Scalable manufacturing of flexible, durable Ti3C2Tx MXene/Polyvinylidene fluoride film for multifunctional electromagnetic interference shielding and electro/photo-thermal conversion applications

Li, Yanli; Zhou, Bing; Shen, Yong; He, Chengen; Wang, Bo; Liu, Chuntai; Feng, Yuezhan; Shen, Changyu

doi:10.1016/j.compositesb.2021.108902

Cited by 106 publications

(41 citation statements)

References 53 publications

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“…The applicable substrate is not confined to the polymer that can be vacuum-filtered to form a membrane, such as cellulose nanofiber (CNF), aramid nanofiber (ANF), and poly(vinyl alcohol) (PVA) . The independent conductive AgNW layer in the composite film can overcome the shortcoming of the high contact resistance of adjacent fillers in homogeneously blended films. , The film exhibited excellent EMI shielding and Joule heating performance synchronously when the conductive filler content was 1.28 wt %. The wrapping of the MXene sheet onto the AgNW skeleton enhanced the conductivity, EMI shielding performance, and mechanical stability of the PVDF-AgNW/MXene film by strengthening the interconnectivity and reducing exposure of AgNWs.…”

Section: Introductionmentioning

confidence: 99%

Flexible Poly(vinylidene fluoride)-MXene/Silver Nanowire Electromagnetic Shielding Films with Joule Heating Performance

Song

Yan

et al. 2021

Ind. Eng. Chem. Res.

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Polymeric films with high electromagnetic interference (EMI) shielding effectiveness (SE) and polyfunctionality are highly desirable for wearable electronic devices. Herein, a sandwich-structured EMI shielding film with Joule heating performance composed of a poly(vinylidene fluoride) (PVDF) layer and a conductive filler layer (silver nanowire (AgNW) and MXene) was constructed by electrostatic spinning, vacuum-assisted filtration (VAF), and hot compression. An independent AgNW layer endowed the film with predominant EMI shielding performance at a low conductive filler content. A high EMI SE of 45.4 dB was obtained in the X band at a AgNW fraction of 1.28 wt %. The introduction of MXene improved the connection of the AgNW networks, thereby further enhancing the electrical conductivity and imparting the film with long-term stability. The as-obtained PVDF-AgNW/MXene film exhibited an outstanding EMI SE of 47.8 dB and only a slight decrease in EMI SE was detected after 2000 bending cycles. Besides, the PVDF-AgNW/MXene film exhibits excellent Joule heating performance. The surface temperature of the film could exceed 77 °C under an applied voltage of 2.5 V. Therefore, our sandwich-structured film with enhanced EMI shielding and Joule heating performance can be used for flexible electronic device applications in extreme conditions.

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Section: Introductionmentioning

confidence: 99%

Flexible Poly(vinylidene fluoride)-MXene/Silver Nanowire Electromagnetic Shielding Films with Joule Heating Performance

Song

Yan

et al. 2021

Ind. Eng. Chem. Res.

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“…In contrast, environmentally favorable absorption shielding occurs when dissipation of incident EMWs through conduction and polarization losses is dominant. The former originates from electrical conductivity, and the latter arises from dipole polarization in the heterogeneous interfaces such as surface functional groups, dangling bonds, and microstructural defects. ,, Traditional metal-based EMI shielding materials exhibit outstanding shielding efficiency due to their copious mobile charge carriers. However, applications of the metals have been limited by their negative properties such as low chemical corrosion resistance, high density, low flexibility, and dominant reflection shielding mechanism …”

Section: Introductionmentioning

confidence: 99%

Greatly Enhanced Electromagnetic Interference Shielding Effectiveness and Mechanical Properties of Polyaniline-Grafted Ti₃C₂T_x MXene–PVDF Composites

Habibpour

Zarshenas

Zhang

et al. 2022

ACS Appl. Mater. Interfaces

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Nowadays, evolutions in wireless telecommunication industries, such as the emergence of complex 5G technology, occur together with massive development in portable electronics and wireless systems. This positive progress has come at the expense of significant electromagnetic interference (EMI) pollution, which requires the development of highly efficient shielding materials with low EM reflection. The manipulation of MXene surface functional groups and, subsequently, incorporation into engineered polymer matrices provide mechanisms to improve the electromechanical performance of conductive polymer composites (CPCs) and create a safe EM environment. Herein, Ti 3 C 2 T x MXene nanoflakes were first synthesized and then, taking advantage of their abundant surface functional groups, polyaniline (PA) nanofibers were grafted onto the MXene surface via oxidant-free oxidative polymerization at two different MXene to monomer ratios. The electrical conductivity, EMI shielding effectiveness (SE), and mechanical properties of poly (vinylidene fluoride) (PVDF)-based CPCs at different nanomaterial loadings were then thoroughly investigated. A very low percolation threshold of 1.8 vol % and outstanding electrical conductivities of 0.23, 0.195, and 0.17 S/cm were obtained at 6.9 vol % loading for PVDF−MXene, PVDF−MX 2 AN 1 , and PVDF−MX 1 AN 1 , respectively. Compared to the pristine MXene composite, surface modification significantly enhanced the EMI SE of the PVDF−MX 2 AN 1 and PVDF−MX 1 AN 1 composites by 19.6 and 32.7%, respectively. The remarkable EMI SE enhancement of the modified nanoflakes was attributed to (i) the intercalation of PA nanofibers between MXene layers, resulting in better nanoflake exfoliation, (ii) a large amount of dipole and interfacial polarization dissipation by constructing capacitor-like structures between nanoflakes and polymer chains, and (iii) augmented EMI attenuation via conducting PA nanofibers. The surface modification of the MXene nanoflakes also enhanced the interfacial interactions between PVDF chains and nanoflakes, which resulted in an improved Young's modulus of the PVDF matrix by about 67 and 46% at 6.9 vol % loading for PVDF−MX 2 AN 1 and PVDF−MX 1 AN 1 composites, respectively.

