Title

Intermediate-Temperature SOFC Electrolytes

Publication Title

Fuel Cell Technologies: State and Perspectives

Publication Date

2005

Document Type

Article

DOI

10.1007/1-4020-3498-9_3

Keywords

zirconia, ceria, lanthanum gallate, intermediate temperature, SOFC

Disciplines

Chemical Engineering

Abstract

The electrolyte for solid oxide fuel cells (SOFC’s) must be stable in both reducing and oxidizing environments and have sufficient ionic, as well as low electronic, conductivity at the operation temperature. Present SOFC’s have extensively used stabilized zirconia, especially yttria stabilized zirconia, as the electrolyte. However, oxide ion conductors, such as doped ceria and perovskite-type oxides, have also been proposed as the electrolyte materials for SOFC’s, especially for reduced-temperature of operation (600°C to 800°C), now known as intermediate-temperature solid oxide fuel cells (IT-SOFC).