The Encyclopedia of Electrochemical Power Sources is a truly interdisciplinary reference for those working with batteries, fuel cells, electrolyzers, supercapacitors, and photo-electrochemical cells. With a focus on the environmental and economic impact of electrochemical power sources, this five-volume work consolidates coverage of the field and serves as an entry point to the literature for professionals and students alike. It covers the main types of power sources, including their operating principles, systems, materials, and applications. It serves as a primary source of information for electrochemists, materials scientists, energy technologists, and engineers. It incorporates nearly 350 articles, with timely coverage of such topics as environmental and sustainability considerations.