High-temperature solid-oxide fuel cells - New trends in materials research

The paper is an overview of basic solid-oxide fuel cells (SOFC) components in terms of their fundamental functional parameters such as chemical stability, transport as well as catalytic and thermomechanical properties under, operational conditions in a fuel cell. An interrelation between the defect structure of these materials related to oxygen nonstoichiometry and their electronic properties and catalytic activity is shown. A single-chamber fuel cell concept is also presented.