How to obtain high strength while remain the good shielding performance of MXene film is a big challenge, which limits its further application. Herein, we report on fabrication of mechanically strong and high-performance EMI shielding Ti₃C₂Tx composite film by incorporating of poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT/PSS) and then treatment with concentrated sulfuric acid to remove the insulating PSS. By introducing of 30 wt% PEDOT:PSS into Ti₃C₂Tx film and with acid post-treatment, the EMI SE of composite film with thickness of ∼ 6.6 μm is up to 40.5 dB while the tensile strength is 38.5 ± 2.9 MPa and the increment in tensile strength is as high as 155% when compared to that of pristine Ti₃C₂Tx film. It achieves a good balance between shielding performance and mechanical property, which has not been achieved in reported literatures. The combination of mechanical and shielding performances portfolio outperforms the counterpart of other polymers composite filled with MXene.

如何在获得高强度的同时又保持MXene膜良好的屏蔽性能是一个巨大的挑战，这限制了它的进一步应用。在这里，我们报道了通过结合聚（3,4-乙撑二氧噻吩）/聚（苯乙烯磺酸盐）（PEDOT / PSS）然后用浓硫酸处理来制造机械强度高，性能优良的EMI屏蔽Ti ₃ C ₂ T x复合膜的方法。酸去除绝缘的PSS。通过将30 wt％的PEDOT：PSS引入Ti ₃ C ₂ T x中薄膜并经酸后处理，厚度约为6.6μm的复合薄膜的EMI SE高达40.5 dB，而抗张强度为38.5±2.9 MPa，与之相比，抗张强度的增加高达155％原始的Ti ₃ C ₂ T x膜。它在屏蔽性能和机械性能之间达到了良好的平衡，这在报道的文献中还没有实现。机械性能和屏蔽性能的组合优于其他填充有MXene的聚合物复合材料。