The considerable interest in graphene and 2D materials is sparking intense research on layered materials due to their unexpected physical, electronic, chemical, and optical properties. After a brief introduction to layered materials, the chapters of this book gather various fascinating topics including electrocatalysis for fuel cells, lithium-ion and sodium-ion batteries, photovoltaic devices, thermoelectric devices, supercapacitors and water splitting. With contributions from key researchers, this book will be of interest to students, researchers and engineers worldwide who want a basic overview of the latest progress and future directions.