Enhanced ionic conductivity of scandia-ceria-stabilized-zirconia (10Sc1CeSZ) electrolyte synthesized by the microwave-assisted glycine nitrate process

Abdul Azim Jais, S. A. Muhammed Ali, Mustafa Anwar, Mahendra Rao Somalu, Andanastuti Muchtar, Wan Isahak Wan Nor Roslam, Chou Yong Tan, Ramesh Singh, Nigel P. Brandon

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Scandia-stabilized-zirconia is a potential zirconia-based electrolyte for intermediate temperature solid oxide fuel cells (IT-SOFCs). In this study, the properties of zirconia co-doped with 10mol% Sc and 1mol% Ce (scandia-ceria-stabilized-zirconia, 10Sc1CeSZ) electrolyte synthesized by the microwave-assisted glycine nitrate process (MW-GNP) were determined. The effects of microwave heating on the sintering temperature, microstructure, densification and ionic conductivity of the 10Sc1CeSZ electrolyte were evaluated. The phase identification, microstructure and specific surface area of the prepared powder were investigated using X-ray diffraction, transmission electron microscopy and the Brunauer-Emmett-Teller technique, respectively. Using microwave heating, a single cubic-phase powder was produced with nanosized crystallites (19.2nm) and a high specific surface area (16m2/g). It was found that the relative density, porosity and total ionic conductivity of the 10Sc1CeSZ electrolyte are remarkably influenced by the powder processing method and the sintering temperature. The pellet sintered at 1400°C exhibited a maximum ionic conductivity of 0.184S/cm at 800°C. This is the highest conductivity value of a scandia-stabilized-zirconia based electrolyte reported in the literature for this electrolyte type. The corresponding value of the activation energy of electrical conductivity was found to be 0.94eV in the temperature range of 500-800°C. Overall, the use of microwave heating has successfully improved the properties of the 10Sc1CeSZ electrolyte for application in an IT-SOFC.

Original languageEnglish
JournalCeramics International
DOIs
Publication statusAccepted/In press - 5 Nov 2016

Fingerprint

Scandium
Cerium compounds
Ionic conductivity
Zirconia
Nitrates
Glycine
Electrolytes
Amino acids
Microwaves
Microwave heating
Powders
Solid oxide fuel cells (SOFC)
Specific surface area
Sintering
Temperature
Microstructure
zirconium oxide
Densification
Crystallites
Density (specific gravity)

Keywords

  • A. Microwave processing
  • A. Sintering
  • C. Ionic conductivity
  • 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

Cite this

Enhanced ionic conductivity of scandia-ceria-stabilized-zirconia (10Sc1CeSZ) electrolyte synthesized by the microwave-assisted glycine nitrate process. / Azim Jais, Abdul; Muhammed Ali, S. A.; Anwar, Mustafa; Somalu, Mahendra Rao; Muchtar, Andanastuti; Wan Nor Roslam, Wan Isahak; Yong Tan, Chou; Singh, Ramesh; Brandon, Nigel P.

In: Ceramics International, 05.11.2016.

Research output: Contribution to journalArticle

@article{c08ec78f15664aa49f25e31e039cc960,
title = "Enhanced ionic conductivity of scandia-ceria-stabilized-zirconia (10Sc1CeSZ) electrolyte synthesized by the microwave-assisted glycine nitrate process",
abstract = "Scandia-stabilized-zirconia is a potential zirconia-based electrolyte for intermediate temperature solid oxide fuel cells (IT-SOFCs). In this study, the properties of zirconia co-doped with 10mol{\%} Sc and 1mol{\%} Ce (scandia-ceria-stabilized-zirconia, 10Sc1CeSZ) electrolyte synthesized by the microwave-assisted glycine nitrate process (MW-GNP) were determined. The effects of microwave heating on the sintering temperature, microstructure, densification and ionic conductivity of the 10Sc1CeSZ electrolyte were evaluated. The phase identification, microstructure and specific surface area of the prepared powder were investigated using X-ray diffraction, transmission electron microscopy and the Brunauer-Emmett-Teller technique, respectively. Using microwave heating, a single cubic-phase powder was produced with nanosized crystallites (19.2nm) and a high specific surface area (16m2/g). It was found that the relative density, porosity and total ionic conductivity of the 10Sc1CeSZ electrolyte are remarkably influenced by the powder processing method and the sintering temperature. The pellet sintered at 1400°C exhibited a maximum ionic conductivity of 0.184S/cm at 800°C. This is the highest conductivity value of a scandia-stabilized-zirconia based electrolyte reported in the literature for this electrolyte type. The corresponding value of the activation energy of electrical conductivity was found to be 0.94eV in the temperature range of 500-800°C. Overall, the use of microwave heating has successfully improved the properties of the 10Sc1CeSZ electrolyte for application in an IT-SOFC.",
keywords = "A. Microwave processing, A. Sintering, C. Ionic conductivity, E. Fuel cells",
author = "{Azim Jais}, Abdul and {Muhammed Ali}, {S. A.} and Mustafa Anwar and Somalu, {Mahendra Rao} and Andanastuti Muchtar and {Wan Nor Roslam}, {Wan Isahak} and {Yong Tan}, Chou and Ramesh Singh and Brandon, {Nigel P.}",
year = "2016",
month = "11",
day = "5",
doi = "10.1016/j.ceramint.2017.03.135",
language = "English",
journal = "Ceramics International",
issn = "0272-8842",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Enhanced ionic conductivity of scandia-ceria-stabilized-zirconia (10Sc1CeSZ) electrolyte synthesized by the microwave-assisted glycine nitrate process

