Pt-Doped Lanthanum Ferrites as Versatile Electrode Material for Solid Oxide Cells

The tailoring of multi-tasking perovskite oxide-based electrodes for solid oxide cells has shown growing interest. The development of flexible structures represents a crucial step towards the design of symmetric and possibly SOFC/SOEC reversible systems. In this work, low (0.5 mol%) B-site Pt-doping...

Full description

Saved in:
Bibliographic Details
Published in:ECS transactions 2023-05, Vol.111 (6), p.2425-2433
Main Authors: Duranti, Leonardo, Panunzi, Anna Paola, Draz, Umer, D'Ottavi, Cadia, Licoccia, Silvia, Di Bartolomeo, Elisabetta
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The tailoring of multi-tasking perovskite oxide-based electrodes for solid oxide cells has shown growing interest. The development of flexible structures represents a crucial step towards the design of symmetric and possibly SOFC/SOEC reversible systems. In this work, low (0.5 mol%) B-site Pt-doping in a lanthanum strontium ferrite is presented as a successful approach to enhance the parent perovskite properties as both SOC air and fuel electrode. Structural, morphological and electrochemical characterizations of La 0.6 Sr 0.4 Fe 0.995 Pt 0.005 O 3-δ (LSFPt005) are provided and compared to the undoped compound. LSFPt005-symmetric devices are tested as CO-SOFCs and CO 2 -SOECs at 850 °C, respectively, obtaining a maximum power density of 301 mW/cm 2 and a current density of 0.82 A/cm 2 at 1.5 V. Insights of cell operating mechanisms are provided through electrochemical impedance spectroscopy.
ISSN:1938-5862
1938-6737
DOI:10.1149/11106.2425ecst