This book presents and summarizes new synthetic strategies and multi-functional applications of collagen-derived materials in electrochemical energy storage and conversion. Through easily-comprehensible illustrations and images, the book presents basic knowledge for collagen-derived materials (including gelatin and collagen-derived carbons) and their typical synthesis and applications, thus enabling students and new researchers to obtain a thorough understanding of different materials and corresponding application areas. This book also serves as an important reference book for scientists and engineers in different research fields. It presents the up-to-date ideas and strategies for the synthesis and characterization of advanced collagen-derived materials, as well as multi-functional applications (especially in energy-related areas).