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“…Alternatively, several other assembly techniques, such as blade coating, spin coating, and drop casting, have been exploited to produce large-area MXene films with improved quality. [17,[30][31][32] For instance, Zhang et al proposed a blade-coating method to fabricate large-scale MXene films composed of highly ordered flakes. [33] These MXene films demonstrate record tensile strength up to 570 MPa for a 940 nm thick film and electrical conductivity of 15 100 S cm −1 for a 214 nm thick film.…”

Section: Introductionmentioning

confidence: 99%

Gelation‐Assisted Assembly of Large‐Area, Highly Aligned, and Environmentally Stable MXene Films with an Excellent Trade‐Off between Mechanical and Electrical Properties

Huang

Zhou

et al. 2022

Small

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Layered MXene films have shown enormous potential for wide applications due to their high electrical conductivity and unique laminated microstructure. However, the intrinsic susceptibility to oxidation and the mechanical fragility of MXene films are the two major bottlenecks that prevent their widespread industrial applications. Here, a facile yet efficient assembly strategy is proposed to address these issues by increasing the alignment and compactness of MXene layers as well as strengthening the interlayer interactions. This method involves the gelation of MXene flakes with a multifunctional inorganic “mortar” polymer (ammonium polyphosphate, APP) followed by quasi‐solid‐state assembly enabled by a mechanical rolling process, by which the 3D gel network is transformed into 2D freestanding MXene films with unprecedented flake alignment and compactness. Besides, due to the multiple molecular‐level interactions (hydrogen bonding, coordination bonding, and electrostatic force) between APP and MXene flakes, the resultant MXene‐APP film (MAF) displays high mechanical strength (286.4 ± 20.3 MPa) and excellent electrical conductivity (8012.4 ± 325.6 S cm−1), along with remarkable environmental stability. As an application demonstration, MAF exhibits outstanding electromagnetic interference shielding effectiveness with long‐term durability, highlighting the great potential of this gelation‐assisted assembly strategy in fabricating large‐area, high‐performance MXene films for diverse real‐world applications.

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Scalable manufacturing of flexible, durable Ti3C2Tx MXene/Polyvinylidene fluoride film for multifunctional electromagnetic interference shielding and electro/photo-thermal conversion applications

Cited by 106 publications

References 53 publications

Flexible Poly(vinylidene fluoride)-MXene/Silver Nanowire Electromagnetic Shielding Films with Joule Heating Performance

Flexible Poly(vinylidene fluoride)-MXene/Silver Nanowire Electromagnetic Shielding Films with Joule Heating Performance

Greatly Enhanced Electromagnetic Interference Shielding Effectiveness and Mechanical Properties of Polyaniline-Grafted Ti₃C₂T_x MXene–PVDF Composites

Gelation‐Assisted Assembly of Large‐Area, Highly Aligned, and Environmentally Stable MXene Films with an Excellent Trade‐Off between Mechanical and Electrical Properties

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Scalable manufacturing of flexible, durable Ti3C2Tx MXene/Polyvinylidene fluoride film for multifunctional electromagnetic interference shielding and electro/photo-thermal conversion applications

Cited by 106 publications

References 53 publications

Flexible Poly(vinylidene fluoride)-MXene/Silver Nanowire Electromagnetic Shielding Films with Joule Heating Performance

Flexible Poly(vinylidene fluoride)-MXene/Silver Nanowire Electromagnetic Shielding Films with Joule Heating Performance

Greatly Enhanced Electromagnetic Interference Shielding Effectiveness and Mechanical Properties of Polyaniline-Grafted Ti3C2Tx MXene–PVDF Composites

Gelation‐Assisted Assembly of Large‐Area, Highly Aligned, and Environmentally Stable MXene Films with an Excellent Trade‐Off between Mechanical and Electrical Properties

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Greatly Enhanced Electromagnetic Interference Shielding Effectiveness and Mechanical Properties of Polyaniline-Grafted Ti₃C₂T_x MXene–PVDF Composites