Conductive WS2-NS/CNTs hybrids based 3D ultra-thin mesh electromagnetic wave absorbers with excellent absorption performance

By Deqing Zhang, Honghan Wang, Junye Cheng, Changyu Han, Xiuying Yang, Jing Xu, G. Shan, G. Zheng, M. Cao. 2020

155 citations recorded by the source corpus.

Abstract Herein, ultra-thin tungsten disulfide nanosheets/carbon nanotubes (WS2-NS/CNTs) hybrids were successfully synthesized by using a one-step hydrothermal method. The WS2-NS is evenly grown on the surfaces of CNTs, leading to a remarkable three-dimensional (3D) heterostructure. Outstanding electromagnetic wave absorption performance of the WS2-NS/CNTs hybrids can be achieved by tuning the amount of CNTs. The minimum reflection loss can reach up to −51.6 dB at 14.8 GHz, and the effective absorption bandwidth is 5.4 GHz for the hybrids with a thickness of 1.95 mm. Comparison of the results with those of simple mixtures of WS2-NS and CNTs prepared by using ultrasonic methods indicates that the absorption performance of the optimized WS2-NS/CNTs hybrids are closely related to that of the 3D mesh conductive network constructed by the addition of CNTs and the synergistic effect of WS2-NS and CNTs in the hybrids. These WS2-NS/CNTs hybrids open a new avenue for the development of electromagnetic wave absorbers with extraordinary absorption performance, light weight, small thickness, broad absorption bandwidth, and low cost.

Subfields: Aerospace Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/f4243e5d8bffb8b7a88fe393eca9bfbdd6a49414