Synthesis, sintering and conductivity behavior of ceria-doped Scandia-stabilized zirconia

Hari Prasad Dasari; Jun Sung Ahn; Kiyong Ahn; Sun Young Park; Jongsup Hong; Hyoungchul Kim; Kyung Joong Yoon; Ji Won Son; Hae Weon Lee; Jong Ho Lee

doi:10.1016/j.ssi.2014.05.013

Synthesis, sintering and conductivity behavior of ceria-doped Scandia-stabilized zirconia

Hari Prasad Dasari, Jun Sung Ahn, Kiyong Ahn, Sun Young Park, Jongsup Hong, Hyoungchul Kim, Kyung Joong Yoon, Ji Won Son, Hae Weon Lee, Jong Ho Lee

Department of Mechanical Engineering

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

37 Citations (Scopus)

Abstract

In this work, the effect of ceria addition on the phase formations, sinterability and electrical conductivity of 10 mol.% scandia stabilized zirconia (SSZ) is investigated. Ceria co-doped SSZ (SSZ-xCeO₂ (x = 0.5, 1.0, 5.0 mol.%)) powders were successfully synthesized by glycine-nitrate process and the electrical conductivity was measured in the temperature range of 600-900 °C. Fourier-transform infrared spectroscopy (FT-IR) analysis showed that the samples sintered at 1300 °C/3 h are free from impurities such as un-decomposed nitrates, residual water and nitrile intermediates. From the X-ray diffraction (XRD) analysis, the sintered samples results revealed that the presence of cubic and rhombohedral β-phases and Raman spectroscopy analysis further revealed the presence and monoclinic and tetragonal phases. From the linear shrinkage spectra, a linear shrinkage of 27% was observed at 1300 °C for SSZ and was decreased with the increase of cerium oxide content. The electrical conductivity has been decreased with the increase of ceria content and the SSZ-0.5CeO₂ sample displayed a higher electrical conductivity compared to others indicating that as small as 0.5 mol.% CeO₂ doping in SSZ is enough to ensure good conductivity results for its potential application as an electrolyte material in intermediate-temperature solid oxide fuel cells (IT-SOFCs).

Original language	English
Pages (from-to)	103-109
Number of pages	7
Journal	Solid State Ionics
Volume	263
DOIs	https://doi.org/10.1016/j.ssi.2014.05.013
Publication status	Published - 2014 Oct 1

Bibliographical note

Funding Information:
This research was supported by a grant from the Fundamental R&D Program for Core Technology of Materials (10037175) funded by the Ministry of Knowledge Economy, Republic of Korea and Institutional Research Program of Korea Institute of Science and Technology.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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title = "Synthesis, sintering and conductivity behavior of ceria-doped Scandia-stabilized zirconia",

abstract = "In this work, the effect of ceria addition on the phase formations, sinterability and electrical conductivity of 10 mol.% scandia stabilized zirconia (SSZ) is investigated. Ceria co-doped SSZ (SSZ-xCeO2 (x = 0.5, 1.0, 5.0 mol.%)) powders were successfully synthesized by glycine-nitrate process and the electrical conductivity was measured in the temperature range of 600-900 °C. Fourier-transform infrared spectroscopy (FT-IR) analysis showed that the samples sintered at 1300 °C/3 h are free from impurities such as un-decomposed nitrates, residual water and nitrile intermediates. From the X-ray diffraction (XRD) analysis, the sintered samples results revealed that the presence of cubic and rhombohedral β-phases and Raman spectroscopy analysis further revealed the presence and monoclinic and tetragonal phases. From the linear shrinkage spectra, a linear shrinkage of 27% was observed at 1300 °C for SSZ and was decreased with the increase of cerium oxide content. The electrical conductivity has been decreased with the increase of ceria content and the SSZ-0.5CeO2 sample displayed a higher electrical conductivity compared to others indicating that as small as 0.5 mol.% CeO2 doping in SSZ is enough to ensure good conductivity results for its potential application as an electrolyte material in intermediate-temperature solid oxide fuel cells (IT-SOFCs).",

