SiO2–Al2O3–Y2O3–ZnO glass sealants for intermediate temperature solid oxide fuel cell applications

Wang, Sea-Fue; Hsu, Yung−Fu; Cheng, Chieh-Sheng; Hsieh, Yueh-Chi

doi:10.1016/j.ijhydene.2013.09.034

Cited by 19 publications

(14 citation statements)

References 45 publications

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“…More recently, there is a need to reduce the operational temperature from 900°C to 1000°C for traditional SOFC into the so‐called intermediate temperature (IT) range 500°C–750°C, to reduce the corrosion rate of SOFC components . Great efforts have therefore been made to reduce the sealing temperature of glasses toward the design target of IT‐SOFC . In general, network modifiers depolymerize the glass network and thus reduce the glass‐transition temperature ( T g ) and softening temperature ( T d ) of glass.…”

Section: Introductionmentioning

confidence: 99%

“…1 Great efforts have therefore been made to reduce the sealing temperature of glasses toward the design target of IT-SOFC. 2,3 In general, network modifiers depolymerize the glass network and thus reduce the glasstransition temperature (T g ) and softening temperature (T d ) of glass. For example, bismuth-containing glasses are of great interest, since Bi 2 O 3 is effective in reducing T g and T d of glasses when acting as network modifier.…”

Section: Introductionmentioning

confidence: 99%

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Tuning the Interfacial Reaction Between Bismuth‐Containing Sealing Glasses and Cr‐Containing Interconnect: Effect of ZnO

et al. 2015

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The interfacial reaction between sealing glasses and Cr‐containing interconnect presents a challenge for the development of solid oxide fuel cell (SOFC). In this work, we report that the interfacial reaction between bismuth‐containing sealing glasses and Cr‐containing interconnect can be tailored by ZnO dopant. The addition of ZnO contributes to a more open glass structure, resulting in the facilitated diffusion of ions in glass and thus the increase in the interfacial reaction. On the other hand, the further increase in ZnO content enhances the Bi3+→Bi5+ transition in glasses and reduces the redox interfacial reaction by consuming the oxygen available at the glass/metal interface. In addition, good joining can be observed at the sealing interface between ZnO‐containing glass‐ceramics and Crofer 22 APU, held in air at 700°C for 1400 h. Moreover, the glass‐ceramics show considerable electrical stability in oxidizing and reducing atmospheres. The reported results support the suitability of prepared glass‐ceramics as sealing materials for SOFC applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tuning the Interfacial Reaction Between Bismuth‐Containing Sealing Glasses and Cr‐Containing Interconnect: Effect of ZnO

et al. 2015

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“…The YASZ-4 glass discussed above displayed a better sealing characteristic compared with YAS1-50 glass (40 m% SiO 2 , 16 m% Al 2 O 3 , 24 m% Y 2 O 3 and 20 m% ZnO) prepared in a previous study, which displayed a leak rate of 0.028 sccm/cm during the first three cycles [28]. The improvement in this study was achieved by partial substitution of Y 2 O 3 with La 2 O 3 and NiO in the YAS1-50 glass in which the La 2 O 3 was used to increase its CTE from 8.2 Â 10 À6 to 8.4 Â 10 À6 K À1 , and NiO was used to enhance its adhesion on SUS430.…”

Section: Resultsmentioning

confidence: 74%

“…In our previous study, SiO 2 eAl 2 O 3 eY 2 O 3 eZnO glass was found to be a promising material for use as a sealant of intermediate temperature SOFCs (IT-SOFCs) [28]. However, several improvements, including enhancing the adhesion between the glass and steel and increasing the CTE, have to be achieved in order to withstand a long high-temperature operation.…”

Section: Introductionmentioning

confidence: 99%

Effects of La2O3, Nd2O3, NiO and CoO additions on the characteristics of SiO2–Al2O3–Y2O3–ZnO glass seals for intermediate temperature solid oxide fuel cells

Wang

Hsu

Hsieh

2015

International Journal of Hydrogen Energy

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“…The CTE of glass sealant was 11.64 Â 10 À6 C À1 between 50 C and 500 C. The glass sealant is found to be well adhered with other cell components, such as electrolytes and stainless steel, at an optimum sealing temperature of 800 C. The glass sealants appeared to be a promising sealant for SOFCs due to its thermal and adhesion properties. Wang et al 225 prepared SiO 2 -Al 2 O 3 -Y 2 O 3 -ZnO glass sealants as potential materials for SOFCs. The thermal stability, adhesion, and sealing properties of the glass systems were estimated with respect to SUS430 stainless steel.…”

mentioning

confidence: 99%

Review on silicate and borosilicate‐based glass sealants and their interaction with components of solid oxide fuel cell

Singh

Walia

2021

Intl J of Energy Research

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A lot of research is going on in the field of glass science to commercialize solid oxide fuel cells (SOFCs). Still, it is a big challenge to develop appropriate glass sealants for a longer duration and sustaining in the operating conditions of this power source. Mixed alkaline earth metal oxides containing silicate or borosilicate glasses could be most suitable as a rigid glass sealant in SOFCs in comparison with borate-and phosphate-based glass sealants. In this review article, the need for the sealants in the planar design of SOFCs, the effect of different modifiers, and intermediate oxides on sealing properties of glasses and glassceramics, particularly, silicate-and borosilicate-based glass sealants have been reviewed. Interaction study of glass sealants with common electrolytes and interconnect materials is also overviewed in this article. In addition to these, future perspectives and suggestions for suitable seal development are also proposed. Novelty statementThis review article is related to the glass sealants for a highly efficient and environment friendly solid oxide fuel cell energy conversion device. Still, it is a big challenge to develop an appropriate sealant to commercialize this energy device. This article provides the researchers with not only progress and latest development in the field of glass sealants but also suggestion and future prospects to develop the sealants.

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SiO2–Al2O3–Y2O3–ZnO glass sealants for intermediate temperature solid oxide fuel cell applications

Cited by 19 publications

References 45 publications

Tuning the Interfacial Reaction Between Bismuth‐Containing Sealing Glasses and Cr‐Containing Interconnect: Effect of ZnO

Tuning the Interfacial Reaction Between Bismuth‐Containing Sealing Glasses and Cr‐Containing Interconnect: Effect of ZnO

Effects of La2O3, Nd2O3, NiO and CoO additions on the characteristics of SiO2–Al2O3–Y2O3–ZnO glass seals for intermediate temperature solid oxide fuel cells

Review on silicate and borosilicate‐based glass sealants and their interaction with components of solid oxide fuel cell

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