Magnetic Interacted Interaction Effect in MXene Skeleton: Enhanced Thermal‐Generation for Electromagnetic Interference Shielding

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Abstract
With the rapid advancements of portable and wearable equipment, high‐efficiency electromagnetic interference (EMI) shielding materials are highly entailed to eliminate radiated electromagnetic pollution. Herein, by assembling hexagonal SrFe12O19 flakes into a Ti3C2Tx MXene/MWCNT substrate, a magnetized Ti3C2Tx‐based film is successfully fabricated by a facile filtration approach. Carbon nanotubes are used as isolation agents to realize the submicroscopic dispersion of MXene and SrFe12O19. The obtained MXene/MWCNTs/SrFe12O19 film shows a high electrical conductivity of 438 S cm−1 and an excellent EMI shielding effectiveness of 62.9 dB in X‐band at a thickness of only 40 µm. Benefiting from a strong magnetic response ability and an expanded magnetic coupling space, hexagonal SrFe12O19 sheets can efficiently consume incident magnetic field energy by domain wall migration and the ferromagnetic resonance effect. Boosted EMI shielding performance can be achieved by improving the magnetic loss in the Ti3C2Tx MXene/MWCNTs/SrFe12O19 film, preventing the secondary reflection of electromagnetic waves. Meanwhile, magnetized MXene‐based films display the freestanding and flexible features and are suitable for installation in electric devices. It is anticipated that this strategy offers new ideas for designing EMI shielding films and in broadening potential utility of MXene‐based materials.
Funding Information
  • National Natural Science Foundation of China (51725101, 11727807, 51672050, 61790581, 22088101)

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