Article (Scientific journals)
Calcium-Iron Oxide as Energy Storage Medium in Rechargeable Oxide Batteries
Berger, Cornelius M.; Mahmoud, Abdelfattah; Hermann, Raphaël et al.
2016In Journal of the American Ceramic Society, p. 1-10
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Keywords :
solid oxide fuel cell; Mossbauer spectroscopy; Rechargeable oxide battery
Abstract :
[en] Rechargeable oxide batteries (ROB) comprise a regenerative solid oxide cell (rSOC) and a storage medium for oxygen ions. A sealed ROB avoids pumping loss, heat loss, and gas purity expenses in comparison with conventional rSOC. However, the iron oxide base storage medium degrades during charging– discharging cycles. In comparison, CaFe3O5 has improved cyclability and a high reversible oxygen storage capacity of 22.3 mol%. In this study, we analyzed the redox mechanism of this compound. After a solid-state synthesis of CaFe3O5, we verified the phase composition and studied the redox reaction by means of X-ray diffraction, Mossbauer spectrometry, and scanning electron microscopy. Results show a great potential to operate the battery with this storage material during multiple charging–discharging cycles.
Disciplines :
Chemistry
Author, co-author :
Berger, Cornelius M.;  Forschungszentrum Julich GmbH > Institute of Energy and Climate Research (IEK),
Mahmoud, Abdelfattah  ;  Université de Liège > Département de chimie (sciences) > LCIS - GreenMAT
Hermann, Raphaël ;  Université de Liège > Département de chimie (sciences) > Département de chimie (sciences)
Braun, Waldemar;  Forschungszentrum Julich GmbH > Institute of Energy and Climate Research (IEK),
Elena, Yazhenskikh;  Forschungszentrum Julich GmbH > Institute of Energy and Climate Research (IEK),
Sohn, Yoo Jung;  Forschungszentrum Julich GmbH > Institute of Energy and Climate Research (IEK),
Menzler, Norbert H.;  Forschungszentrum Julich GmbH > Institute of Energy and Climate Research (IEK),
Guillon, Olivier;  Forschungszentrum Julich GmbH > Institute of Energy and Climate Research (IEK),
Bram, Martin;  Forschungszentrum Julich GmbH > Institute of Energy and Climate Research (IEK),
Language :
English
Title :
Calcium-Iron Oxide as Energy Storage Medium in Rechargeable Oxide Batteries
Publication date :
August 2016
Journal title :
Journal of the American Ceramic Society
ISSN :
0002-7820
Publisher :
Blackwell Publishing
Special issue title :
38450
Pages :
1-10
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 August 2016

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