensures minimal warping and no
cracks in the end-fired state.The three-layered green
tapes achieved dense, gas-tight electrolyte layers after
co-sintering at 1300 ºC for 5 hours. Using Ba0.5La0.5CoO3-d
as the anode electrode demonstrates remarkable capabilities
and endurance within the 500-600 °C temperature range, as
indicated by its current-voltage characteristics and
hydrogen evolution rates. Furthermore, based on Raman
spectra analysis and mappings of the half-cell surface and
cross-section (as illustrated in Figure 1), it is apparent
that sintering at temperatures above 1350 °C leads to the
emergence of fresh crystal defects that alter the perovskite
host lattice. These issues together with polarization
processes that impact performance in the fuel cell mode
identified through impedance spectra analysis of will be
presented. Acknowledgment: The authors gratefully
acknowledge financial support through JSPS KAKENHI
Grant-in-Aid for Scientific Research (C), No. 19K05672, NEDO
(International collaboration) JPNP20005, JSPS Core-to-Core
(Solid Oxide Interfaces for Faster Ion Transport) and
WPI-I2CNER sponsored by the World Premier International
Research Center Initiative (WPI), MEXT, Japan.References:
[1] Kwati, L. Wendelin, D.; Ivanova, M.; Meulenberg, W.;
Ishihara, T.; Matsumoto, H. Processing Ceramic Proton
Conductor Membranes for Use in Steam Electrolysis.
Membranes, 10(11) p339 (2020) .},
month = {Sep},
date = {2023-09-17},
organization = {21st International Conference on
Solid-State Protonic Conductors,
Fukuoka (Japan), 17 Sep 2023 - 22 Sep
2023},
subtyp = {After Call},
cin = {IEK-1},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {1231 - Electrochemistry for Hydrogen (POF4-123) / SOFC -
Solid Oxide Fuel Cell (SOFC-20140602)},
pid = {G:(DE-HGF)POF4-1231 / G:(DE-Juel1)SOFC-20140602},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/1015295},
}