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
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Journal ArticleDOI
Synthesis and Surface Chemistry of 2D TiVC Solid-Solution MXenes.
Sanaz Yazdanparast,Sina Soltanmohammad,Annika Fash-White,Garritt J. Tucker,Geoff L. Brennecka +4 more
TL;DR: These results provide the first systematic study on the effect of synthesis conditions on the surface chemistry of solid-solution TiVC MXene and provide a more favorable surface chemistry for energy storage applications.
Journal ArticleDOI
Physical properties of 2D MXenes: from a theoretical perspective
TL;DR: In this article, the structural, transport, magnetic, vibrational, mechanical, and electrochemical properties of transition metal carbides and nitrides are discussed, and the most relevant properties of these MXenes are summarized.
Journal ArticleDOI
Young's Modulus and Tensile Strength of Ti3C2 MXene Nanosheets As Revealed by In Situ TEM Probing, AFM Nanomechanical Mapping, and Theoretical Calculations.
Konstantin L. Firestein,Joel E. von Treifeldt,Dmitry G. Kvashnin,Dmitry G. Kvashnin,Joseph F. S. Fernando,Chao Zhang,Alexander G. Kvashnin,Evgeny V. Podryabinkin,Alexander V. Shapeev,Dumindu P. Siriwardena,Pavel B. Sorokin,Pavel B. Sorokin,Dmitri Golberg,Dmitri Golberg +13 more
TL;DR: The tensile strength of Ti3C2 nanosheets reached up to 670 MPa for ∼40 nm thin nanoflakes as mentioned in this paper, while a strong dependence of tensile strengths on nanosheet thickness was demonstrated.
Journal ArticleDOI
One-pot in-situ hydrothermal synthesis of ternary In2S3/Nb2O5/Nb2C Schottky/S-scheme integrated heterojunction for efficient photocatalytic hydrogen production.
Muhammad Tayyab,Yujie Liu,Zhiguo Liu,Lihan Pan,Zehong Xu,Wenhui Yue,Liang Zhou,Juying Lei,Jinlong Zhang +8 more
TL;DR: In this article , the Nb2C MXene-derived ternary photocatalyst was synthesized via one-pot in-situ hydrothermal method for photocatalytic hydrogen (H2) evolution.
Journal ArticleDOI
Hydro-sensitive sandwich structures for self-tunable smart electromagnetic shielding
TL;DR: In this article, the authors demonstrate hydro-sensitive smart sandwich structures with self-adaptable electromagnetic interference (EMI) shielding ability via constructing polymeric porous non-woven-based spacers into highly conductive pyrolytic graphite papers.
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.