Electromagnetic Shielding of Monolayer MXene Assemblies

Taeyeong Yun, Hyerim Kim, Aamir Iqbal, Yong Soo Cho, Gang San Lee, Myung Ki Kim, Seon Joon Kim, Daesin Kim, Yury Gogotsi, Sang Ouk Kim, Chong Min Koo

Research output: Contribution to journalArticlepeer-review

526 Citations (Scopus)

Abstract

Miniaturization of electronics demands electromagnetic interference (EMI) shielding of nanoscale dimension. The authors report a systematic exploration of EMI shielding behavior of 2D Ti3C2Tx MXene assembled films over a broad range of film thicknesses, monolayer by monolayer. Theoretical models are used to explain the shielding mechanism below skin depth, where multiple reflection becomes significant, along with the surface reflection and bulk absorption of electromagnetic radiation. While a monolayer assembled film offers ≈20% shielding of electromagnetic waves, a 24-layer film of ≈55 nm thickness demonstrates 99% shielding (20 dB), revealing an extraordinarily large absolute shielding effectiveness (3.89 × 106 dB cm2 g−1). This remarkable performance of nanometer-thin solution processable MXene proposes a paradigm shift in shielding of lightweight, portable, and compact next-generation electronic devices.

Original languageEnglish
Article number1906769
JournalAdvanced Materials
Volume32
Issue number9
DOIs
Publication statusPublished - 2020 Mar 1

Bibliographical note

Funding Information:
The authors would like to thank Dr. Dong-Ho Kim and Ah Ra Kim (KIMS) for assistance in Hall measurements, and Dr. Meikang Han (Drexel University) and Dr. Sangho Cho (KIST) for their helpful comments on the manuscript. A.I. and S.J.K. acknowledge Dr. Babak Anasori and Mr. Mohamed Alhabeb (Drexel University) for their guidance in MXene synthesis. C.M.K. acknowledges Pohang Light Source for assistance in diffraction measurements. This work was financially supported by KIST-KAIST joint research lab (2V05750), KU-KIST research, young fellow, and KIST internal research programs funded by Korea Institute of Science and Technology (KIST). This work was also supported by grants from the Basic Science Research Program (2017R1A2B3006469 and 2019M3D1A2014004) through the National Research Foundation of Korea funded by the Ministry of Science, ICT, and Future Planning, the Fundamental R&D Program (10077545) for Core Technology of Materials and the Industrial Strategic Technology Development Program funded by the Ministry of Trade, Industry & Energy, and Construction Technology Research Project (19SCIP-B146646-02) funded by Ministry of Land, Infrastructure and Transport, Republic of Korea. T.Y., G.S.L. and S.O.K. were partially supported by the National Creative Research Initiative (CRI) Centre for Multi-Dimensional Directed Nanoscale Assembly (2015R1A3A2033061) funded by the National Research Foundation (NRF) of Korea. Collaboration between KIST, KAIST, and Drexel University was supported by the Leading Foreign Research Institute Recruitment Program (NNFC-Drexel-SMU FIRST Nano Co-op Centre, 2015K1A4A3047100) of the National Research Foundation (NRF) of Korea, funded by the Ministry of Science and ICT, Korea.

Funding Information:
The authors would like to thank Dr. Dong‐Ho Kim and Ah Ra Kim (KIMS) for assistance in Hall measurements, and Dr. Meikang Han (Drexel University) and Dr. Sangho Cho (KIST) for their helpful comments on the manuscript. A.I. and S.J.K. acknowledge Dr. Babak Anasori and Mr. Mohamed Alhabeb (Drexel University) for their guidance in MXene synthesis. C.M.K. acknowledges Pohang Light Source for assistance in diffraction measurements. This work was financially supported by KIST‐KAIST joint research lab (2V05750), KU‐KIST research, young fellow, and KIST internal research programs funded by Korea Institute of Science and Technology (KIST). This work was also supported by grants from the Basic Science Research Program (2017R1A2B3006469 and 2019M3D1A2014004) through the National Research Foundation of Korea funded by the Ministry of Science, ICT, and Future Planning, the Fundamental R&D Program (10077545) for Core Technology of Materials and the Industrial Strategic Technology Development Program funded by the Ministry of Trade, Industry & Energy, and Construction Technology Research Project (19SCIP‐B146646‐02) funded by Ministry of Land, Infrastructure and Transport, Republic of Korea. T.Y., G.S.L. and S.O.K. were partially supported by the National Creative Research Initiative (CRI) Centre for Multi‐Dimensional Directed Nanoscale Assembly (2015R1A3A2033061) funded by the National Research Foundation (NRF) of Korea. Collaboration between KIST, KAIST, and Drexel University was supported by the Leading Foreign Research Institute Recruitment Program (NNFC‐Drexel‐SMU FIRST Nano Co‐op Centre, 2015K1A4A3047100) of the National Research Foundation (NRF) of Korea, funded by the Ministry of Science and ICT, Korea.

Publisher Copyright:
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

  • 2D materials
  • MXene
  • electromagnetic interference shielding
  • nanomaterials
  • self-assembly

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering

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