2023
DOI: 10.1021/acsnano.3c01697
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Robust Pristine MXene Films with Superhigh Electromagnetic Interference Shielding Effectiveness via Spatially Confined Evaporation

Abstract: Lightweight, thin electromagnetic interference (EMI) shielding film materials with high shielding effectiveness and good mechanical performance are highly required for flexible and portable electronics. Two-dimensional titanium carbide (Ti 3 C 2 T x MXene) has a great potential to meet these requirements because of the easy fabrication of ultrathin conductive films via solution processing. However, the production of strong pristine MXene films is still challenged by the presence of voids and wrinkles, as well … Show more

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Cited by 24 publications
(10 citation statements)
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“…Generally, the EMI shielding performance of materials depends largely on their conductivity. The higher the conductivity, the higher the electromagnetic interference shielding effectiveness (EMI SE) Figure a,b shows the electrical conductivity of all the TPAF composite films.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Generally, the EMI shielding performance of materials depends largely on their conductivity. The higher the conductivity, the higher the electromagnetic interference shielding effectiveness (EMI SE) Figure a,b shows the electrical conductivity of all the TPAF composite films.…”
Section: Resultsmentioning
confidence: 99%
“…The higher the conductivity, the higher the electromagnetic interference shielding effectiveness (EMI SE). 46 conductivity of TPAF composite films increases from 8.36 × 10 2 to 8.62 × 10 5 S/m, which is related to the electroless plating time. In addition, one can see that the lower layer of the composite film is able to light an LED lamp, while the lower layer can not, as shown in Figure S7.…”
Section: Electrical and Emi Shieldingmentioning
confidence: 98%
“…[1][2][3] The emergence of transition metal carbides and/or nitrides (MXenes) has made it possible to build high-performance EMI shields by using thin films or low-density porous foams/aerogels owing to their comparable electrical conductivity to metals, large specific surface area, the ease of processing, and abundance of surface functional groups. [4][5][6][7] For instance, the thin yet robust, highly electrically conductive MXene films have been widely prepared through vacuum filtration, [8] spatially confined evaporation, [9] and various coating methods. [10] Despite the high EMI shielding effectiveness achieved for the films at low thicknesses ranging from several to hundreds of micrometers, it is inevitable to encounter the compact stacking of MXene flakes, which leads to a high density of the EMI shields.…”
Section: Introductionmentioning
confidence: 99%
“…Advanced materials with uniform architecture at multiple scales are essential for achieving exceptional mechanical properties and on-demand functionalities . Precisely controlling nanostructures with minimized defects and understanding the multiscale structure–property relationships are the fundamental of constructing high-performance functional materials. , With specific multiscale structural engineering, materials can realize an unusual combination of dissimilar properties, including mechanic–electrical, , optical, , magnetic, and other properties. For instance, the chiral nematic structure, also known as twisted plywood and cholesteric structure, is a typical example of hierarchical architectures with mechanical–functional combination, which are widely present in the animal and plant kingdoms.…”
Section: Introductionmentioning
confidence: 99%