Abstract
Solid oxide fuel cells (SOFC), which are green electrochemical devices, transform directly chemical energy of fuel to electricity, and striking heat energy by using solid fuels as electrolyte [1-3]. One of the essential problems for SOFC is to mix the gases, which used in anode and cathode, reacting electrochemically at high temperature before the reaction and/or the gas infiltration to outside of SOFC. It makes security problem and low efficiency. To use safe sealing material for SOFC is very important due to high operating temperature such as 600-1000°C. The actual studies have shown that the sealing materials produced from glass-ceramics have the greatest potential about sealing. Glass-ceramics are polycrystalline materials produced by controlled crystallization of glass that is suitable for crystallization. Glass-ceramics that can be produced by using various compositions are ideal sealing material in terms of accordance between thermal expansion coefficients of SOFC components and glass-ceramic, high temperature strength and corrosion resistance. However, there are also problems resulting from glass-ceramic sealants in SOFC. Nowadays, the glass-ceramics including BaO and SrO are used in commercial glassceramic sealants for SOFC. In the operation condition of SOFC, BaCrO4 and/or SrCrO4 phases can form because of different thermal expansion coefficient, when the glassceramics including BaO and SrO are combined with Crofer Apu 22 as interconnect material. This situation may cause decrease in bonding strength, sealing failure and crack formation. In the current study, the glass-ceramic compositions not including BaO and SrO were prepared for sealant material of SOFC and interface characteristics with CroferAPU22 were investigated. The results indicated that the glass-ceramic materials exhibiting good bonding with CroferAPU22 and not containing chromate phase can be produced by natural rocks.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Turkish Chemical Society Section A Chemistry
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
