Improving the sealing performance of glass-ceramics for SOFCs applications by a unique ‘composite’ approach: A study on Na2O-SiO2 glass-ceramic system

Lin, Dewei; Tan, Shengwei; Lin, Fei; Dong, Zhengwei; Yan, Jiajia; Tang, Dian; Yang, Hsiwen; Chen, Kongfa; Zhang, Teng

doi:10.1016/j.jeurceramsoc.2018.06.005

Cited by 14 publications

(5 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the Y2O3-Al2O3-B2O3-SiO2 system [26], we have used a fairly well-controlled composition ratio with the focus of observation on the coefficient of thermal expansion [CTE]. In the Na2O-SiO2 system [38,39] with a single composition formulation, the sample material is differentiated by a variety of treatments to obtain the value of the coefficient of thermal expansion (CTE), Glass Transition (Tg) and Deformation Temperature (Td). The material formulation on BaO-CaO-Al2O3-B2O3-SiO2 (BCABS) with additional material H3BO3., BaCO3, CaCO3, Na2CO3 [40] get the value of the coefficient of thermal expansion (CTE), Transition Glass (Tg) and Melting Temperature (Tc).…”

Section: Resultsmentioning

confidence: 99%

Progress in Glass-Ceramic Seal for Solid Oxide Fuel Cell Technology

Gunawan

Sulistyo

Setyawan³

2021

ARFMTS

View full text Add to dashboard Cite

Solid oxide fuel cells (SOFCs) have emerged as promising energy conversion devices nowadays. SOFC consists of several components such as cathode, anode, electrolyte, interconnects, and sealing materials. In planar SOFC stack construction, the sealant and interconnection functions play an important role. Glass and ceramics are quite popularly used as SOFC sealing materials to achieve several functions including preventing leakage of fuel and oxidants in the stack and electrically isolating cells in the stack. In this review, material preparation, material composition, ceramic properties especially thermal properties are compared from various systems that have been developed previously. The main challenges and complexities in the functional part of SOFC sealants include: (i) chemical incompatibility and instability in the oxidizing and reducing environment by adjusting the value of the thermal expansion coefficient (CTE) with the interconnecting material during SOFC operation, and (ii) insulation of oxidizing fuels and gases by matching CTE anode and cathode. Also, the sealant glass transition determines the maximum permissible working temperature of the SOFC. The choice of method and analysis will provide data on various ceramic attributes. The search for thermal attributes consisting of Glass transition (Tg), Deformation temp (Td), Crystallization temp (Tx), Melting pt (Tm) became a focus on SOFC sealant development.

show abstract

Section: Resultsmentioning

confidence: 99%

Progress in Glass-Ceramic Seal for Solid Oxide Fuel Cell Technology

Gunawan

Sulistyo

Setyawan³

2021

ARFMTS

View full text Add to dashboard Cite

show abstract

“…These glasses are called self-healing or smart glasses. [48][49][50] If the sealing glass does not fully crystallize, then the cracks that form because of thermal cycling are capable of self-healing. 51 In self-healing glasses, the T g is well below the SOFC operating temperature, that is, 800 C. In this concept, the constituents of glass sealants should have been selected in such a way that the T g of the developed glass sealant must be well below the SOFC operational temperature.…”

Section: Compliant Glass Sealantsmentioning

confidence: 99%

“…Some of the glasses may heal these cracks during the thermal cycle. These glasses are called self‐healing or smart glasses 48–50 . If the sealing glass does not fully crystallize, then the cracks that form because of thermal cycling are capable of self‐healing 51 .…”

Section: Different Concepts Of Sealingmentioning

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

View full text Add to dashboard Cite

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.

show abstract

“…Test of mechanical strength, bending strenght, hardness, Young's modulus and flexural strength at high temperature on sealing materials [7,10,12]. Test material performance by measuring the glass transition point, softening point and peak crystallization temperature [6,7,8,10,12,19]. Testing morphological changes due to chemical and physical influences [8,9,10,16,17,19].…”

Section: Introductionmentioning

confidence: 99%

“…Test material performance by measuring the glass transition point, softening point and peak crystallization temperature [6,7,8,10,12,19]. Testing morphological changes due to chemical and physical influences [8,9,10,16,17,19]. Test the characteristics of electrical resistivity [6,11].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of RHA based ceramic membrane for gas leak testing in SOFC seals

Gunawan

Sulistyo²,

Setiawan³

2022

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Solid Oxide Fuel Cell (SOFC) systems show great potential in future power generation applications. SOFC has many advantages, including high efficiency, low emission, and flexible modular structure. SOFC is an electrochemical device that converts fuel into electricity directly. If hydrogen gas is used, it will produce electricity and waste products in the form of heat and water vapor. The complete SOFC module system consists of a furnace, cell stack, fuel and oxygen. Several parameters that affect SOFC performance are fuel flow rate, furnace temperature, cell material, and collector current. SOFC consists of anode, electrolyte, cathode, and current collector. These parameters have a correlation with each other in building a SOFC system, resulting in a good cell and optimal output voltage. SOFC based on electrolyte material yttria stabilized zirconia (YSZ) operates at working temperatures between 600 to 1,000°C, so all materials used must be able to withstand these temperatures. In the empirical case to separate each function of the components in the fuel cell, a sealant is needed. The sealant function prevents fuel and oxidant leakage in the stack and electrically isolates the cells in the stack. So the other sealant material requirements are to have thermal and chemical compatibility with other cell components, chemically and physically stable at high temperatures and have good mechanical strength. The composition of the material (RHA, CaO, Al2O3, MgO and BaO) with six formulations (F1-F6) which was determined as a gas leak test specimen through a synthesis process using the ball mill method for 12 hours resulted in a grain variation between 3.808 um – 19.631 um. The production of gas leak test specimens was successfully carried out by molding which was designed to be effective using a material weight of 1.5 grams with a 96% PVA binder as much as 20% by weight. The size of the specimen obtained in the form of a membrane with a thickness of 1-1.1mm. The preparation of the test material can be continued in the next gas leak test process.

show abstract

Improving the sealing performance of glass-ceramics for SOFCs applications by a unique ‘composite’ approach: A study on Na2O-SiO2 glass-ceramic system

Cited by 14 publications

References 63 publications

Progress in Glass-Ceramic Seal for Solid Oxide Fuel Cell Technology

Progress in Glass-Ceramic Seal for Solid Oxide Fuel Cell Technology

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

Preparation and characterization of RHA based ceramic membrane for gas leak testing in SOFC seals

Contact Info

Product

Resources

About