The book Advances in Electrocatalysis offers an exploration of one of the most dynamic fields in modern chemistry and energy science. The scientific basis of electrocatalysis, as the interface between catalysis and electrochemistry, and its links to practical applications of current interest are presented. It also highlights how electrocatalysis underpins clean energy production, environmental protection, and sustainable chemical synthesis. From mechanistic insights into electrochemical reactions to the design of advanced catalytic materials and electrodes, the book presents cutting-edge approaches and applications that define the current landscape of the field. Key topics include catalytic materials and the electrochemical processes that drive electrocatalysis, as well as emerging methods for electrode fabrication by depositing metal nanoparticles on oxide or carbon supports. These methods have applications in clean energy technologies, such as water splitting, CO2 reduction, and fuel cell power generation. Written for researchers, engineers, and graduate students, the book Advances in Electrocatalysis provides both a reference for cutting-edge developments and a guide to future directions in sustainable energy research. This book captures the excitement, challenges, and transformative potential of electrocatalysis in addressing today's global demand for energy and chemical compounds from renewable resources.