NiFe\nLDH/MXene Derivatives Interconnected with Carbon\nFabric for Flexible Electromagnetic Wave Absorption

Abstract

Cross-linking\nnetwork structures are critical to construct flexible\nand lightweight electromagnetic (EM) wave absorbers, for which effective\nregulation of the EM parameters is essential. Herein, a versatile\nstrategy has been developed by interconnecting carbon fibers with\nNiFe-layered double hydroxide (NiFe LDH)/MXene derivatives. The large-sized\nflaky morphology and conductive nature of the interconnectors induce\nthe percolation effect in the fabric networks with ultralow addition.\nAs such, efficient adjustment of the EM parameters can be achieved\nby tuning the content of the interconnectors around the percolation\nthreshold, giving rise to an optimal reflection loss (RL) of −58.0\ndB and a wide effective absorption band (EAB) of 7.0 GHz at a thickness\nof 2.5 mm under the incorporation of 7.0 wt % NiFe LDH/MXene. This\nwork provides insights on constructing percolation networks and effective\nmanipulation of electronic and magnetic properties, which can be extended\nto various areas such as sensing, catalysis, and energy storage.