AU - Azim Jais, Abdul

AU - Muhammed Ali, S. A.

AU - Anwar, Mustafa

AU - Somalu, Mahendra Rao

AU - Muchtar, Andanastuti

AU - Wan Nor Roslam, Wan Isahak

AU - Yong Tan, Chou

AU - Singh, Ramesh

AU - Brandon, Nigel P.

PY - 2016/11/5

Y1 - 2016/11/5

N2 - Scandia-stabilized-zirconia is a potential zirconia-based electrolyte for intermediate temperature solid oxide fuel cells (IT-SOFCs). In this study, the properties of zirconia co-doped with 10mol% Sc and 1mol% Ce (scandia-ceria-stabilized-zirconia, 10Sc1CeSZ) electrolyte synthesized by the microwave-assisted glycine nitrate process (MW-GNP) were determined. The effects of microwave heating on the sintering temperature, microstructure, densification and ionic conductivity of the 10Sc1CeSZ electrolyte were evaluated. The phase identification, microstructure and specific surface area of the prepared powder were investigated using X-ray diffraction, transmission electron microscopy and the Brunauer-Emmett-Teller technique, respectively. Using microwave heating, a single cubic-phase powder was produced with nanosized crystallites (19.2nm) and a high specific surface area (16m2/g). It was found that the relative density, porosity and total ionic conductivity of the 10Sc1CeSZ electrolyte are remarkably influenced by the powder processing method and the sintering temperature. The pellet sintered at 1400°C exhibited a maximum ionic conductivity of 0.184S/cm at 800°C. This is the highest conductivity value of a scandia-stabilized-zirconia based electrolyte reported in the literature for this electrolyte type. The corresponding value of the activation energy of electrical conductivity was found to be 0.94eV in the temperature range of 500-800°C. Overall, the use of microwave heating has successfully improved the properties of the 10Sc1CeSZ electrolyte for application in an IT-SOFC.

AB - Scandia-stabilized-zirconia is a potential zirconia-based electrolyte for intermediate temperature solid oxide fuel cells (IT-SOFCs). In this study, the properties of zirconia co-doped with 10mol% Sc and 1mol% Ce (scandia-ceria-stabilized-zirconia, 10Sc1CeSZ) electrolyte synthesized by the microwave-assisted glycine nitrate process (MW-GNP) were determined. The effects of microwave heating on the sintering temperature, microstructure, densification and ionic conductivity of the 10Sc1CeSZ electrolyte were evaluated. The phase identification, microstructure and specific surface area of the prepared powder were investigated using X-ray diffraction, transmission electron microscopy and the Brunauer-Emmett-Teller technique, respectively. Using microwave heating, a single cubic-phase powder was produced with nanosized crystallites (19.2nm) and a high specific surface area (16m2/g). It was found that the relative density, porosity and total ionic conductivity of the 10Sc1CeSZ electrolyte are remarkably influenced by the powder processing method and the sintering temperature. The pellet sintered at 1400°C exhibited a maximum ionic conductivity of 0.184S/cm at 800°C. This is the highest conductivity value of a scandia-stabilized-zirconia based electrolyte reported in the literature for this electrolyte type. The corresponding value of the activation energy of electrical conductivity was found to be 0.94eV in the temperature range of 500-800°C. Overall, the use of microwave heating has successfully improved the properties of the 10Sc1CeSZ electrolyte for application in an IT-SOFC.

KW - A. Microwave processing

KW - A. Sintering

KW - C. Ionic conductivity

KW - E. Fuel cells

UR - http://www.scopus.com/inward/record.url?scp=85016413302&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85016413302&partnerID=8YFLogxK

U2 - 10.1016/j.ceramint.2017.03.135

DO - 10.1016/j.ceramint.2017.03.135

M3 - Article

AN - SCOPUS:85016413302

JO - Ceramics International

JF - Ceramics International

SN - 0272-8842

ER -