Flexible, stretchable and electrically conductive MXene/natural rubber nanocomposite films for efficient electromagnetic interference shielding

Luo, Jiaqi; Zhao, Shu Yang Frank; Zhang, Haobin; Deng, Zhiming; Li, Lulu; Yu, Zhong‐Zhen

doi:10.1016/j.compscitech.2019.107754

Cited by 227 publications

(110 citation statements)

References 55 publications

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“…In this context, microwave absorbing materials (MA) with the ability of absorbing incident microwaves and converting them into thermal energy have been extensively studied to address these problems 2‐4 . Compared with traditional metal‐based MA materials that easily suffer from some shortcomings such as high density, poor adaptability, cumbersome processing and susceptibility to corrosion, 5‐7 elastomeric composites have been considered to be an alternative in designing an absorber along with superior absorption capability and wide effective bandwidth 8‐10 . In addition, elastomeric composites engage complex absorption mechanism, which is associated with the different hierarchy of scales, and can be controlled by tuning the morphology of nanofillers 11‐13 …”

Section: Introductionmentioning

confidence: 99%

Improved microwave absorbing performance of natural rubber composite with multi‐walled carbon nanotubes and molybdenum disulfide hybrids

Geng

Zhao

Mei

et al. 2020

Polymers for Advanced Techs

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Multicomponent nanocomposites demonstrate many properties that are not found in their mono‐counterparts. Here, natural rubber (NR) composites with improved electromagnetic properties were prepared via incorporating hybrids of one‐dimensional multi‐walled carbon nanotubes (MWCNTs) and two‐dimensional molybdenum disulfide (MoS2). Evidenced by the morphological results, the restacking of MoS2 and the tortuous of MWCNTs are effectively inhibited due to the depletion‐effect of the different dimensional nanoblocks. Owing to the synergetic effect of MWCNTs and MoS2, the resulted NR/MWCNTs/MoS2 nanocomposites showed higher electromagnetic properties than their NR/MWCNTs and NR/MoS2 counterparts did. The reflection loss of NR/MWCNTs/MoS2 composites with 5 vol% MWCNTs and 5 vol% MoS2 is −49.04 dB, which is 9.2 and 21.9 times stronger than that of sole MWCNTs or MoS2 filled NR composites, respectively. Such composite with excellent microwave capacity could be used as a new kind of candidate for the new types of microwave absorbing materials.

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Section: Introductionmentioning

confidence: 99%

Improved microwave absorbing performance of natural rubber composite with multi‐walled carbon nanotubes and molybdenum disulfide hybrids

Geng

Zhao

Mei

et al. 2020

Polymers for Advanced Techs

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“…In a similar study, Ti 3 C 2 T x and natural rubber (NR) were used to fabricate highly flexible and stretchable nanocomposites. [107] The electrical conductivity of the nonconducting NR increased with the MXene loading, achieving 14 S cm −1 at 6.7 vol% of MXene with a corresponding EMI SE of 53.6 dB (250 µm thickness). The developed segregated structures were cost-effective and easily processable.…”

Section: (7 Of 23)mentioning

confidence: 97%

2D Transition Metal Carbides (MXenes): Applications as an Electrically Conducting Material

