This book is a collection of peer-reviewed best-selected research papers presented at the National Conference on Energy Materials and Devices (E-MAD 2022), organized by the Indian Institute of Technology Jodhpur, India, during 16–18 December 2022. The book focusses on the current state-of-the-art research and development in the field of lithium and beyond lithium-ion batteries as electrochemical energy storage devices for sustainable development to meet the energy storage needs. This includes the materials' design using computational approaches together with experimental advances targeting the next-generation energy storage materials and devices such as photo rechargeable batteries. In addition, the proceedings also focus simultaneously on green hydrogen energy generation, storage, and integration in fuel cells. It includes the catalytically active nanoengineered materials for hydrogen generation, functionalized hydrides and their composites for enhanced hydrogen storage together withtheir possible integration in fuel cells for their direct energy generation applications.