Properties of flame sprayed Ce0.8Gd0.2O1.9-δ electrolyte thin films

Karageorgakis, Nikolaos I.; Heel, Andre; Rupp, Jennifer L. M.; Aguirre, Myriam H.; Graule, Thomas; Gauckler, Ludwig J.

doi:10.1002/adfm.201001622

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Properties of flame sprayed Ce0.8Gd0.2O1.9-δ electrolyte thin films
Authors:	Karageorgakis, Nikolaos I. Heel, Andre Rupp, Jennifer L. M. Aguirre, Myriam H. Graule, Thomas Gauckler, Ludwig J.
DOI:	10.1002/adfm.201001622
Published in:	Advanced Functional Materials
Volume(Issue):	201
Issue:	3
Page(s):	532
Pages to:	539
Issue Date:	2011
Publisher / Ed. Institution:	Wiley
ISSN:	1616-301X 1616-3028
Language:	English
Subject (DDC):	660: Chemical engineering
Abstract:	Thin films of Ce0.8Gd0.2O1.9-δ (CGO) are deposited by flame spray deposition with a deposition rate of about 30 nm min−1. The films (deposited at 200°C) are dense, smooth, and particle-free and show a biphasic amorphous/nanocrystalline microstructure. Isothermal grain growth and microstrain are determined as a function of dwell time and temperature and correlated to the electrical conductivity. CGO films annealed for 10 h at 600°C present the best electrical conductivity of 0.46 S m−1 measured at 550°C. Reasons for the superior performance of films annealed at low temperature over higher-temperature-treated samples are discussed and include grain-size evolution, microstrain relaxation, and chemical decomposition. Nanoindentation measurements are conducted on the CGO thin films as a function of annealing temperature to determine the hardness and elastic modulus of the films for potential application as free-standing electrolyte membranes in low-temperature micro-SOFCs (solid oxide fuel cells).
URI:	https://digitalcollection.zhaw.ch/handle/11475/9277
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	School of Engineering
Organisational Unit:	Institute of Materials and Process Engineering (IMPE)
Appears in collections:	Publikationen School of Engineering

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Karageorgakis, N. I., Heel, A., Rupp, J. L. M., Aguirre, M. H., Graule, T., & Gauckler, L. J. (2011). Properties of flame sprayed Ce0.8Gd0.2O1.9-δ electrolyte thin films. Advanced Functional Materials, 201(3), 532–539. https://doi.org/10.1002/adfm.201001622

Karageorgakis, N.I. et al. (2011) ‘Properties of flame sprayed Ce0.8Gd0.2O1.9-δ electrolyte thin films’, Advanced Functional Materials, 201(3), pp. 532–539. Available at: https://doi.org/10.1002/adfm.201001622.

N. I. Karageorgakis, A. Heel, J. L. M. Rupp, M. H. Aguirre, T. Graule, and L. J. Gauckler, “Properties of flame sprayed Ce0.8Gd0.2O1.9-δ electrolyte thin films,” Advanced Functional Materials, vol. 201, no. 3, pp. 532–539, 2011, doi: 10.1002/adfm.201001622.

KARAGEORGAKIS, Nikolaos I., Andre HEEL, Jennifer L. M. RUPP, Myriam H. AGUIRRE, Thomas GRAULE und Ludwig J. GAUCKLER, 2011. Properties of flame sprayed Ce0.8Gd0.2O1.9-δ electrolyte thin films. Advanced Functional Materials. 2011. Bd. 201, Nr. 3, S. 532–539. DOI 10.1002/adfm.201001622

Karageorgakis, Nikolaos I., Andre Heel, Jennifer L. M. Rupp, Myriam H. Aguirre, Thomas Graule, and Ludwig J. Gauckler. 2011. “Properties of Flame Sprayed Ce0.8Gd0.2O1.9-δ Electrolyte Thin Films.” Advanced Functional Materials 201 (3): 532–39. https://doi.org/10.1002/adfm.201001622.

Karageorgakis, Nikolaos I., et al. “Properties of Flame Sprayed Ce0.8Gd0.2O1.9-δ Electrolyte Thin Films.” Advanced Functional Materials, vol. 201, no. 3, 2011, pp. 532–39, https://doi.org/10.1002/adfm.201001622.