Characteristics of a SiO2-B2O3-Al2O3-BaCO3-PbO2-ZnO glass-ceramic sealant for SOFCs

Ruifang Wang; Zhe Lü; Chaoqian Liu; Ruibin Zhu; Xiqiang Huang; Bo Wei; Na Ai; Wenhui Su

doi:10.1016/j.jallcom.2006.05.105

Characteristics of a SiO₂-B₂O₃-Al₂O₃-BaCO₃-PbO₂-ZnO glass-ceramic sealant for SOFCs

Ruifang Wang
, Zhe Lü^*
, Chaoqian Liu
, Ruibin Zhu
, Xiqiang Huang
, Bo Wei
, Na Ai
, Wenhui Su

^*Corresponding author for this work

School of Physics

Harbin Institute of Technology
Jilin University
CAS - International Center for Material Physics

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

48 Scopus citations

Abstract

A glass system based on SiO₂-B₂O₃-Al₂O₃-BaCO₃-PbO₂-ZnO was prepared and a sort of compounding was optimized to determine the composition with best performance named AF8. The technical thermal expansion coefficient (t-TEC) is 10.58 × 10^-6 K^-1 between 323 and 773 K. The resistivity of AF8 is 1.95 × 10⁴ Ω cm at 800 °C. The optimum sealing temperature range was 850-880 °C. AF8 glass sealant could adhere with electrolyte of yttria stabilized zirconia (YSZ) well and there were no perforative pores in the sealant. The leak rate of AF8 glass was 0.81 × 10^-7 mbar l s^-1 cm^-1 at 800 °C tested by oxygen coulometric titration which was closed to the required value. Around the sealing temperature, contact angle of AF8 on YSZ is about 110°. This angle can make them adhere well under a suitable pressure, and also avoids glass spreading freely on surface of the electrolyte. All measured results approved that AF8 may become a practical sealant for SOFCs.

Original language	English
Pages (from-to)	189-193
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	432
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2006.05.105
State	Published - 25 Apr 2007

Keywords

Contact angle
Glass sealant
Resistivity
Solid oxide fuel cells
Thermal expansion

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10.1016/j.jallcom.2006.05.105

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title = "Characteristics of a SiO2-B2O3-Al2O3-BaCO3-PbO2-ZnO glass-ceramic sealant for SOFCs",

abstract = "A glass system based on SiO2-B2O3-Al2O3-BaCO3-PbO2-ZnO was prepared and a sort of compounding was optimized to determine the composition with best performance named AF8. The technical thermal expansion coefficient (t-TEC) is 10.58 × 10-6 K-1 between 323 and 773 K. The resistivity of AF8 is 1.95 × 104 Ω cm at 800 °C. The optimum sealing temperature range was 850-880 °C. AF8 glass sealant could adhere with electrolyte of yttria stabilized zirconia (YSZ) well and there were no perforative pores in the sealant. The leak rate of AF8 glass was 0.81 × 10-7 mbar l s-1 cm-1 at 800 °C tested by oxygen coulometric titration which was closed to the required value. Around the sealing temperature, contact angle of AF8 on YSZ is about 110°. This angle can make them adhere well under a suitable pressure, and also avoids glass spreading freely on surface of the electrolyte. All measured results approved that AF8 may become a practical sealant for SOFCs.",

keywords = "Contact angle, Glass sealant, Resistivity, Solid oxide fuel cells, Thermal expansion",

author = "Ruifang Wang and Zhe L{\"u} and Chaoqian Liu and Ruibin Zhu and Xiqiang Huang and Bo Wei and Na Ai and Wenhui Su",

year = "2007",

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doi = "10.1016/j.jallcom.2006.05.105",

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T1 - Characteristics of a SiO2-B2O3-Al2O3-BaCO3-PbO2-ZnO glass-ceramic sealant for SOFCs

AU - Wang, Ruifang

AU - Lü, Zhe

AU - Liu, Chaoqian

AU - Zhu, Ruibin

AU - Huang, Xiqiang

AU - Wei, Bo

AU - Ai, Na

AU - Su, Wenhui

PY - 2007/4/25

Y1 - 2007/4/25

N2 - A glass system based on SiO2-B2O3-Al2O3-BaCO3-PbO2-ZnO was prepared and a sort of compounding was optimized to determine the composition with best performance named AF8. The technical thermal expansion coefficient (t-TEC) is 10.58 × 10-6 K-1 between 323 and 773 K. The resistivity of AF8 is 1.95 × 104 Ω cm at 800 °C. The optimum sealing temperature range was 850-880 °C. AF8 glass sealant could adhere with electrolyte of yttria stabilized zirconia (YSZ) well and there were no perforative pores in the sealant. The leak rate of AF8 glass was 0.81 × 10-7 mbar l s-1 cm-1 at 800 °C tested by oxygen coulometric titration which was closed to the required value. Around the sealing temperature, contact angle of AF8 on YSZ is about 110°. This angle can make them adhere well under a suitable pressure, and also avoids glass spreading freely on surface of the electrolyte. All measured results approved that AF8 may become a practical sealant for SOFCs.

AB - A glass system based on SiO2-B2O3-Al2O3-BaCO3-PbO2-ZnO was prepared and a sort of compounding was optimized to determine the composition with best performance named AF8. The technical thermal expansion coefficient (t-TEC) is 10.58 × 10-6 K-1 between 323 and 773 K. The resistivity of AF8 is 1.95 × 104 Ω cm at 800 °C. The optimum sealing temperature range was 850-880 °C. AF8 glass sealant could adhere with electrolyte of yttria stabilized zirconia (YSZ) well and there were no perforative pores in the sealant. The leak rate of AF8 glass was 0.81 × 10-7 mbar l s-1 cm-1 at 800 °C tested by oxygen coulometric titration which was closed to the required value. Around the sealing temperature, contact angle of AF8 on YSZ is about 110°. This angle can make them adhere well under a suitable pressure, and also avoids glass spreading freely on surface of the electrolyte. All measured results approved that AF8 may become a practical sealant for SOFCs.

KW - Contact angle

KW - Glass sealant

KW - Resistivity

KW - Solid oxide fuel cells

KW - Thermal expansion

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DO - 10.1016/j.jallcom.2006.05.105

M3 - 文章

AN - SCOPUS:33847384675

SN - 0925-8388

VL - 432

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JO - Journal of Alloys and Compounds

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IS - 1-2

ER -

Characteristics of a SiO₂-B₂O₃-Al₂O₃-BaCO₃-PbO₂-ZnO glass-ceramic sealant for SOFCs

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Keywords

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