Sealing Glass of Barium-Calcium-Aluminosilicate System for Solid Oxide Fuel Cells

Jinhua Piao; Kening Sun; Naiqing Zhang; Xinbing Chen; Derui Zhou

doi:10.1016/S1002-0721(07)60451-7

Sealing Glass of Barium-Calcium-Aluminosilicate System for Solid Oxide Fuel Cells

Jinhua Piao, Kening Sun^*, Naiqing Zhang, Xinbing Chen, Derui Zhou

^*Corresponding author for this work

Harbin Institute of Technology

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

13 Citations (Scopus)

Abstract

Abstract: Glass-ceramic materials were developed as a sealant in the solid oxide fuel cell (SOFC) in the temperature range of 800 ∼ 850 °C. The glass materials were based on the glass and glass-ceramic in the BaO-CaO-Al₂O₃-SiO₂-La₂O₃-B₂O₃ system. The thermal expansion coefficient (TEC) decreased with lower Ba²⁺ content and higher Ca²⁺ content, but the glass transition temperature and crystallization temperature increased greatly with an increase in Ca²⁺ content and a decrease in Ba²⁺ content, when the other components in the sealant were invariable. The TEC of the sealant with Ba²⁺ content of 25.4% was 10.8 × 10^-6 K^-1 (temperature range from 25 to 850 °C), and its softening temperature was 950 °C. The TEC of the sealant accorded well with that of La_0.9Sr_0.1Ga_0.8Mg_0.2O_{3 - 6}(LSGM) with a mismatch of only 3%. The sealant had superior stability and compatibility with the LSGM electrolyte during the process of operation in SOFC. The weight loss of the sealant with Ba₂₊ content of 25.4% was approximately zero after heat-treated at 800 °C for 500 h in H₂ and O₂ atmosphere, respectively.

Original language	English
Pages (from-to)	434-438
Number of pages	5
Journal	Journal of Rare Earths
Volume	25
Issue number	4
DOIs	https://doi.org/10.1016/S1002-0721(07)60451-7
Publication status	Published - Aug 2007
Externally published	Yes

Keywords

TM911.4
compatibility
glass-ceramic
rare earths
sealant
solid oxide fuel cell

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10.1016/S1002-0721(07)60451-7

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@article{737f82a18c8f45a3840d3ea5962deb82,

title = "Sealing Glass of Barium-Calcium-Aluminosilicate System for Solid Oxide Fuel Cells",

abstract = "Abstract: Glass-ceramic materials were developed as a sealant in the solid oxide fuel cell (SOFC) in the temperature range of 800 ∼ 850 °C. The glass materials were based on the glass and glass-ceramic in the BaO-CaO-Al2O3-SiO2-La2O3-B2O3 system. The thermal expansion coefficient (TEC) decreased with lower Ba2+ content and higher Ca2+ content, but the glass transition temperature and crystallization temperature increased greatly with an increase in Ca2+ content and a decrease in Ba2+ content, when the other components in the sealant were invariable. The TEC of the sealant with Ba2+ content of 25.4\% was 10.8 × 10-6 K-1 (temperature range from 25 to 850 °C), and its softening temperature was 950 °C. The TEC of the sealant accorded well with that of La0.9Sr0.1Ga0.8Mg0.2O3 - 6(LSGM) with a mismatch of only 3\%. The sealant had superior stability and compatibility with the LSGM electrolyte during the process of operation in SOFC. The weight loss of the sealant with Ba2+ content of 25.4\% was approximately zero after heat-treated at 800 °C for 500 h in H2 and O2 atmosphere, respectively.",

keywords = "TM911.4, compatibility, glass-ceramic, rare earths, sealant, solid oxide fuel cell",

author = "Jinhua Piao and Kening Sun and Naiqing Zhang and Xinbing Chen and Derui Zhou",

year = "2007",

month = aug,

doi = "10.1016/S1002-0721(07)60451-7",

language = "English",

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pages = "434--438",

journal = "Journal of Rare Earths",

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publisher = "Editorial Office of Chinese Rare Earths",

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TY - JOUR

T1 - Sealing Glass of Barium-Calcium-Aluminosilicate System for Solid Oxide Fuel Cells

AU - Piao, Jinhua

AU - Sun, Kening

AU - Zhang, Naiqing

AU - Chen, Xinbing

AU - Zhou, Derui

PY - 2007/8

Y1 - 2007/8

N2 - Abstract: Glass-ceramic materials were developed as a sealant in the solid oxide fuel cell (SOFC) in the temperature range of 800 ∼ 850 °C. The glass materials were based on the glass and glass-ceramic in the BaO-CaO-Al2O3-SiO2-La2O3-B2O3 system. The thermal expansion coefficient (TEC) decreased with lower Ba2+ content and higher Ca2+ content, but the glass transition temperature and crystallization temperature increased greatly with an increase in Ca2+ content and a decrease in Ba2+ content, when the other components in the sealant were invariable. The TEC of the sealant with Ba2+ content of 25.4% was 10.8 × 10-6 K-1 (temperature range from 25 to 850 °C), and its softening temperature was 950 °C. The TEC of the sealant accorded well with that of La0.9Sr0.1Ga0.8Mg0.2O3 - 6(LSGM) with a mismatch of only 3%. The sealant had superior stability and compatibility with the LSGM electrolyte during the process of operation in SOFC. The weight loss of the sealant with Ba2+ content of 25.4% was approximately zero after heat-treated at 800 °C for 500 h in H2 and O2 atmosphere, respectively.

AB - Abstract: Glass-ceramic materials were developed as a sealant in the solid oxide fuel cell (SOFC) in the temperature range of 800 ∼ 850 °C. The glass materials were based on the glass and glass-ceramic in the BaO-CaO-Al2O3-SiO2-La2O3-B2O3 system. The thermal expansion coefficient (TEC) decreased with lower Ba2+ content and higher Ca2+ content, but the glass transition temperature and crystallization temperature increased greatly with an increase in Ca2+ content and a decrease in Ba2+ content, when the other components in the sealant were invariable. The TEC of the sealant with Ba2+ content of 25.4% was 10.8 × 10-6 K-1 (temperature range from 25 to 850 °C), and its softening temperature was 950 °C. The TEC of the sealant accorded well with that of La0.9Sr0.1Ga0.8Mg0.2O3 - 6(LSGM) with a mismatch of only 3%. The sealant had superior stability and compatibility with the LSGM electrolyte during the process of operation in SOFC. The weight loss of the sealant with Ba2+ content of 25.4% was approximately zero after heat-treated at 800 °C for 500 h in H2 and O2 atmosphere, respectively.

KW - TM911.4

KW - compatibility

KW - glass-ceramic

KW - rare earths

KW - sealant

KW - solid oxide fuel cell

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DO - 10.1016/S1002-0721(07)60451-7

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SN - 1002-0721

VL - 25

SP - 434

EP - 438

JO - Journal of Rare Earths

JF - Journal of Rare Earths

IS - 4

ER -

Sealing Glass of Barium-Calcium-Aluminosilicate System for Solid Oxide Fuel Cells

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