Toward the application of electromagnetic wave absorption by two-dimension materials

Searching for the superior electromagnetic wave absorption materials (EMWAMs) has sparked giant interest owing to the increasingly serious electromagnetic wave (EMW) pollution and the boosting development of stealth fighters. Among numerous EMW absorbing materials, the two-dimension (2D) materials with unique layered morphology, low mass density, excellent processability and controllable electromagnetic parameters stand out for the lightweight, high-efficiency EMW absorbing materials. Here, we will summary the state-of-art progress on the 2D materials for EMWAMs, including graphene, MoS₂, h-BN, g-C₃N₄, LDH (layered double hydroxides) and others. Meanwhile, the relevant preparation synthesis, absorption mechanisms and performance comparisons are presented. Specially, with the aim to obtain the superior absorption ability in term of broad effective absorption bandwidth (EAB), strong absorption intensity and thin thickness, the two key factors that significantly influence the ultimate performance, namely, good impedance matching and strong attenuation capacity, have been considered all the time. Finally, the bottlenecks and outlooks are further put forward on the basis of its current development.