Firing characteristics of La0.8Sr0.2Ga0.8Mg0.2O3-δ electrolyte powders prepared by spray pyrolysis

Dae Soo Jung; Hye Young Koo; Hee Chan Jang; Jung Hyun Kim; Yoon Ho Cho; Jong Heun Lee; Yun Chan Kang

doi:10.1016/j.jallcom.2009.08.047

Firing characteristics of La_0.8Sr_0.2Ga_0.8Mg_0.2O_3-δ electrolyte powders prepared by spray pyrolysis

Dae Soo Jung, Hye Young Koo, Hee Chan Jang, Jung Hyun Kim, Yoon Ho Cho, Jong Heun Lee, Yun Chan Kang

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

12 Citations (Scopus)

Abstract

La_0.8Sr_0.2Ga_0.8Mg_0.2O_3-δ (LSGM) electrolyte powders suitable for use in solid-oxide fuel cells were prepared by spray pyrolysis. The powders were spherical in shape and exhibited non-aggregation characteristics. The mean particle size of the LSGM powders was 0.89 μm. The powders post-treated at temperatures of 1000 and 1300 °C had main crystal structure of LSGM. The powders post-treated at temperatures of 1000 and 1300 °C had impurity peaks of LaSrGa₃O₇ and LaSrGaO₄ phases. Pellets sintered at 1300 and 1400 °C had relative densities of 82% and 95% and mean grain sizes of 2.3 and 3.1 μm, respectively. The pellet sintered at 1400 °C had a lower α_gb^app value than that of the pellet sintered at 1300 °C. The total conductivities of the pellets sintered at 1300 and 1400 °C were 1.44 × 10^-3 and 2.89 × 10^-3 S/cm, respectively, at a low measuring temperature of 500 °C.

Original language	English
Pages (from-to)	693-697
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	487
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2009.08.047
Publication status	Published - 2009 Nov 13

Keywords

Ceramics
Chemical synthesis
Fuel cells

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2009.08.047

Cite this

@article{1e66a1feeb7c4eba991326194ac9ac7f,

title = "Firing characteristics of La0.8Sr0.2Ga0.8Mg0.2O3-δ electrolyte powders prepared by spray pyrolysis",

abstract = "La0.8Sr0.2Ga0.8Mg0.2O3-δ (LSGM) electrolyte powders suitable for use in solid-oxide fuel cells were prepared by spray pyrolysis. The powders were spherical in shape and exhibited non-aggregation characteristics. The mean particle size of the LSGM powders was 0.89 μm. The powders post-treated at temperatures of 1000 and 1300 °C had main crystal structure of LSGM. The powders post-treated at temperatures of 1000 and 1300 °C had impurity peaks of LaSrGa3O7 and LaSrGaO4 phases. Pellets sintered at 1300 and 1400 °C had relative densities of 82% and 95% and mean grain sizes of 2.3 and 3.1 μm, respectively. The pellet sintered at 1400 °C had a lower αgbapp value than that of the pellet sintered at 1300 °C. The total conductivities of the pellets sintered at 1300 and 1400 °C were 1.44 × 10-3 and 2.89 × 10-3 S/cm, respectively, at a low measuring temperature of 500 °C.",

keywords = "Ceramics, Chemical synthesis, Fuel cells",

author = "Jung, {Dae Soo} and Koo, {Hye Young} and Jang, {Hee Chan} and Kim, {Jung Hyun} and Cho, {Yoon Ho} and Lee, {Jong Heun} and Kang, {Yun Chan}",

year = "2009",

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doi = "10.1016/j.jallcom.2009.08.047",

language = "English",

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T1 - Firing characteristics of La0.8Sr0.2Ga0.8Mg0.2O3-δ electrolyte powders prepared by spray pyrolysis

AU - Jung, Dae Soo

AU - Koo, Hye Young

AU - Jang, Hee Chan

AU - Kim, Jung Hyun

AU - Cho, Yoon Ho

AU - Lee, Jong Heun

AU - Kang, Yun Chan

PY - 2009/11/13

Y1 - 2009/11/13

N2 - La0.8Sr0.2Ga0.8Mg0.2O3-δ (LSGM) electrolyte powders suitable for use in solid-oxide fuel cells were prepared by spray pyrolysis. The powders were spherical in shape and exhibited non-aggregation characteristics. The mean particle size of the LSGM powders was 0.89 μm. The powders post-treated at temperatures of 1000 and 1300 °C had main crystal structure of LSGM. The powders post-treated at temperatures of 1000 and 1300 °C had impurity peaks of LaSrGa3O7 and LaSrGaO4 phases. Pellets sintered at 1300 and 1400 °C had relative densities of 82% and 95% and mean grain sizes of 2.3 and 3.1 μm, respectively. The pellet sintered at 1400 °C had a lower αgbapp value than that of the pellet sintered at 1300 °C. The total conductivities of the pellets sintered at 1300 and 1400 °C were 1.44 × 10-3 and 2.89 × 10-3 S/cm, respectively, at a low measuring temperature of 500 °C.

AB - La0.8Sr0.2Ga0.8Mg0.2O3-δ (LSGM) electrolyte powders suitable for use in solid-oxide fuel cells were prepared by spray pyrolysis. The powders were spherical in shape and exhibited non-aggregation characteristics. The mean particle size of the LSGM powders was 0.89 μm. The powders post-treated at temperatures of 1000 and 1300 °C had main crystal structure of LSGM. The powders post-treated at temperatures of 1000 and 1300 °C had impurity peaks of LaSrGa3O7 and LaSrGaO4 phases. Pellets sintered at 1300 and 1400 °C had relative densities of 82% and 95% and mean grain sizes of 2.3 and 3.1 μm, respectively. The pellet sintered at 1400 °C had a lower αgbapp value than that of the pellet sintered at 1300 °C. The total conductivities of the pellets sintered at 1300 and 1400 °C were 1.44 × 10-3 and 2.89 × 10-3 S/cm, respectively, at a low measuring temperature of 500 °C.

KW - Ceramics

KW - Chemical synthesis

KW - Fuel cells

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