Chapter 1 Graphene, Hexagonal Boron Nitride, and Heterostructure: Properties and Applications 1.1 Introduction to the 2D materials 1.1.1 Introduction to graphene 1.1.2 Introduction to graphene-like 2D crystals-hexagonal boron nitride 1.1.3 Introduction of graphene/h-BN,a 2D composite 1.2 Graphene 1.2.1 Structure of graphene 1.2.2 Preparation of graphene 1.2.3 Physical properties of graphene 1.2.4 Raman spectrum of graphene 1.3 2D h-BN 1.3.1 Structureof h-BN 1.3.2 Preparation of h-BN 1.3.3 Physical properties of h-BN 1.3.4 Raman spectroscopy of h-BN 1.4 Composite structure of graphene/h-BN 1.4.1 Research rise and process of graphene/h-BN heterojunction structure 1.4.2 Composite mode structure of graphene/h-BN 1.4.3 Preparations of graphene/h-BN heterostructures 1.4.4 The properties of graphene/h-BN heterostructures 1.4.5 Potential applications of graphene/h-BN heterostructure 1.5 Summary and outlook References Chapter 2 Electrical Properties and Recent Electrical Applications of Graphene, h-BN, Graphene/h-BN Heterostructures 2.1 Graphene 2.1.1 The structure of 2D graphene 2.1.2 The electronic structure of graphene 2.1.3 The electronic property of graphene 2.1.4 The recent application of graphene in electronic property 2.2 h-BN 2.2.1 The structure of 2D h-BN 2.2.2 The electronic structure of h-BN 2.2.3 The electronic property of h-BN 2.2;4 The recent electrical application of h-BN 2.3 Graphene/h-BN heterostructures 2.3.1 The structure of graphene/h-BN heterostructures 2.3.2 The electronic structure of graphene/h-BN heterostructures 2.3.3 The electronic properties of graphene/h-BN 2.3.4 The recent application progress of graphene/h-BN heterostructure in electronics 2.4 Summary and outlook References …… Chapter 3 Optical, Photonic and Optoelectronic Properties of Graphene, h-NB and Their Hybrid Materials Chapter 4 Optoelectronic Properties and Applications of Graphene-Based Hybrid Nanomaterials and van der Waals Heterostructure Chapter 5 Magnetics and Spintronics of 2D Graphene/h-BN Composite Materials Chapter 6 The Thermal and Thermoelectric Properties of In-Plane C-BN Hybrid Structures and Graphene/h-BN van der Waals Heterostructures Chapter 7 The Thermal, Electrical, and Thermoelectric Properties of Graphene Nanomaterials Chapter 8 Properties and Applications of New Superlattices: Twisted Bilayer Graphene Chapter 9 Two Dimensional Black Phosphorus: Physical Properties and Applications Chapter 10 Graphitic Carbon Nitride Nanostructures Acknowledgements