TY  - JOUR
AU  - Berger, Cornelius
AU  - Mahmoud, Abdelfattah
AU  - Hermann, Raphael
AU  - Braun, Waldemar
AU  - Yazhenskikh, Elena
AU  - Sohn, Yoo Jung
AU  - Menzler, Norbert H.
AU  - Guillon, Olivier
AU  - Bram, Martin
TI  - Calcium-Iron Oxide as Energy Storage Medium in Rechargeable Oxide Batteries
JO  - Journal of the American Ceramic Society
VL  - 99
IS  - 12
SN  - 0002-7820
CY  - Oxford [u.a.]
PB  - Wiley-Blackwell
M1  - FZJ-2016-07154
SP  - 4083-4092
PY  - 2016
AB  - 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, Mössbauer spectrometry, and scanning electron microscopy. Results show a great potential to operate the battery with this storage material during multiple charging–discharging cycles.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000393844100032
DO  - DOI:10.1111/jace.14439
UR  - https://juser.fz-juelich.de/record/824587
ER  -