Nanomaterials for Electrochemical Energy Storage: Challenges and Opportunities, Volume Nineteen provides an objective, realistic overview on the use of nanomaterials for various rechargeable electrochemical energy storage systems. It delivers a clear message on opportunities and critical aspects for the application of nanomaterials in currently available commercial devices (i.e., lithium-ion, supercapacitors, lithium-ion capacitors) and in the most promising battery technologies (e.g., lithium-sulphur, sodium-ion, metal-air, multivalent-ion batteries, dual-ion). In addition, it covers the use of nanomaterials on two of the most promising research pathways, specifically solid electrolytes and nanostructured alkali metal interfaces. Finally, the book outlines future use scenarios in developed and industrial applications. Nanomaterials have been considered as the “holy grail? of electrochemical energy storage during recent decades. Compounds and composites made of nanomaterials have opened unexpected research avenues, allowing entirely new classes of materials to be explored.