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@ARTICLE{Hilger:1055036,
author = {Hilger, Martin and Krogsgaard, Thorbjørn and
Groß-Barsnick, Sonja-Michaela and Sebold, Doris and
Shrikanth, S. and Froitzheim, Jan and Lenser, Christian and
Menzler, Norbert H.},
title = {{E}lectrophoretic {D}eposition of {P}rotective {S}pinel
{C}oatings for {S}olid {O}xide {C}ell {I}nterconnects –
{T}owards {S}tack {I}ntegration},
journal = {Journal of the Electrochemical Society},
volume = {173},
number = {3},
issn = {0013-4651},
address = {Bristol},
publisher = {IOP Publishing},
reportid = {FZJ-2026-01833},
pages = {034509},
year = {2026},
abstract = {We evaluated electrophoretic deposition (EPD) of spinel
coatings for solid oxide cell (SOC) interconnects with a
focus on stack integration. Two compositions, MnCo1.9Fe0.1O4
(MCF) and CuMn1.8Ni0.2O4 (CMN), were deposited from
water/ethanol suspensions and subjected to three thermal
routes: direct oxidation and two-step treatments with
reduction in Ar/H2 at 900 or 1000 °C followed by oxidation.
Structural evolution, chromium evaporation, mass gain, and
ex situ area-specific resistance (ASR) were assessed.
Sealant compatibility with a Ca-Ba-silicate glass and
applicability to representative flow-field geometries were
investigated. All coatings formed continuous layers;
two-step treatments enhanced densification compared to
direct oxidation. Prereduction of MCF layers at 1000 °C
yielded the lowest Cr evaporation and mass gain, whereas CMN
exhibited chromium ingress, phase variations, and coarsened
microstructures. ASR values for all types remained around or
below 20 mΩ cm2. Glass-joining produced dense composites;
limited cation diffusion was observed for MCF, while CMN
showed substantial Cu penetration into the glass. EPD
produced uniform, defect-free coatings on complex flow-field
structures, with only slight thickness variations across the
profile. These results support MCF-EPD with a 1000 °C
reduction step and in situ oxidation during stack assembly
as a process-compatible route for protective interconnect
coatings in high-temperature SOCs, while CMN remains of
particular interest for intermediate-temperature
applications.},
organization = {19th International Symposium on Solid
Oxide Fuel Cells, Stockholm (Sweden)},
cin = {IMD-2 / ITE},
ddc = {660},
cid = {I:(DE-Juel1)IMD-2-20101013 / I:(DE-Juel1)ITE-20250108},
pnm = {1231 - Electrochemistry for Hydrogen (POF4-123) / NOUVEAU -
NOVEL ELECTRODE COATINGS AND INTERCONNECT FOR SUSTAINABLE
AND REUSABLE SOEC (101058784) / SOFC - Solid Oxide Fuel Cell
(SOFC-20140602)},
pid = {G:(DE-HGF)POF4-1231 / G:(EU-Grant)101058784 /
G:(DE-Juel1)SOFC-20140602},
typ = {PUB:(DE-HGF)8 / PUB:(DE-HGF)16},
doi = {10.1149/1945-7111/ae3ebb},
url = {https://juser.fz-juelich.de/record/1055036},
}