This book provides an introduction to 2D materials, their current fabrication techniques, and characterization. It focuses on the wide applications of 2D materials in electromagnetic shielding applications, high power sensors, electrochemical energy storage, supercapacitors, photo detectors, medical and biomedical fields and energy storage devices. 2D materials such as graphene, transition metal dichalcogenides (TMD), MXenes and so on, have attracted a lot of attention because of their ability to be integrated in various functional devices.