This book examines in detail the application and theory of slicene-based layered materials, offering a new perspective on up-to-date mainstream theoretical and experimental research. It includes a wide range of layered systems, and takes into account the critical factors involved, such as the group-IV monoelements, stacking configurations, layer numbers, Moire superlattices. Multiorbital chemical bondings and spin-orbit coupling are discussed in detail, and the theoretical framework with first-principles calculations are developed to thoroughly describe the physical, chemical, and material phenomena and concise images explain the fundamental properties. The book is an invaluable guide for researchers studying silicene-based materials.