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
2D metal carbides and nitrides (MXenes) for energy storage
TL;DR: More than twenty 2D carbides, nitrides and carbonitrides of transition metals (MXenes) have been synthesized and studied, and dozens more predicted to exist.
Journal ArticleDOI
Guidelines for Synthesis and Processing of Two-Dimensional Titanium Carbide (Ti3C2Tx MXene)
Mohamed Alhabeb,Kathleen Maleski,Babak Anasori,Pavel Lelyukh,Leah Clark,Saleesha Sin,Yury Gogotsi +6 more
TL;DR: Two-dimensional transition metal carbides, carbonitrides, and nitrides (MXenes) were discovered in 2011 and more than 20 different compositions have been synthesized by the selective etching of MAX phase and other precursors and many more theoretically predicted as mentioned in this paper.
Journal ArticleDOI
Flexible MXene/Graphene Films for Ultrafast Supercapacitors with Outstanding Volumetric Capacitance
Jun Yan,Jun Yan,Chang E. Ren,Kathleen Maleski,Christine B. Hatter,Babak Anasori,Patrick Urbankowski,Asya Sarycheva,Yury Gogotsi +8 more
TL;DR: In this article, a strategy to prepare flexible and conductive MXene/graphene (reduced graphene oxide, rGO) supercapacitor electrodes by using electrostatic self-assembly between positively charged rGO modified with poly(diallyldimethylammonium chloride) and negatively charged titanium carbide MXene nanosheets is presented.
Journal ArticleDOI
Hydrophobic, Flexible, and Lightweight MXene Foams for High-Performance Electromagnetic-Interference Shielding
TL;DR: For the first time, an efficient and facile approach is reported to fabricate freestanding, flexible, and hydrophobic MXene foam with reasonable strength by assembling MXene sheets into films followed by a hydrazine-induced foaming process.
Journal ArticleDOI
Towards flexible solid-state supercapacitors for smart and wearable electronics
TL;DR: The state-of-the-art advancements in FSSCs are reviewed to provide new insights on mechanisms, emerging electrode materials, flexible gel electrolytes and novel cell designs.
References
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Synergism on electromagnetic inductance (EMI)‐shielding in metal‐ and ferroelectric‐particle filled polymers
TL;DR: In this article, the electromagnetic inductance (EMI)-shielding of metal-and ferroelectric-particle filled polymers is described, and the composite, containing only metallic fillers, has a shielding effectiveness comparable to conventional products.
Journal ArticleDOI
High frequency properties of composite membrane with in-plane aligned Sendust flake prepared by infiltration method
TL;DR: In this paper, a novel infiltration method was proposed for composite membranes with highly in-plane aligned Sendust flakes embedded in polyvinyl alcohol matrix to enhance magnetic permeability, which could be caused by better alignment and less porosity.
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Studies on the synthesis and microwave absorption properties of Fe 3 O 4 /polyaniline FGM
Xiao Han,Yuan-Sheng Wang +1 more
TL;DR: In this paper, the electromagnetic parameters of the Fe3 O4/PANI/DBSA composites were calculated using the principle of impedance match and the calculated results agreed quite well with the experimentally measured data (R 4 GHz).
Journal ArticleDOI
New functional conductive polymer composites containing nickel coated carbon black reinforced phenolic resin
TL;DR: In this paper, the network structure of Ni-coated carbon black (NCB) composites filled with phenolic resin was investigated by means of using scanning electron microscopy, viscosity, interfacial tension, shrinkability, Flory-Huggins interaction parameters, and swelling index.