This book provides a comprehensive overview of solid oxide fuel cells (SOFCs), covering their fundamentals, design, and applications. It is edited by Subhash C. Singhal and Kevin Kendall, and includes contributions from various experts in the field. The book is structured into 13 chapters, starting with an introduction to SOFCs, followed by a historical perspective, thermodynamics, electrolytes, cathodes, anodes, interconnects, cell and stack designs, electrode polarizations, electrode testing, modeling of cells and systems, fuels and fuel processing, and finally, systems and applications. The first chapter introduces the background, history, and key components of SOFCs, including electrolyte fabrication, electrode materials, and cell designs. Chapter 2 traces the development of SOFCs from early gas cells to modern fuel cells. Chapter 3 discusses the thermodynamic principles of SOFCs, including their efficiency and hybrid systems. Chapter 4 explores various electrolyte materials and their fabrication techniques. Chapters 5 and 6 focus on cathodes and anodes, detailing their properties, behavior, and fabrication. Chapter 7 covers interconnect materials and their compatibility with electrodes. Chapters 8-10 discuss cell and stack designs, electrode polarization, and testing methods. Chapter 11 presents modeling techniques for SOFCs at different levels, from continuum to molecular. The final chapters address fuel processing, system designs, and applications of SOFCs in various energy markets. The book concludes with a summary and references, providing a valuable resource for researchers and engineers working in the field of SOFC technology.This book provides a comprehensive overview of solid oxide fuel cells (SOFCs), covering their fundamentals, design, and applications. It is edited by Subhash C. Singhal and Kevin Kendall, and includes contributions from various experts in the field. The book is structured into 13 chapters, starting with an introduction to SOFCs, followed by a historical perspective, thermodynamics, electrolytes, cathodes, anodes, interconnects, cell and stack designs, electrode polarizations, electrode testing, modeling of cells and systems, fuels and fuel processing, and finally, systems and applications. The first chapter introduces the background, history, and key components of SOFCs, including electrolyte fabrication, electrode materials, and cell designs. Chapter 2 traces the development of SOFCs from early gas cells to modern fuel cells. Chapter 3 discusses the thermodynamic principles of SOFCs, including their efficiency and hybrid systems. Chapter 4 explores various electrolyte materials and their fabrication techniques. Chapters 5 and 6 focus on cathodes and anodes, detailing their properties, behavior, and fabrication. Chapter 7 covers interconnect materials and their compatibility with electrodes. Chapters 8-10 discuss cell and stack designs, electrode polarization, and testing methods. Chapter 11 presents modeling techniques for SOFCs at different levels, from continuum to molecular. The final chapters address fuel processing, system designs, and applications of SOFCs in various energy markets. The book concludes with a summary and references, providing a valuable resource for researchers and engineers working in the field of SOFC technology.