There are a large number of books available on fuel cells; however, the majority are on specific types of fuel cells such as solid oxide fuel cells, proton exchange membrane fuel cells, or on specific technical aspects of fuel cells, e.g., the system or stack engineering. Thus, there is a need for a book focused on materials requirements in fuel cells. Key Materials in High-Temperature Fuel Cells is a concise source of the most important and key materials and catalysts in high-temperature fuel cells with emphasis on the most important solid oxide fuel cells. A related book will cover key materials in low-temperature fuel cells. The two books form part of the ?Materials for Sustainable Energy & Development? series. Key Materials in High-Temperature Fuel Cells brings together world leaders and experts in this field and provides a lucid description of the materials assessment of fuel cell technologies. With an emphasis on the technical development and applications of key materials in high-temperature fuel cells, this text covers fundamental principles, advancement, challenges, and important current research themes. Topics covered include: advanced anodes for hydrogen and hydrocarbon fuels; oxide ion conducting materials for electrolytes; metallic interconnect materials of solid oxide fuel cells; materials and design for micro-SOFCs; advanced cathodes of solid oxide fuel cells; materials and processing for metal-supported solid oxide fuel cells; degradation and poisoning issues of electrode materials of solid oxide fuel cells, status and challenges in molten carbonate fuel cells; and key materials in direct carbon and phosphoric acid fuel cells This book is an essential reference source for researchers, engineers and technicians in academia, research institutes and industry working in the fields of fuel cells, energy materials, electrochemistry and materials science and engineering.