Confinedly growing and tailoring of Co <sub>3</sub> O <sub>4</sub> clusters-WS <sub>2</sub> nanosheets for highly efficient microwave absorption
Deqing Zhang, Tingting Liu, Min Zhang, Huibin Zhang, Xiuying Yang, Junye Cheng, Jin‐Cheng Shu, Lin Li, Mao‐Sheng Cao
Abstract
Abstract Electromagnetic (EM) wave absorbing materials have been a research hotspot in materials science and related technical fields in recent years. Finding lightweight, efficient, and broadband electromagnetic wave absorbing materials has always been a very challenging subject. Herein, we successfully prepared Co 3 O 4 -WS 2 hybrid nanosheets with heterostructures, which excellent combine the advantages of magnetic property of Co 3 O 4 and dielectric property of WS 2 . By the electromagnetic synergy effect, maximum RL is up to −61.1 dB at 1.9 mm, and the bandwidth exceeds 5 GHz. Such highly efficient microwave absorption is attributed to not only the electromagnetic synergy effect, but the dipole polarization as well as conduction loss. These results show that the obtained Co 3 O 4 -WS 2 is an excellent EM wave absorbing material and can be used as a candidate for advanced EM wave absorbing materials in the fields such as commerce, military and aerospace in future.