Woo, Seung Hee Lee, Juyun Kim, Jeong Pil Hong, Junpyo Jang, Jeong Min Ko, Tae Yun Kang, Yun Chan Kim, Dae Woo Kim, Seon Joon 2024-07-11T06:00:45Z 2024-07-11T06:00:45Z 2024-07-11 2024-08 2352-9407 https://pubs.kist.re.kr/handle/201004/150210 With the proliferation of devices for 5 G communication and the advent of future mobility, the management of electromagnetic interference (EMI) has become crucial. While traditional metal -based films exhibit high EMI shielding effectiveness (SE), the demand for lightweight materials and structures for high energy efficiency is desired in future applications. This study presents an approach for fabricating electrically conductive and porous MXene-reduced graphene oxide (rGO) hybrids with improved EMI shielding performance through electrostatic assembly and rapid annealing techniques. Here, the GO surface was converted to a positive charge using poly (diallyldimethylammonium chloride) (PDDA) to induce electrostatic assembly with negatively charged MXene nanosheets. To induce extensive porous structures and simultaneously reduce graphene oxide to provide electrical conductivity, MXene-GO hybrid films were rapidly annealed at 600 degrees C. The resulting porous hybrid films exhibited significantly improved EMI shielding effectiveness in the X -band and Ka -band, with SE T values increasing by up to 20 dB. It was also revealed that this increment was dominantly contributed by the increase in SE A rather than SE R . Furthermore, the hybrids demonstrated enhanced heat dissipation compared to pristine MXene EMI shielding films. We believe that our work proposes a facile fabrication method in developing advanced materials for EMI shielding applications in 5 G communication systems. English Elsevier BV Electrostatic assembly of charge-modulated MXene and graphene oxide into conductive porous nanohybrids via rapid annealing for EMI shielding Article 10.1016/j.apmt.2024.102271 1 Applied Materials Today, v.39 Applied Materials Today 39 Y scie scopus 001258242900001 2-s2.0-85195045220 Materials Science, Multidisciplinary Materials Science Article THERMAL-CONDUCTIVITY FABRICATION ABSORPTION MEMBRANE FILM Porous structure EMI shielding MXene Graphene oxide Charge modulation