Fig. 4: Electrical properties and EMI SE of the MXene/liquid metal composite prepared by dry powder mixing (MLM-D) and solvent-assisted dispersion (MLM-S).
a Electrical conductivity of the MLM-D and MLM-S coatings with different MXene content. All values represent the mean ± standard deviation (SD) (n = 6). b EMI SE of the liquid metals (LM), MXene, the Ag nanosheets /liquid metal composite (Ag: 10 wt%) prepared by dry powder mixing (Ag10LM), and MLM-D coatings with different MXene content. c EMI SET, SEA, and SER of the MLM-D coatings with thicknesses of 10 and 20 μm. Error bars represent the SD of 201 scanning points in the X-band. d EMI SET, SEA, and SER of MLM-S coatings with thicknesses of 5, 10, and 20 μm. Error bars represent the SD of 201 scanning points in the X-band. e EMI SET, SEA, and SER of the MLM-S coating with a thickness of 20 μm from 5.88 to 18 GHz. f Illustration of EMI shielding mechanisms for the MLM-S coating. The black and gray regions in the middle panel represent MXene and LM, respectively. These images are generated using 3D modeling software. g EMI SE of the MLM-S coatings before and after heat treatment. The insets show the heat treatment environment: a muffle furnace (at 70 °C for 15 days) (left) and the plasticine burning (for 2 min) (right). h Comparison of the SSEt of the M2LM-S coating with that of other EMI shielding materials reported in the literature.
