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@INPROCEEDINGS{Tokariev:155754,
author = {Tokariev, O. and Berger, Cornelius and Orzessek, P. and
Fang, Q. and Menzler, N. H. and Buchkremer, H. P.},
title = {{STUDY} {OF} {STORAGE} {MATERIAL} {FOR} {A}
{HIGH}-{TEMPERATURE} {RECHARGEABLE} {OXIDE} {BATTERY}
({ROB})},
reportid = {FZJ-2014-04761},
year = {2014},
abstract = {This work focuses on the fundamental research of porous
storage materials for a novel high temperature rechargeable
oxide battery (ROB). In the battery, a solid oxide cell
(SOC) runs alternately in fuel cell (discharge cycle) and
electrolyzer (charge cycle) modes. The hydrogen produced in
the electrolyzer mode makes the utilization of the battery
safer, by avoiding external hydrogen storage systems. The
stagnant atmosphere in the battery, consisting of H2 and H2O
vapor, is used as a reducing and oxidizing agent for a
metal-metal oxide material, which serves as the integrated
energy storage unit. The storage components have to meet
requirements such as; good kinetics of redox reactions, high
oxygen storage capacity, and high lifetime, in order to
assure a continuous ROB operation for at least 10,000
hours.Storage components are manufactured by type casting or
extrusion using iron oxide based slurries or pastes. Because
of long-term redox cycling at 800 °C, the structure of the
Fe/FeO storage material degrades, making the material
incapable of storing oxygen for continuous redox reactions.
Hence, to prevent storage degradation, the Fe/FeO matrix was
supplemented by “inert” (ZrO2, 8YSZ, Al2O3, MgAl2O4) as
well as reactive oxides (Mn2O3, CeO2, Cr2O3, TiO2, CuO,
Y2O3, SrO, SiO2, CaO, MgO) which are capable of promoting
and/or inhibiting ageing and the kinetics of redox
reactions.Thermogravimetric, XRD, and microstructural
analysis after redox cycling in the redox furnace (420 h)
show that the “inert” oxides hinder to some extent
structural degradation, whereas reactive mixed oxides are
fully capable of preventing sintering for several redox
cycles. The influence of the powder parameters on the
thermochemical processes in the ROB were also revealed as
significant characteristics.},
month = {Jun},
date = {2014-06-15},
organization = {6th Forum on New Materials,
Montecatini Terme (Italy), 15 Jun 2014
- 19 Jun 2014},
subtyp = {Other},
cin = {IEK-1 / IEK-3},
cid = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-3-20101013},
pnm = {123 - Fuel Cells (POF2-123) / SOFC - Solid Oxide Fuel Cell
(SOFC-20140602) / HITEC - Helmholtz Interdisciplinary
Doctoral Training in Energy and Climate Research (HITEC)
(HITEC-20170406)},
pid = {G:(DE-HGF)POF2-123 / G:(DE-Juel1)SOFC-20140602 /
G:(DE-Juel1)HITEC-20170406},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/155754},
}