This book is a detailed and comprehensive medium helping students and researchers to understand electrolytic synthesis. The three most important applications of technological electrolysis - water electrolysis (hydrogen production), industrial electrolysis and environmental electrolysis have been described in this book. Various international experts in different fields of electrolysis have contributed in this book and the content not only presents reviews and literature references, but also inferences from original results. This book will prove to be a valuable source of information to the readers and the science of electrolysis will reveal surprising discoveries in the future, if current progress moves ahead at the right pace.