A Novel SOFC/SOEC Sealing Glass with a Low SiO2 Content and a High Thermal Expansion Coefficient

Wolff-Ragnar Kiebach, Karsten Agersted, Philipp Zielke, Ilaria Ritucci, Mette Bybjerg Brock, Peter Vang Hendriksen

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

Solid oxide cells require seals that can function in harsh, elevated temperature environments. In addition, a low Si content can be advantageous, since Si impurities from the glass sealant can be transported to the active fuel electrode and poison the Ni-YSZ triple phase boundaries. To reduce the amount of Si emission, a low Si containing sealing glass (chemical composition: 50 mol% CaO, 20 mol% ZnO, 20 mol% B2O3 and 10 mol% SiO2) was developed at DTU. In this work, the results from thermal characterization, the crystallization behavior of the glass and the long-term stability and adhesion behavior of the glass were studied under SOFC and SOEC relevant conditions. The glass-ceramic sealant performed well over 400 h, and no cell degradation or leakage related to the seal was found, indicating that the developed glass system is applicable for the use in SOFC/SOEC stacks.
Original languageEnglish
JournalE C S Transactions
Volume78
Issue number1
Pages (from-to)1739-1747
ISSN1938-5862
DOIs
Publication statusPublished - 2017
Event15th International Symposium on Solid Oxide Fuel Cells (SOFC-XV) - Hollywood, United States
Duration: 23 Jul 201728 Jul 2017
Conference number: 15
http://www.electrochem.org/sofc-xv

Conference

Conference15th International Symposium on Solid Oxide Fuel Cells (SOFC-XV)
Number15
CountryUnited States
CityHollywood
Period23/07/201728/07/2017
Internet address

Cite this

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title = "A Novel SOFC/SOEC Sealing Glass with a Low SiO2 Content and a High Thermal Expansion Coefficient",
abstract = "Solid oxide cells require seals that can function in harsh, elevated temperature environments. In addition, a low Si content can be advantageous, since Si impurities from the glass sealant can be transported to the active fuel electrode and poison the Ni-YSZ triple phase boundaries. To reduce the amount of Si emission, a low Si containing sealing glass (chemical composition: 50 mol{\%} CaO, 20 mol{\%} ZnO, 20 mol{\%} B2O3 and 10 mol{\%} SiO2) was developed at DTU. In this work, the results from thermal characterization, the crystallization behavior of the glass and the long-term stability and adhesion behavior of the glass were studied under SOFC and SOEC relevant conditions. The glass-ceramic sealant performed well over 400 h, and no cell degradation or leakage related to the seal was found, indicating that the developed glass system is applicable for the use in SOFC/SOEC stacks.",
author = "Wolff-Ragnar Kiebach and Karsten Agersted and Philipp Zielke and Ilaria Ritucci and Brock, {Mette Bybjerg} and Hendriksen, {Peter Vang}",
year = "2017",
doi = "10.1149/07801.1739ecst",
language = "English",
volume = "78",
pages = "1739--1747",
journal = "E C S Transactions",
issn = "1938-5862",
publisher = "The Electrochemical Society",
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}

A Novel SOFC/SOEC Sealing Glass with a Low SiO2 Content and a High Thermal Expansion Coefficient. / Kiebach, Wolff-Ragnar; Agersted, Karsten; Zielke, Philipp; Ritucci, Ilaria; Brock, Mette Bybjerg; Hendriksen, Peter Vang.

In: E C S Transactions, Vol. 78, No. 1, 2017, p. 1739-1747.

Research output: Contribution to journalConference articleResearchpeer-review

TY - GEN

T1 - A Novel SOFC/SOEC Sealing Glass with a Low SiO2 Content and a High Thermal Expansion Coefficient

AU - Kiebach, Wolff-Ragnar

AU - Agersted, Karsten

AU - Zielke, Philipp

AU - Ritucci, Ilaria

AU - Brock, Mette Bybjerg

AU - Hendriksen, Peter Vang

PY - 2017

Y1 - 2017

N2 - Solid oxide cells require seals that can function in harsh, elevated temperature environments. In addition, a low Si content can be advantageous, since Si impurities from the glass sealant can be transported to the active fuel electrode and poison the Ni-YSZ triple phase boundaries. To reduce the amount of Si emission, a low Si containing sealing glass (chemical composition: 50 mol% CaO, 20 mol% ZnO, 20 mol% B2O3 and 10 mol% SiO2) was developed at DTU. In this work, the results from thermal characterization, the crystallization behavior of the glass and the long-term stability and adhesion behavior of the glass were studied under SOFC and SOEC relevant conditions. The glass-ceramic sealant performed well over 400 h, and no cell degradation or leakage related to the seal was found, indicating that the developed glass system is applicable for the use in SOFC/SOEC stacks.

AB - Solid oxide cells require seals that can function in harsh, elevated temperature environments. In addition, a low Si content can be advantageous, since Si impurities from the glass sealant can be transported to the active fuel electrode and poison the Ni-YSZ triple phase boundaries. To reduce the amount of Si emission, a low Si containing sealing glass (chemical composition: 50 mol% CaO, 20 mol% ZnO, 20 mol% B2O3 and 10 mol% SiO2) was developed at DTU. In this work, the results from thermal characterization, the crystallization behavior of the glass and the long-term stability and adhesion behavior of the glass were studied under SOFC and SOEC relevant conditions. The glass-ceramic sealant performed well over 400 h, and no cell degradation or leakage related to the seal was found, indicating that the developed glass system is applicable for the use in SOFC/SOEC stacks.

U2 - 10.1149/07801.1739ecst

DO - 10.1149/07801.1739ecst

M3 - Conference article

VL - 78

SP - 1739

EP - 1747

JO - E C S Transactions

JF - E C S Transactions

SN - 1938-5862

IS - 1

ER -