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Title: Calcium-Iron Oxide as Energy Storage Medium in Rechargeable Oxide Batteries

Journal Article · · Journal of the American Ceramic Society
DOI:https://doi.org/10.1111/jace.14439· OSTI ID:1338567
 [1];  [2];  [3];  [4];  [4];  [1];  [1];  [1];  [1]
  1. Forschungszentrum Julich GmbH, Julich (Germany). Inst. of Energy and Climate Research (IEK); Julich-Aachen Research Alliance (JARA), Julich (Germany)
  2. Forschungszentrum Julich GmbH, Julich (Germany). Julich Centre for Neutron Science (JCNS). Peter Grunberg Inst. (PGI); Liege Univ. (Belgium). LCIS/GREENMAT. Inst. of Chemistry
  3. Forschungszentrum Julich GmbH, Julich (Germany). Julich Centre for Neutron Science (JCNS). Peter Grunberg Inst. (PGI); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
  4. Forschungszentrum Julich GmbH, Julich (Germany). Inst. of Energy and Climate Research (IEK)

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 paper, 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. Finally, results show a great potential to operate the battery with this storage material during multiple charging–discharging cycles.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Forschungszentrum Julich GmbH, Julich (Germany); Julich-Aachen Research Alliance (JARA), Julich (Germany)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); German Federal Ministry of Education and Research (BMBF)
Contributing Organization:
Liege Univ. (Belgium)
Grant/Contract Number:
AC05-00OR22725; 03EK3017
OSTI ID:
1338567
Journal Information:
Journal of the American Ceramic Society, Vol. 99, Issue 12; ISSN 0002-7820
Publisher:
American Ceramic SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

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Cited By (1)

Single phase charge ordered stoichiometric CaFe3O5 with commensurate and incommensurate trimeron ordering journal December 2019