石墨烯基复合吸波材料的最新研究进展

Latest research progress of graphene-based composite absorbingmaterials

随着现代通信技术的飞速发展和电子设备的广泛应用,电磁污染问题日益严重,因此开发质量轻、厚度薄、吸收强、有效吸收频带宽的吸波材料显得尤为重要。石墨烯存在无磁性、阻抗匹配水平低等不足,单独使用时无法同时满足吸波材料“薄、轻、宽、强”的要求。文章首先介绍了石墨烯一元吸波材料的发展现状,以及石墨烯与其他损耗型材料复合可以构筑具有多样微观结构、多元协同损耗机制的轻质复合材料,实现高强与宽频电磁波吸收的研究进展,然后论述了石墨烯基二元、三元、四元复合吸波材料的最新研究,展望了石墨烯基复合吸波材料未来的发展方向。

With the rapid development of modern communication technology and the wide application of electronic equipment,electromagnetic wave pollution is becoming increasingly severe.Therefore,the fabrication of microwave absorption materials with light weight,thin thickness,strong absorption and broad effective absorption band has been an urgency.Graphene has the advantages of light weight,large specific surface area and high conductivity,but also has the disadvantages of non-magnetism and low impedance matching level.When used alone,it cannot meet the requirements of absorbing materials of"thin,light,wide and strong"at the same time.Graphene is often combined with other loss materials to build lightweight composites with diverse microstructures and multiple cooperative loss mechanisms to achieve efficient and broadband electromagnetic waves absorption.In this paper,the development status of graphene absorbing materials has been briefly introduced,and the latest research progress of graphene-based binary,ternary and quaternary composite absorbing materials has been discussed in detail.Finally,the future development directions of graphene-based composite absorbing materials have been prospected.