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@INPROCEEDINGS{Vibhu:1050580,
author = {Vibhu, Vaibhav and Kumar, Rishabh and Wolf, Stephanie and
Uecker, Jan and Unachukwu, Ifeanyichukwu Daniel and de
Haart, L. G. J. and Eichel, Rüdiger-A.},
title = {{D}evelopment of high-performing and durable fuel
electrodes for {S}olid {O}xide {E}lectrolysis {C}ells
({I}nvited)},
reportid = {FZJ-2026-00337},
year = {2025},
abstract = {The conventional Ni-yttria stabilized zirconia (YSZ) fuel
electrodeshows strong degradation in SOEC operation under
steam-containingfuels due to Ni migration and agglomeration.
As an alternative,Ni-gadolinium doped ceria (GDC) electrode
exhibit higherperformance than Ni-YSZ owing to the mixed
ionic and electronicconductivity of GDC under reducing
conditions, however it couldn’tprevent Ni-migration. To
overcome these issues, we have consideredperovskites-based
fuel electrodes, e.g. Sr2Fe2-xMox-yMyO6-δ (x=0.5, 1.0and M
= Ni), as they exhibit mixed ionic and electronic
conductingproperties and good redox stability under reducing
atmospheres.SFM based fuel electrode materials also show
higher electrochemicalperformances than Ni-YSZ electrode.
Moreover, we have also investigatedNi-free fuel electrode
materials and considered single-phaseceria-based materials
e.g. Ce0.8Gd0.2O1.9 and Ce1-xPrxO2-δ (0.0 ≤ x ≤
0.3).These ceria-based materials are mixed ionic and
electronic conductorsand exhibit high catalytic activity
under reducing atmospheres.For instance, the single cell
with the GDC fuel electrode has similarperformance as that
of the Ni-YSZ electrode but shows significantlylower
degradation rates under SOEC operation. The structural,
physicochemical,and electrochemical properties of newly
developed fuelelectrodes including long-term degradation
tests will be presented.},
month = {Feb},
date = {2025-02-25},
organization = {The American Ceramic Society 2025,
Conference on Electronic Materials and
Applications (EMA 2025), Denver (USA),
25 Feb 2025 - 28 Feb 2025},
subtyp = {Invited},
cin = {IET-1},
cid = {I:(DE-Juel1)IET-1-20110218},
pnm = {1231 - Electrochemistry for Hydrogen (POF4-123) / HITEC -
Helmholtz Interdisciplinary Doctoral Training in Energy and
Climate Research (HITEC) (HITEC-20170406)},
pid = {G:(DE-HGF)POF4-1231 / G:(DE-Juel1)HITEC-20170406},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/1050580},
}