Patternable Nanocellulose/Ti3C2Tx Flexible Films with Tunable Photoresponsive and Electromagnetic Interference Shielding Performances

Jin, Xiaoyue; Sang, Chenyu; Yue, Yiying; Xu, Xinwu; Mei, Changtong; Xiao, Huining; Lou, Zhichao

doi:10.1021/acsami.2c11567

Cited by 46 publications

(12 citation statements)

References 64 publications

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“…CTA-middle-1500 is proven to be appropriate for practical applications on EM shielding with advantages of larger EMI true SE normalT ρ values than those of previously published samples in Table , − which is mainly due to its better absorption process when the EMWs enter into it. To be noted, even so, a large amount of EM energy attenuation is still caused by the reflections due to the good conductivity of the material when the EMWs are incident on the surface of the material.…”

Section: Resultsmentioning

confidence: 97%

Bioinspired Carbon Superstructures for Efficient Electromagnetic Shielding

Sun

Lou

Lei

et al. 2023

ACS Appl. Mater. Interfaces

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Biologically inspired superstructural materials exhibit wide application prospects in many fields, in terms of mitigating increasingly serious electromagnetic (EM) pollution in the civil field. Here, we successfully obtain bamboo slices with uniform pore size distribution through the advanced bamboo transverse splitting technology developed by our group previously and prepare large-scale honeycomb-like carbon-based tubular array (CTA) structures with a controllable pore size, graphitization degree, and selectable conductivity property. Based on the simulation and experimental results, the EM shielding performance of CTAs is proven to be sensitive to the microchannel aperture size and the EM energy incident angle, which is attributed to the difference in the propagation rate of induced electrons in different directions. Among the candidates, CTA-middle-1500 exhibits the best shielding performance against incident EM energy with average SE/ρ values of 123.7 and 144.5 dB cm3 g–1 for perpendicular and parallel directions, respectively, showing its application potential as a lightweight and efficient EM shielding material. The predicted optimal incident angle for CTA-middle-1500 against EM energy radiation is 15°, with the largest RCS reduction value of 26.1 dB m2. The excellent EM shielding performance is attributed to the good reflection capacity involved with the high conductivities of the CTAs.

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Section: Resultsmentioning

confidence: 97%

Bioinspired Carbon Superstructures for Efficient Electromagnetic Shielding

Sun

Lou

Lei

et al. 2023

ACS Appl. Mater. Interfaces

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“…30 By using specific CNFs as an insert to connect Ti 3 C 2 T x nanosheets, Jin et al prepared ultrathin TOCN/Ti 3 C 2 T x films of thickness of about 40 μm with a tensile strength that could reach 98.89 MPa. 31 Nanocellulose has excellent mechanical strength and high aspect ratio, making it a "binder" for connecting MXene layers. 32−34 Compared to CNF, CNC has a smaller diameter and a reduced tendency to agglomerate.…”

Section: Introductionmentioning

confidence: 99%

Flexible and Recyclable MXene Nanosheet/Ag Nanowire/Cellulose Nanocrystal Composite Films for Electromagnetic Interference Shielding

Yan,

Zhang,

et al. 2024

ACS Appl. Nano Mater.

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With the increasing popularity of electronic communication equipment, electromagnetic pollution continues to worsen, and the requirement for ultrathin, highly flexible, and multifunctional electromagnetic interference (EMI) shielding films is becoming more imperative. Within this study, composite films were prepared by introducing one-dimensional (1D) cellulose nanocrystals (CNC) and silver nanowires (AgNWs) into twodimensional (2D) MXene-based materials using the method of vacuum-filtration-induced self-assembly. Benefiting from the 1D/ 2D conductive network composed of AgNWs and MXene, the composite film has a high conductivity (36,244 S m −1 ) and excellent EMI shielding performance (69.94 dB) at a thickness of 54 μm. The introduction of a 1D sustainable CNC as a "binder" increased the tensile strength of the composite film from 16.75 MPa (pure Ti 3 C 2 T x MXene film) to 26.14 MPa. In addition, the MXene/AgNWs/CNC composite films have outstanding Joule heating performance, and the surface temperature exceeded 70.2 °C under 2.5 V. Moreover, the MXene/AgNWs/CNC composite films have recyclable properties, and the test results indicate that the EMI SE value of the composite films is 40.78 dB after recycling. We believe that the designed MXene/AgNWs/CNC composite films have promising applications with respect to electromagnetic protection in flexible wearable devices, aerospace systems, and extreme environments.

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“…Therefore, multifunctional sensors have attracted considerable attention in supercapacitors, [23] electromagnetic shielding, [24,25] friction nanogenerators, [26] joule heat generation, [27] and gas measurement, [28] recently. For instance, a flexible, robust, and multifunctional nanocomposite, montmorillonite/aramid nanofibers@MXene, was designed for electromagnetic shielding protection from joule heating and fire resistance.…”

Section: Introductionmentioning

confidence: 99%

A Flexible Strain Sensor with High Electrical Conductivity, Rapid Electrothermal Response, and High Strain Sensitivity for Real‐Time Monitoring of Human Joint Movement

Yang

et al. 2023

Adv Materials Technologies

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Here, a flexible film, called PPA film, is designed as a multifunctional sensor with high electrical conductivity, rapid electrothermal response, and high strain sensitivity. The film contains polyvinyl alcohol (PVA), graphene nanosheets (GNs), nanocellulose crystals (CNCs), polydopamine (PDA), and silver nanoparticles (Ag NPs), symbolized as PPA film. The CNCs enhance the dispersion of the GNs during film formation; the stacked GNs change heat conduction and resistance during film bending; PDA serves as a linking agent; Ag NPs improve the conductivity (i.e., 2.65 × 103 S/m) of the film during electrothermal response measurement. A flexible strain sensor designed from PPA films is mounted on the skin surface of human joints to monitor human movement in real time. The sensor exhibited good stability and cycling durability, i.e., the resistance variation remained stable during the bend‐release repetitions for 600 cycles at 1.2 % strain. The flexible sensors exhibited highly sensitive to bending strain, i.e., 30.5 of the gauge factor (GF), and can be applied to monitor bending motions of human joints, such as finger, wrist, elbow, and knee joints.In addition, the PPA films exhibit very high joule heat generation ability and demonstrate its applicability as a joint or stomach warmer and sensor. The as‐designed flexible sensor is a promising candidate for application in environmentally friendly and multifunctional wearable devices.

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Patternable Nanocellulose/Ti₃C₂T_x Flexible Films with Tunable Photoresponsive and Electromagnetic Interference Shielding Performances

Cited by 46 publications

References 64 publications

Bioinspired Carbon Superstructures for Efficient Electromagnetic Shielding

Bioinspired Carbon Superstructures for Efficient Electromagnetic Shielding

Flexible and Recyclable MXene Nanosheet/Ag Nanowire/Cellulose Nanocrystal Composite Films for Electromagnetic Interference Shielding

A Flexible Strain Sensor with High Electrical Conductivity, Rapid Electrothermal Response, and High Strain Sensitivity for Real‐Time Monitoring of Human Joint Movement

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