author = "Dasari, {Hari Prasad} and Ahn, {Jun Sung} and Kiyong Ahn and Park, {Sun Young} and Jongsup Hong and Hyoungchul Kim and Yoon, {Kyung Joong} and Son, {Ji Won} and Lee, {Hae Weon} and Lee, {Jong Ho}",

note = "Funding Information: This research was supported by a grant from the Fundamental R&D Program for Core Technology of Materials (10037175) funded by the Ministry of Knowledge Economy, Republic of Korea and Institutional Research Program of Korea Institute of Science and Technology.",

year = "2014",

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doi = "10.1016/j.ssi.2014.05.013",

language = "English",

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T1 - Synthesis, sintering and conductivity behavior of ceria-doped Scandia-stabilized zirconia

AU - Dasari, Hari Prasad

AU - Ahn, Jun Sung

AU - Ahn, Kiyong

AU - Park, Sun Young

AU - Hong, Jongsup

AU - Kim, Hyoungchul

AU - Yoon, Kyung Joong

AU - Son, Ji Won

AU - Lee, Hae Weon

AU - Lee, Jong Ho

N1 - Funding Information: This research was supported by a grant from the Fundamental R&D Program for Core Technology of Materials (10037175) funded by the Ministry of Knowledge Economy, Republic of Korea and Institutional Research Program of Korea Institute of Science and Technology.

PY - 2014/10/1

Y1 - 2014/10/1

N2 - In this work, the effect of ceria addition on the phase formations, sinterability and electrical conductivity of 10 mol.% scandia stabilized zirconia (SSZ) is investigated. Ceria co-doped SSZ (SSZ-xCeO2 (x = 0.5, 1.0, 5.0 mol.%)) powders were successfully synthesized by glycine-nitrate process and the electrical conductivity was measured in the temperature range of 600-900 °C. Fourier-transform infrared spectroscopy (FT-IR) analysis showed that the samples sintered at 1300 °C/3 h are free from impurities such as un-decomposed nitrates, residual water and nitrile intermediates. From the X-ray diffraction (XRD) analysis, the sintered samples results revealed that the presence of cubic and rhombohedral β-phases and Raman spectroscopy analysis further revealed the presence and monoclinic and tetragonal phases. From the linear shrinkage spectra, a linear shrinkage of 27% was observed at 1300 °C for SSZ and was decreased with the increase of cerium oxide content. The electrical conductivity has been decreased with the increase of ceria content and the SSZ-0.5CeO2 sample displayed a higher electrical conductivity compared to others indicating that as small as 0.5 mol.% CeO2 doping in SSZ is enough to ensure good conductivity results for its potential application as an electrolyte material in intermediate-temperature solid oxide fuel cells (IT-SOFCs).

AB - In this work, the effect of ceria addition on the phase formations, sinterability and electrical conductivity of 10 mol.% scandia stabilized zirconia (SSZ) is investigated. Ceria co-doped SSZ (SSZ-xCeO2 (x = 0.5, 1.0, 5.0 mol.%)) powders were successfully synthesized by glycine-nitrate process and the electrical conductivity was measured in the temperature range of 600-900 °C. Fourier-transform infrared spectroscopy (FT-IR) analysis showed that the samples sintered at 1300 °C/3 h are free from impurities such as un-decomposed nitrates, residual water and nitrile intermediates. From the X-ray diffraction (XRD) analysis, the sintered samples results revealed that the presence of cubic and rhombohedral β-phases and Raman spectroscopy analysis further revealed the presence and monoclinic and tetragonal phases. From the linear shrinkage spectra, a linear shrinkage of 27% was observed at 1300 °C for SSZ and was decreased with the increase of cerium oxide content. The electrical conductivity has been decreased with the increase of ceria content and the SSZ-0.5CeO2 sample displayed a higher electrical conductivity compared to others indicating that as small as 0.5 mol.% CeO2 doping in SSZ is enough to ensure good conductivity results for its potential application as an electrolyte material in intermediate-temperature solid oxide fuel cells (IT-SOFCs).

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JF - Solid State Ionics

ER -

Synthesis, sintering and conductivity behavior of ceria-doped Scandia-stabilized zirconia

Abstract

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