![]() So far, graphene, MoS 2, CNT, SiC, and MXene have been recognized as representative candidate materials for high-efficiency EM absorbers. Therefore, how to effectively absorb EM radiation and meet the requirements of EM wave absorbing materials has attracted widespread attention. Although there are many traditional EM waves absorbing materials, most of them do not meet the requirements of lightweight, thin matching thickness, wide effective absorption bandwidth (EAB), and strong absorption capacity. Accordingly, the demand for EM wave absorbing materials has become increasingly urgent. The vigorous development of the 5G era, especially the development of next-generation electronic devices, network communications, and artificial intelligence, has provided high efficiency and convenience for our daily lives while bringing serious electromagnetic (EM) pollution. This work provided a new development strategy for the design of multifunctional and efficient electromagnetic wave absorbing materials. In addition, the Ni/MXene-MF endows low density, excellent heat insulation, infrared stealth, and flame-retardant functions. Strong electromagnetic wave absorption is attributed to the three-dimensional magnetic/conductive networks, which provided excellent impedance matching, dielectric loss, magnetic loss, interface polarization, and multiple attenuations. Remarkably, the Ni/MXene-MF achieves a minimum reflection loss (RL min) ofโโโ62.7 dB with a corresponding effective absorption bandwidth (EAB) of 6.24 GHz at 2 mm and an EAB of 6.88 GHz at 1.8 mm. Here, the magnetized Ni flower/MXene hybrids are successfully assembled on the surface of melamine foam (MF) through electrostatic self-assembly and dip-coating adsorption process, realizing the integration of microwave absorption, infrared stealth, and flame retardant. The development of multifunctional and efficient electromagnetic wave absorbing materials is a challenging research hotspot.
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