Structure Design and Processing Strategies of MXene‐Based Materials for Electromagnetic Interference Shielding

Abstract

The development of new materials for electromagnetic interference (EMI) shielding is an important area of research, as it allows for the creation of more effective and high‐efficient shielding solutions. In this sense, MXenes, a class of 2D transition metal carbides and nitrides have exhibited promising performances as EMI shielding materials. Electric conductivity, low density, and flexibility are some of the properties given by MXene materials, which make them very attractive in the field. Different processing techniques have been employed to produce MXene‐based materials with EMI shielding properties. This review summarizes processes and the role of key parameters like the content of fillers and thickness in the desired EMI shielding performance. It also discusses the determination of power coefficients in defining the EMI shielding mechanism and the concept of green shielding materials, as well as their influence on the real application of a produced material. The review concludes with a summary of current challenges and prospects in the production of MXene materials as EMI shields.

Robust MXene Nanosheet-Based Electromagnetic Interference Shielding Membrane with Cation–π Interactions

“…The presence of internal defects further exacerbates the mechanical performance decline. Hence, thorough exploration of methods to enhance interlayer interactions among MXene nanosheets and improve the mechanical properties of MXene membranes is of utmost importance. − …”

Ti3C2Tx MXene- and Sulfuric Acid-Treated Double-Network Hydrogel with Ultralow Conductive Filler Content for Stretchable Electromagnetic Interference Shielding

“…In contrast, hydrogels composed of conductive fillers and cross-linked hydrophilic building blocks exhibit tissue-like mechanical properties, such as fatigue resistance, biotissue compliance, and self-healing capability, making them promising candidates for stretchable EMI shields. − Furthermore, their cellular porous structure, filled with ample water, suggest that hydrogels could offer high EMI SE through multiple reflections of incident electromagnetic waves and the polarization loss derived from water molecular and hydrogen-bond networks . While recent pioneering works have demonstrated the feasibility of hydrogel shields, − research in this area remains at an early stage, and achieving a balance between EMI SE and stretchability remains challenging. The existing EMI shielding hydrogels are typically fabricated by incorporating poly­(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) or Ti 3 C 2 T x MXene into another polymer matrix network like poly­(vinyl alcohol) (PVA) .…”

Tellurium Nanoparticles Incorporated into Electrospun Poly(acrylonitrile) Nanofibers, Followed by Carbonization and Their Poly(dimethylsiloxane) Composites for Electromagnetic Interference Shielding

“…However, metal-based shielding materials are being replaced because of their heavy weight, corrosive nature, and reflection-based shielding mechanism, which can cause secondary EMI. Current research focuses on alternate materials such as two-dimensional (2D) nanomaterials like MXenes − and carbon-based materials such as carbon nanofibers (CNFs), , carbon foam, − and graphene , due to their versatile features. Among them, one-dimensional (1D) CNF materials and their polymer composites assume great interest because of their unique advantages .…”