Electrolyte materials for solid oxide fuel cells derived from metal complexes: Gadolinia-doped ceria

Chatchai Veranitisagul; Attaphon Kaewvilai; Worawat Wattanathana; Nattamon Koonsaeng; Enrico Traversa; Apirat Laobuthee

doi:10.1016/j.ceramint.2011.11.006

Electrolyte materials for solid oxide fuel cells derived from metal complexes: Gadolinia-doped ceria

Chatchai Veranitisagul, Attaphon Kaewvilai, Worawat Wattanathana, Nattamon Koonsaeng, Enrico Traversa, Apirat Laobuthee^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

Gadolinia doped ceria (GDC) powders with different gadolinium contents were successfully prepared by the thermal decomposition of ceria complexes. All the calcined powder samples were found to be ceria-based solid-solutions having a fluorite-type structure. The powders were cold-isostatically pressed and sintered in air at 1500°C for 5 h to attain a sintered density of about 90% of its theoretical value. The electrical conductivity of the GDC pellets in air was studied as a function of temperature in the 225-700°C range, by using two-probe electrochemical impedance spectroscopy measurements. The highest total conductivity (σ _600°C = 0.025 S/cm) was found for the Ce _0.85Gd _0.15O _1.925 composition.

Original language	English (US)
Pages (from-to)	2403-2409
Number of pages	7
Journal	Ceramics International
Volume	38
Issue number	3
DOIs	https://doi.org/10.1016/j.ceramint.2011.11.006
State	Published - Apr 2012
Externally published	Yes

Keywords

A. Powders: chemical preparation
C. Ionic conductivity
D. CeO
E. Fuel cells

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.ceramint.2011.11.006

Cite this

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title = "Electrolyte materials for solid oxide fuel cells derived from metal complexes: Gadolinia-doped ceria",

abstract = "Gadolinia doped ceria (GDC) powders with different gadolinium contents were successfully prepared by the thermal decomposition of ceria complexes. All the calcined powder samples were found to be ceria-based solid-solutions having a fluorite-type structure. The powders were cold-isostatically pressed and sintered in air at 1500°C for 5 h to attain a sintered density of about 90% of its theoretical value. The electrical conductivity of the GDC pellets in air was studied as a function of temperature in the 225-700°C range, by using two-probe electrochemical impedance spectroscopy measurements. The highest total conductivity (σ 600°C = 0.025 S/cm) was found for the Ce 0.85Gd 0.15O 1.925 composition.",

keywords = "A. Powders: chemical preparation, C. Ionic conductivity, D. CeO, E. Fuel cells",

author = "Chatchai Veranitisagul and Attaphon Kaewvilai and Worawat Wattanathana and Nattamon Koonsaeng and Enrico Traversa and Apirat Laobuthee",

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doi = "10.1016/j.ceramint.2011.11.006",

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T2 - Gadolinia-doped ceria

AU - Veranitisagul, Chatchai

AU - Kaewvilai, Attaphon

AU - Wattanathana, Worawat

AU - Koonsaeng, Nattamon

AU - Traversa, Enrico

AU - Laobuthee, Apirat

PY - 2012/4

Y1 - 2012/4

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AB - Gadolinia doped ceria (GDC) powders with different gadolinium contents were successfully prepared by the thermal decomposition of ceria complexes. All the calcined powder samples were found to be ceria-based solid-solutions having a fluorite-type structure. The powders were cold-isostatically pressed and sintered in air at 1500°C for 5 h to attain a sintered density of about 90% of its theoretical value. The electrical conductivity of the GDC pellets in air was studied as a function of temperature in the 225-700°C range, by using two-probe electrochemical impedance spectroscopy measurements. The highest total conductivity (σ 600°C = 0.025 S/cm) was found for the Ce 0.85Gd 0.15O 1.925 composition.

KW - A. Powders: chemical preparation

KW - C. Ionic conductivity

KW - D. CeO

KW - E. Fuel cells

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VL - 38

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JO - Ceramics International

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ER -

Electrolyte materials for solid oxide fuel cells derived from metal complexes: Gadolinia-doped ceria

Abstract

Keywords

ASJC Scopus subject areas

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