Design of BaZr0.8Y0.2O3–δ Protonic Conductor to Improve the Electrochemical Performance in Intermediate Temperature Solid Oxide Fuel Cells (IT-SOFCs)
✍ Scribed by A. D'Epifanio; E. Fabbri; E. Di Bartolomeo; S. Licoccia; E. Traversa
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 801 KB
- Volume
- 8
- Category
- Article
- ISSN
- 1615-6846
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✦ Synopsis
The standard operating temperature for conventional solid oxide fuel cells (SOFCs) based on anionic electrolytes is 1,000 °C, resulting in high costs, due to the need of using ceramic interconnects, and materials degradation. Reduction of operating temperatures would allow the use of low cost and durable sealant and interconnects [1]. Operating SOFCs below 800 °C (intermediate temperature, IT) would also yield faster start-up times for portable devices, increase efficiency and stability and diminish excessive power consumption for reaching and operating SOFCs at high temperatures. This has driven the development of IT-SOFCs in recent years. One major issue in the improvement of the performance of IT-SOFCs is the development of a solid oxide electrolyte with sufficiently high ionic conductivity [2,3]. Most of the studies are based on doped ceria and lanthanum gallate as oxygenion conducting electrolytes [3,4].
In recent years, high temperature proton conductors (HTPCs) are gaining interest due to their potential application as electrolytes in SOFCs, hydrogen separation membranes and hydrogen sensors [5][6][7][8]. The potential use of HTPCs in fuel cells presents important advantages with