Journal ArticleDOI
Electromagnetic interference shielding with 2D transition metal carbides (MXenes)
Faisal Shahzad,Mohamed Alhabeb,Christine B. Hatter,Babak Anasori,Soon Man Hong,Chong Min Koo,Yury Gogotsi +6 more
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TLDR
The mechanical flexibility and easy coating capability offered by MXenes and their composites enable them to shield surfaces of any shape while providing high EMI shielding efficiency.Abstract:
Materials with good flexibility and high conductivity that can provide electromagnetic interference (EMI) shielding with minimal thickness are highly desirable, especially if they can be easily processed into films. Two-dimensional metal carbides and nitrides, known as MXenes, combine metallic conductivity and hydrophilic surfaces. Here, we demonstrate the potential of several MXenes and their polymer composites for EMI shielding. A 45-micrometer-thick Ti3C2Tx film exhibited EMI shielding effectiveness of 92 decibels (>50 decibels for a 2.5-micrometer film), which is the highest among synthetic materials of comparable thickness produced to date. This performance originates from the excellent electrical conductivity of Ti3C2Tx films (4600 Siemens per centimeter) and multiple internal reflections from Ti3C2Tx flakes in free-standing films. The mechanical flexibility and easy coating capability offered by MXenes and their composites enable them to shield surfaces of any shape while providing high EMI shielding efficiency.read more
Citations
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A Ti3C2Tx MXene-Based Energy-Harvesting Soft Actuator with Self-Powered Humidity Sensing and Real-Time Motion Tracking Capability.
TL;DR: In this article, a smart soft actuator with multiple capabilities of humidity-driven actuating, humidity energy harvesting, self-powered humidity sensing, and real-time motion tracking is reported.
Journal ArticleDOI
Tailoring electromagnetic responses of delaminated Mo2TiC2T MXene through the decoration of Ni particles of different morphologies
Feiyue Hu,Xiaohan Wang,Shentu Bao,Li Meng Song,Shuang Zhang,Huanhuan Niu,Bingbing Fan,Rui Zhang,Hongxia Li +8 more
TL;DR: In this paper , a 2D/2D Ni/Mo 2 TiC 2 T x was constructed by loading spherical and flower-like Ni on delaminated Mo 2TiC 2T x MXene using the solvothermal route, indicating outstanding microwave absorption (50.36 dB at 1.4 mm only).
Journal ArticleDOI
Controllable fabrication of elastomeric and porous graphene films with superior foldable behavior and excellent electromagnetic interference shielding performance
TL;DR: In this article, a novel and facile approach is reported to controllably fabricate porous graphene films (PGFs) with chosen thickness by reduction-induced foaming of graphene oxide film with a spatial confinement strategy.
Journal ArticleDOI
Electromagnetic shielding behavior of heat-treated Ti3C2TX MXene accompanied by structural and phase changes
Biao Ji,Shangwu Fan,Xu Ma,Kaiyue Hu,Le Wang,Chenghua Luan,Juanli Deng,Laifei Cheng,Litong Zhang +8 more
TL;DR: In this article, the effect of heat treatment on the removal of these surface adsorption groups was evaluated, and the evolution of structure, phase, and electromagnetic shielding properties of MXenes with the change in heat treatment temperature was also studied in detail.
Journal ArticleDOI
Predictive theoretical screening of phase stability for chemical order and disorder in quaternary 312 and 413 MAX phases.
Martin Dahlqvist,Johanna Rosen +1 more
TL;DR: This work systematically explores a class of atomically laminated materials, Mn+1AXn (MAX) phases upon alloying between two transition metals, and suggests a range of stable ordered and disordered hypothetical elemental combinations.
References
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Journal ArticleDOI
Two‐Dimensional Nanocrystals Produced by Exfoliation of Ti 3 AlC 2
Michael Naguib,Murat Kurtoglu,Volker Presser,Jun Lu,Junjie Niu,Min Heon,Lars Hultman,Yury Gogotsi,Michel W. Barsoum +8 more
TL;DR: 2D nanosheets, composed of a few Ti 3 C 2 layers and conical scrolls, produced by the room temperature exfoliation of Ti 3 AlC 2 in hydrofl uoric acid are reported, which opens a door to the synthesis of a large number of other 2D crystals.
Journal ArticleDOI
25th Anniversary Article: MXenes: A New Family of Two‐Dimensional Materials
TL;DR: In this article, a new family of two-dimensional early transition metal carbides and carbonitrides, called MXenes, was discovered and a detailed outlook for future research on MXenes is also presented.
Journal ArticleDOI
Conductive two-dimensional titanium carbide ‘clay’ with high volumetric capacitance
TL;DR: This capacitance report reports a method of producing two-dimensional titanium carbide ‘clay’ using a solution of lithium fluoride and hydrochloric acid that offers a much faster route to film production as well as the avoidance of handling hazardous concentrated hydrofluoric acid.
Journal ArticleDOI
Cation Intercalation and High Volumetric Capacitance of Two-Dimensional Titanium Carbide
Maria R. Lukatskaya,Olha Mashtalir,Chang E. Ren,Yohan Dall'Agnese,Patrick Rozier,Pierre-Louis Taberna,Michael Naguib,Patrice Simon,Patrice Simon,Michel W. Barsoum,Yury Gogotsi +10 more
TL;DR: This study demonstrates the spontaneous intercalation of cations from aqueous salt solutions between two-dimensional (2D) Ti3C2 MXene layers, and provides a basis for exploring a large family of 2D carbides and carbonitrides in electrochemical energy storage applications using single- and multivalent ions.
Journal ArticleDOI
Electromagnetic interference shielding effectiveness of carbon materials
TL;DR: Carbon materials for electromagnetic interference (EMI) shielding are reviewed in this article, including composite materials, colloidal graphite and flexible graphite, and they include carbon filaments of submicron diameter.