Encyclopedia of Energy Storage, Four Volume Set provides a point-of-entry, foundational-level resource for all scientists and practitioners interested in this exciting field. All energy storage technologies - including both their fundamentals, materials and applications – are covered, with contributions written and expertly curated by some of the world’s leading scientists. The result is a comprehensive collection of the most important data, concepts and studies published in the field. Clearly structured into eight thematic sections, the book's coverage includes storage related to thermodynamics, thermal energy, thermal mechanical and mechanical energy storage, electrochemical energy storage and batteries, hydroenergy, and finally, capacitors/supercapacitors. This work will be an invaluable tool for researchers in the fields of materials science, energy, engineering, chemistry and physics, and for readers in both industry and academia. Given the rapid expansion of this field and of its literature, this timely compilation of definitive reviews is especially important.