Synthesis and performance of A-site deficient lanthanum-doped strontium titanate by nanoparticle based spray pyrolysis

Burnat, Dariusz Artur; Heel, Andre; Holzer, Lorenz; Kata, Dariusz; Lis, Jerzy; Graule, Thomas J.

doi:10.1016/j.jpowsour.2011.10.088

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Synthesis and performance of A-site deficient lanthanum-doped strontium titanate by nanoparticle based spray pyrolysis
Authors:	Burnat, Dariusz Artur Heel, Andre Holzer, Lorenz Kata, Dariusz Lis, Jerzy Graule, Thomas J.
DOI:	10.1016/j.jpowsour.2011.10.088
Published in:	Journal of Power Sources
Volume(Issue):	201
Page(s):	26
Pages to:	36
Issue Date:	Mar-2012
Publisher / Ed. Institution:	Elsevier
ISSN:	0378-7753 1873-2755
Language:	English
Subject (DDC):	620.11: Engineering materials
Abstract:	In this study A-site deficient lanthanum doped strontium titanate, which is considered as a promising, redox-stable candidate for full ceramic anodes in Solid Oxide Fuel Cells (SOFCs), was produced by nanoparticle-based spray pyrolysis. In this process cost-effective nitrate salts and titania nanoparticles are used as precursors. LST with a nominal composition of La_0.2Sr_0.7TiO3 showed limited stability at temperatures higher than 1290°C. It was observed that minor contents of secondary phases, which form at elevated temperatures, invoke a drastic loss of the electrical performance. Thermal stability is significantly increased by a slight enrichment of strontium. The phase pure A-site deficient LST shows remarkably higher electrical performance than similar stoichiometric counterparts. Reductive sintering results in a conductivity as high as 600 S cm−1 at 600°C. Furthermore the A-site deficient LST shows a high redox-stability and fast redox-kinetics. With these properties LST is a suitable material for the fabrication of a new generation of Ni-free ceramic SOFC anodes. Secondary phases have a significant influence on the electrical conductivity and redox behaviour.
URI:	https://digitalcollection.zhaw.ch/handle/11475/2197
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	School of Engineering
Organisational Unit:	Institute of Computational Physics (ICP) Institute of Materials and Process Engineering (IMPE)
Appears in collections:	Publikationen School of Engineering

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Burnat, D. A., Heel, A., Holzer, L., Kata, D., Lis, J., & Graule, T. J. (2012). Synthesis and performance of A-site deficient lanthanum-doped strontium titanate by nanoparticle based spray pyrolysis. Journal of Power Sources, 201, 26–36. https://doi.org/10.1016/j.jpowsour.2011.10.088

Burnat, D.A. et al. (2012) ‘Synthesis and performance of A-site deficient lanthanum-doped strontium titanate by nanoparticle based spray pyrolysis’, Journal of Power Sources, 201, pp. 26–36. Available at: https://doi.org/10.1016/j.jpowsour.2011.10.088.

D. A. Burnat, A. Heel, L. Holzer, D. Kata, J. Lis, and T. J. Graule, “Synthesis and performance of A-site deficient lanthanum-doped strontium titanate by nanoparticle based spray pyrolysis,” Journal of Power Sources, vol. 201, pp. 26–36, Mar. 2012, doi: 10.1016/j.jpowsour.2011.10.088.

BURNAT, Dariusz Artur, Andre HEEL, Lorenz HOLZER, Dariusz KATA, Jerzy LIS und Thomas J. GRAULE, 2012. Synthesis and performance of A-site deficient lanthanum-doped strontium titanate by nanoparticle based spray pyrolysis. Journal of Power Sources. März 2012. Bd. 201, S. 26–36. DOI 10.1016/j.jpowsour.2011.10.088

Burnat, Dariusz Artur, Andre Heel, Lorenz Holzer, Dariusz Kata, Jerzy Lis, and Thomas J. Graule. 2012. “Synthesis and Performance of A-Site Deficient Lanthanum-Doped Strontium Titanate by Nanoparticle Based Spray Pyrolysis.” Journal of Power Sources 201 (March): 26–36. https://doi.org/10.1016/j.jpowsour.2011.10.088.

Burnat, Dariusz Artur, et al. “Synthesis and Performance of A-Site Deficient Lanthanum-Doped Strontium Titanate by Nanoparticle Based Spray Pyrolysis.” Journal of Power Sources, vol. 201, Mar. 2012, pp. 26–36, https://doi.org/10.1016/j.jpowsour.2011.10.088.