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Development and testing of impregnated La0.20Sr0.25Ca0.45TiO3 anode microstructures for solid oxide fuel cells

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Author(s)

Robert Price, Mark Cassidy, J. Andreas Schuler, Andreas Mai, John T. S. Irvine

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Abstract

The A-site deficient perovskite: La0.20Sr0.25Ca0.45TiO3 (LSCTA-) is a mixed ionic and electronic conductor (MIEC) which shows promising performance as a Solid Oxide Fuel Cell (SOFC) anode ‘backbone’ material, when impregnated with metallic and oxide-ion conducting electrocatalysts. Here, we present data on the complete ceramic processing and optimisation of the LSCTA- ‘backbone’ microstructure, in order to improve current distribution throughout the anode. Through control of ink rheology, screen printing parameters and sintering protocol an advantageous LSCTA- microstructural architecture was developed, exhibiting an ‘effective’ conductivity of 21 S cm-1. Incorporation of this LSCTA- anode microstructure into SOFC and impregnation with Ce0.80Gd0.20O1.9 and either Ni, Ru, Rh, Pt or Pd resulted in promising initial performances during fuel cell testing in a fuel stream of 97% H2:3% H2O. Area Specific Resistances of 0.41 Ω cm2 and 0.39 Ω cm2 were achieved with anodes containing Rh/CGO and Pd/CGO, respectively.
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Original languageEnglish
Title of host publication15th International Symposium on Solid Oxide Fuel Cells (SOFC-XV)
PublisherElectrochemical Society
Pages1385-1395
DOIs
Publication statusPublished - 23 Jul 2017
EventSOFC-XV: 15th International Symposium on Solid Oxide Fuel Cells July 23, 2017 - July 28, 2017 - Hollywood, United States
Duration: 23 Jul 2017 → 28 Jul 2017
Conference number: 15

Publication series

NameECS Transactions
PublisherElectrochemical Society
Number1
Volume78
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

ConferenceSOFC-XV: 15th International Symposium on Solid Oxide Fuel Cells July 23, 2017 - July 28, 2017
Abbreviated titleSOFC-XV
CountryUnited States
CityHollywood
Period23/07/17 → 28/07/17

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