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Anomalous Absorption of Electromagnetic Waves by 2D Transition Metal Carbonitride Ti3CNTx (MXene)
Book chapter

Anomalous Absorption of Electromagnetic Waves by 2D Transition Metal Carbonitride Ti3CNTx (MXene)

Aamir Iqbal, Faisal Shahzad, Kanit Hantanasirisakul, Myung-Ki Kim, Jisung Kwon, Junpyo Hong, Hyerim Kim, Daesin Kim, Yury Gogotsi and Chong Min Koo
MXenes, pp 1013-1027
2023

Abstract

Lightweight, ultrathin, and flexible electromagnetic interference (EMI) shielding materials are needed to protect electronic circuits and portable telecommunication devices and to eliminate cross-talk between devices and device components. Here, we show that a two-dimensional (2D) transition metal carbonitride, Ti3CNT x MXene, with a moderate electrical conductivity, provides a higher shielding effectiveness compared with more conductive Ti3C2T x or metal foils of the same thickness. This exceptional shielding performance of Ti3CNT x was achieved by thermal annealing and is attributed to an anomalously high absorption of electromagnetic waves in its layered, metamaterial-like structure. These results provide guidance for designing advanced EMI shielding materials but also highlight the need for exploring fundamental mechanisms behind interaction of electromagnetic waves with 2D materials.

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