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

Research output: Contribution to journalArticlepeer-review

Author(s)

Antonella Glisenti, Andrea Bedon, Giovanni Carollo, Cristian Savaniu, John T.S. Irvine

School/Research organisations

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.
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Details

Original languageEnglish
JournalInternational Journal of Hydrogen Energy
VolumeIn press
Early online date10 Aug 2020
DOIs
Publication statusE-pub ahead of print - 10 Aug 2020

    Research areas

  • Reversible solid oxide fuel cell, Symmetric SOFC, Energy storage, Perovskites, LSGF/LSGM, Anode

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