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

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

doi:10.1149/07801.1385ecst

Development and testing of impregnated La_0.20Sr_0.25Ca_0.45TiO₃ anode microstructures for solid oxide fuel cells

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

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

8 Citations (Scopus)

5 Downloads (Pure)

Abstract

The A-site deficient perovskite: La_0.20Sr_0.25Ca_0.45TiO₃ (LSCT_A-) 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 LSCT_A- ‘backbone’ microstructure, in order to improve current distribution throughout the anode. Through control of ink rheology, screen printing parameters and sintering protocol an advantageous LSCT_A- microstructural architecture was developed, exhibiting an ‘effective’ conductivity of 21 S cm^-1. Incorporation of this LSCT_A- anode microstructure into SOFC and impregnation with Ce_0.80Gd_0.20O_1.9 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.

Original language	English
Title of host publication	15th International Symposium on Solid Oxide Fuel Cells (SOFC-XV)
Publisher	Electrochemical Society
Pages	1385-1395
DOIs	https://doi.org/10.1149/07801.1385ecst
Publication status	Published - 23 Jul 2017
Event	SOFC-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

Name	ECS Transactions
Publisher	Electrochemical Society
Number	1
Volume	78
ISSN (Print)	1938-6737
ISSN (Electronic)	1938-5862

Conference

Conference	SOFC-XV: 15th International Symposium on Solid Oxide Fuel Cells July 23, 2017 - July 28, 2017
Abbreviated title	SOFC-XV
Country/Territory	United States
City	Hollywood
Period	23/07/17 → 28/07/17

Access to Document

10.1149/07801.1385ecst

Price-2017-Development-and-testing-ECSTrans-SOFCXV-AAM
© 2017 ECS - The Electrochemical Society. This work has been made available online in accordance with the publisher’s policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1149/07801.1385ecst
Accepted author manuscript, 741 KB

Tailoring of microstructural evolution: Tailoring of microstructural evolution in impregnated SOFC electrodes
Irvine, J. T. S. (PI), Cassidy, M. (CoI), Connor, P. A. (CoI) & Savaniu, C. D. (CoI)
EPSRC
1/01/15 → 31/05/18
Project: Standard

Cite this

Price, R., Cassidy, M., Schuler, J. A., Mai, A., & Irvine, J. T. S. (2017). Development and testing of impregnated La_0.20Sr_0.25Ca_0.45TiO₃ anode microstructures for solid oxide fuel cells. In 15th International Symposium on Solid Oxide Fuel Cells (SOFC-XV) (pp. 1385-1395). (ECS Transactions; Vol. 78, No. 1). Electrochemical Society. https://doi.org/10.1149/07801.1385ecst

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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 {\textquoteleft}backbone{\textquoteright} material, when impregnated with metallic and oxide-ion conducting electrocatalysts. Here, we present data on the complete ceramic processing and optimisation of the LSCTA- {\textquoteleft}backbone{\textquoteright} 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 {\textquoteleft}effective{\textquoteright} 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.",

author = "Robert Price and Mark Cassidy and Schuler, {J. Andreas} and Andreas Mai and Irvine, {John T. S.}",

note = "Funding: EPSRC project EP/M014304/1 “Tailoring of Microstructural Evolution in Impregnated SOFC Electrodes”, the University of St Andrews and HEXIS AG.; SOFC-XV: 15th International Symposium on Solid Oxide Fuel Cells July 23, 2017 - July 28, 2017, SOFC-XV ; Conference date: 23-07-2017 Through 28-07-2017",

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language = "English",

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Price, R, Cassidy, M, Schuler, JA, Mai, A & Irvine, JTS 2017, Development and testing of impregnated La_0.20Sr_0.25Ca_0.45TiO₃ anode microstructures for solid oxide fuel cells. in 15th International Symposium on Solid Oxide Fuel Cells (SOFC-XV). ECS Transactions, no. 1, vol. 78, Electrochemical Society, pp. 1385-1395, SOFC-XV: 15th International Symposium on Solid Oxide Fuel Cells July 23, 2017 - July 28, 2017, Hollywood, Florida, United States, 23/07/17. https://doi.org/10.1149/07801.1385ecst

Development and testing of impregnated La_0.20Sr_0.25Ca_0.45TiO₃ anode microstructures for solid oxide fuel cells. / Price, Robert; Cassidy, Mark; Schuler, J. Andreas et al.
15th International Symposium on Solid Oxide Fuel Cells (SOFC-XV). Electrochemical Society, 2017. p. 1385-1395 (ECS Transactions; Vol. 78, No. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AB - 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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