Promising Ti3C2Tx MXene/Ni Chain Hybrid with Excellent Electromagnetic Wave Absorption and Shielding Capacity

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Abstract
Electromagnetic (EM) pollution affecting people’s normal lives and health has been attracted considerable attention in current society. In this work, a promising EM wave absorption and shielding material, MXene/Ni hybrid, composing of one-dimensional (1D) Ni nano-chains and two-dimensional (2D) Ti3C2Tx nanosheets (MXene), is successfully designed and developed. As expected, excellent EM wave absorption and shielding properties are obtained and controlled by only adjusting MXene content in hybrid. A minimum reflection loss (RL) of -49.9 dB is acquired only with a thickness of 1.75 mm at 11.9 GHz when MXene content is 10 wt%. Further increasing MXene content to 50 wt%, the optimal EM shielding effectiveness (SE) reaches to 66.4 dB with an absorption effectiveness (SEA) of 59.9 dB. Mechanism analysis reveals that the excellent EM wave absorption and shielding performances of hybrid are contributed to synergistic effect of conductive MXene and magnetic Ni chains, by which, the dielectric property and electromagnetic loss can be easily controlled to obtain appropriate impedance matching condition and well EM wave dissipation ability. This work provides a simple but effective route to develop MXene-based EM wave absorption and shielding materials. A universal guideline of designing the absorbing and shielding materials for future is also proposed.
Funding Information
  • China Postdoctoral Science Foundation (2018M642781)
  • National Natural Science Foundation of China (U1704162, 51573170)

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