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Reversible, all-perovskite SOFCs based on La, Sr gallates

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Glisenti_2020_IJHE_Reversible_AAM.pdf (862.9Kb)
Date
10/08/2020
Author
Glisenti, Antonella
Bedon, Andrea
Carollo, Giovanni
Savaniu, Cristian
Irvine, John T.S.
Keywords
Reversible solid oxide fuel cell
Symmetric SOFC
Energy storage
Perovskites
LSGF/LSGM
Anode
QD Chemistry
NDAS
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Abstract
In this contribution, a reversible Solid Oxide Cell based on perovskites was developed. La0.6Sr0.4Ga0.3Fe0.7O3 (LSGF) was chosen as electrode and deposited onto La0.9Sr0.1Ga0.8Mg0.2O3 (LSGM) electrolyte. The cell was investigated from the morphological (SEM) and compatibility (XRD) point of view. Electrochemical investigation confirmed that the cell can operate in fuel cell and in electrolyser modes. Impregnation with CGO and Pd allowed a 15 times increment of the power density (until limit is the cell architecture). The same cell with an impregnated negative electrode was then tested in steam electrolysis mode in a non-reducing environment. The overall performance is slightly lower than state-of-the-art materials and comparable with similar perovskites, and in general is fair considering the needed cell optimization (i.e an anode supported configuration is necessary). The cell (impregnated and not) activates at 0.7 V. Obtained data suggest thus LSGF/LSGM/LSGF cell, is promising as reversible SOC for intermediate temperature.
Citation
Glisenti , A , Bedon , A , Carollo , G , Savaniu , C & Irvine , J T S 2020 , ' Reversible, all-perovskite SOFCs based on La, Sr gallates ' , International Journal of Hydrogen Energy , vol. In press . https://doi.org/10.1016/j.ijhydene.2020.07.142
Publication
International Journal of Hydrogen Energy
Status
Peer reviewed
DOI
https://doi.org/10.1016/j.ijhydene.2020.07.142
ISSN
0360-3199
Type
Journal article
Rights
Copyright © 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1016/j.ijhydene.2020.07.142
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/23746

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