et al. 2020

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conductive nature, tunable surface chemistry, and the ability to intercalate other metal ions, MXenes are at the forefront of the research in this field. One of the major factors responsible for the rapid progress in the research on MXene materials is their electrical conductivity, which is the highest among all synthetic 2D materials, more than ten times the conductivity of reduced graphene oxide (rGO) films. [7,8] This unique characteristic coupled with a hydrophilic nature and a good dispersion stability has expanded the applications of MXenes in electromagnetic interference (EMI) shielding, [9] optoelectronics, [10] sensing, [11] thermal heaters (THs), [12] thermoelectrics, [13] high dielectric materials, [14] triboelectric nanogenerators, [15] and electrode materials for batteries and supercapacitors. [16,17] Compared to graphene, the flagship 2D material, MXenes offer greater promise in applications requiring high electrical conductivity and solution processing to construct thin films via low-cost techniques such as spray coating. MXenes can form stable dispersions in a variety of solvents without an additive or surfactant; these dispersions are stable for several days, making them ideal for designing optoelectronic, plasmonic, and polymer composite applications. Most recently, a large area MXene film with dimensions of 100 cm × 10 cm was reported to possess an outstanding tensile strength (≈570 MPa), excellent electrical conductivity (≈15 100 S cm −1) and superior EMI shielding effectiveness (SE), (≈50 dB for 940 nm thick film), surpassing all the existing 2D materials produced to date. [18] The search for new and intriguing applications based on the outstanding electrical conductivity of MXenes is a topic of great interest. [6,19] MXenes are typically synthesized by a top-down selective etching procedure of a parent MAX phase, where "M" is an early transition metal element, "A" represents an element from Group 13 or 14, and "X" is either carbon or nitrogen. [20] To date, more than 100 pure MAX phase materials have been prepared; this number increases with the addition of solid solutions and/ or ordered double transition metal structures. [21] Potentially, all the MAX phase precursors can be converted to their respective MXenes, presenting numerous possibilities of materials design, in particular, regulating the electronic transport in a 2D lattice. [6] The "A" group elements in the MAX phase are etched using a mixture of acids and salts, including hydrofluoric acid (HF), NH 4 F, NaF, CaF, HCl+LiF mixture (forming in situ HF), HF+HCl, and others. [20,22] The etching process leaves the termination groups, T x (e.g., O, OH, and F) on the surface of MXenes, which are bonded to the outer M layers. The surface chemistry of MXenes offers significant opportunities to develop Since their discovery in 2011, 2D transition metal carbides, nitrides, and carbonitrides, known as MXenes, have attracted considerable global research interest owing to their outstanding electrical conductivity coupled with light weight, ...

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“…A segregated structure is a multiphase structure wherein conductive fillers are segregated to form a conducting network at low volume fraction within an insulating polymer matrix. [81,82] This inter-connected network of conductive fillers improves the electronic and mechanical properties of the structure and can enhance the shielding capability even at low concentrations.…”

Section: Mxenes' Segregated Structuresmentioning

confidence: 99%

“…A highly flexible and stretchable Ti 3 C 2 T x MXene/natural rubber (NR) nanocomposite film was produced using simple vacuum filtration with varying concentrations of MXene. [82] The electrostatic repulsion between the negatively charged MXene sheets and NR latex ensured even distribution of the MXene sheets between the NR particles to form a continuous interconnected conductive 3D MXene network in the NR matrix (Figure 19a-c). A large electrical conductivity (14 S cm −1 ) was measured in the nanocomposites with lower MXene content ( Figure 19d).…”

Section: Mxenes' Segregated Structuresmentioning

confidence: 99%

2D MXenes for Electromagnetic Shielding: A Review

Iqbal

Sambyal

Koo

2020

Adv Funct Materials

544

375

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Since the first report on electromagnetic interference (EMI) shielding of 2D Ti 3 C 2 T x in 2016, MXenes have captured the leadership position among lightweight shielding materials due to many advantages, including their excellent shielding performance, outstanding metallic conductivity, low density, large specific surface area, tunable surface chemistry, and solution processability. MXenes triggered a huge interest in the materials research community, leading to over 100 reported publications on MXenes' EMI shielding within 3 years. Many MXenes composites and hybrids in different structural forms, such as compact and laminate structures, layer-by-layer assemblies, porous foams and aerogels, and segregated structures, have been explored to further improve the intrinsic EMI shielding properties of MXenes. This article comprehensively reviews the recent advancements in MXene-based EMI shielding materials with different structural morphologies and provides an insight into future challenges and guidelines for finding material solutions for the nextgeneration shielding applications.

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Flexible, stretchable and electrically conductive MXene/natural rubber nanocomposite films for efficient electromagnetic interference shielding

Cited by 227 publications

References 55 publications

Improved microwave absorbing performance of natural rubber composite with multi‐walled carbon nanotubes and molybdenum disulfide hybrids

Improved microwave absorbing performance of natural rubber composite with multi‐walled carbon nanotubes and molybdenum disulfide hybrids

2D Transition Metal Carbides (MXenes): Applications as an Electrically Conducting Material

2D MXenes for Electromagnetic Shielding: A Review

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