Electrochemical energy storage devices are the prime interest of researchers and students. This book provides a comprehensive introduction to nanomaterials and their potential applications specifically for electrochemical devices (rechargeable batteries, supercapacitors and so forth) in a coherent and simple manner. It covers fundamental concepts of nanomaterials, chemical and physical methods of synthesis, properties, characterization methods, and related applications.  Features: Introduces the evolution of nanoparticles in electrochemical energy storage devices. Provides the detailed information on step-by-step synthesis of nanoparticles. Discusses different characterization methods (structural, electrical, optical, and thermal). Includes the use of nanoparticles in various electrochemical devices. Aims to bridge the gap between the material synthesis and the real application. This book aims at Senior Undergraduate/Graduate students in Material Chemistry, Electrochemistry and Chemical Engineering, and Energy Storage.