Surfaces and Interfaces
·
2024
·
IF 5.7
Fengsen Xie,Yajie Wang,Shixun Zhang,Yamin Pan,Chuntai Liu,Changyu Shen,Xianhu Liu
Composite films composed of biodegradable materials possessing flexibility, thermal regulation capabilities, and electromagnetic interference shielding attributes represent optimal selections for wearable items and the packaging of devices. Here, we employ a simple alternating immersion and spray-coating process to fabricate flexible multifunctional films by combining hydrophobic PLA electrospun film with PPy and MXene , and investigate the thermal management and electromagnetic interference shielding properties of the films. Through alternating immersion, PPy can be rapidly in-situ polymerized on the PLA film, enhancing the surface roughness of the fibers, enabling firm integration of MXene with the film. Benefiting from the broad wavelength absorption characteristics of PPy, the solar absorption capacity of the film is significantly enhanced (97.16 %), endowing it with excellent photothermal conversion capability. Meanwhile, the high conductivity of MXene imparts the composite film with controllable and stable active heating ability, meeting heating demands under complex weather conditions. Finally, inspired by origami techniques the electromagnetic interference shielding performance of films with different folding frequencies was compared. It was found that attributed to the increased reflection paths, the film exhibited a significant improvement in electromagnetic interference shielding performance (32.58 dB to 51.96 dB) after folding. In brief, this biodegradable multifunctional composite film is an attractive candidate for future wearable products or devices packaging.
研究领域:
材料科学
·
纳米技术
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Yan Zhang,Jin Yu,Jiayu Lu,Chenjie Zhu,Dongming Qi
Rapid growing of electronics has not only caused severe electromagnetic wave pollution, but also created a risk of fire and explosion. Therefore, developing ultralight, fire-resistant, high-performance electromagnetic interference (EMI) shielding materials are imperative but also challenging. Considering the outstanding metallic conductivity and high aspect ratio, 2D Ti 3 C 2 T x has been reported to be one of the most promising candidates for exhibiting excellent EMI shielding performance. Herein, we demonstrate a facile method to fabricate cellulose nanofiber (CNF)/ammonium polyphosphate (APP)/Ti 3 C 2 T x composite aerogels via a simple freeze-drying method. The resultant CNF/APP/Ti 3 C 2 T x composite aerogels exhibited excellent fire-resistance without obvious shrinkage when placed over the flame of an alcohol burner. Besides, the 8-mm-thick composite aerogel with 60% of Ti 3 C 2 T x showed an average EMI shielding effectiveness of 55 dB (specific EMI shielding effectiveness/thickness could be ~5729 dB cm 2 g −1 ) with an absorption-dominant mechanism. This performance is owing to the relative high electrical conductivity (12 S/m) and multiple reflections from the porous structure. These characteristics make the composite aerogel a much more competitive product for a high-performance EMI shielding material.
研究领域:
材料科学
·
电子工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Shanshan Song,Gaoping Xu,Bo Wang,Dongqi Liu,Zichen Ren,Chengyu Wang,Jiupeng Zhao,Leipeng Zhang,Yao Li
A multifunctional electronic skin with thermal radiation regulation and electromagnetic interference (EMI) shielding is urgent for electronic systems because of the thermal radiation emission and electromagnetic wave pollution. Herein, a flexible electronic skin was designed and fabricated, where the polyaniline (PANI) served as the functional layer and Ti3C2Tx MXene was employed as the conductive electrode. The transformation of emeraldine salt (ES) and leucoemeraldine base (LB) of PANI makes the skin achieve an infrared emissivity modulation, and the electromagnetic loss of PANI and ultrahigh electrical conductivity of Ti3C2Tx MXene make it exhibit EMI shielding ability. Benefiting from the special structural design, the multifunctional skin with a small thickness (0.3 mm) and low surface density (0.06 g/cm2) exhibits an excellent infrared emissivity modulation ability (Δε) of 0.32 with emissive power of 119.1 W/m2 at the wavelength range of 2.5–25 μm and total shielding effectiveness (SET) of 36.3 dB over the X-band (8.2–12.4 GHz). Meanwhile, the multifunctional skin remains black in the visible spectrum but a changeable color in the infrared spectrum. Even after repeated bending and twisting, the multifunctional skin still maintains a good emissivity adjustment. The simultaneous realization of dynamic thermal radiation regulation and EMI shielding endows the skin promising potential for various fields, such as adaptive infrared camouflage, thermal regulation, anticounterfeiting, and EMI shielding-related crossing field.
研究领域:
材料科学
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电子工程
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纳米技术
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热管理
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电磁兼容性
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanoscale Advances
·
2025
·
IF 4.6
Shahzad Hussain,Resham Siddique,Muhammad Nadeem,Eman Zafar,Sadia Manzoor,Jawwad A Darr
The rapid advancement of highly integrated electronics demands next generation electromagnetic interference (EMI) shielding materials that combine lightweight, ultrathin, flexible, and mechanically robust properties with exceptional shielding effectiveness (SE) to mitigate signal crosstalk and ensure device reliability. In this work, we demonstrate the fabrication of high-performance EMI shields using highly conductive, additive-free aqueous Ti3C2Tx (T = O, OH, Cl, F) MXene dispersions synthesized under both harsh and mild etching conditions. These dispersions were engineered into freestanding thin films and functionalized cotton fabrics via vacuum-assisted filtration, enabling tunable EMI shielding properties through precise control of etchant chemistry, flake size, microstructure, thickness, and MXene loading. The EMI shielding improved with film thickness and the 13 μm thick film demonstrated exceptional EMI shielding of 60 dB. The freestanding heat treated Ti3C2Tx film with minimal thickness of 5 µm achieved a remarkable shielding effectiveness of 71 dB (which is 37% higher than the untreated film) corresponding to 99.99999% EMI attenuation. This film also exhibited an ultrahigh absolute shielding effectiveness (SSET) of 72,300 dB cm2 g−1, surpassing all previously reported MXene-based shields of comparable thickness. The improved stability was attributed to thermal conversion of surface OH groups to O-terminations, reducing interflake spacing and enhancing conductivity. The coated cotton fabric achieved an unprecedented SE of 82 dB due to the excellent wave attenuation associated with its porous structure. Notably, the fabric retained its shielding performance even after six months of ambient exposure, highlighting exceptional environmental stability. This study establishes critical structure-property relationships, revealing that induced porosity, meta-structure effects, large flake size, and optimized surface terminations synergistically enhance EMI shielding. By elucidating the interplay between material parameters and shielding performance, this work provides a foundational framework for designing advanced EMI mitigation technologies, paving the way for scalable, high-performance shielding solutions in next-generation flexible and wearable electronics.
研究领域:
材料科学
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纳米技术
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电磁学
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表面工程
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柔性电子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Kunpeng Qian,Qianfan Zhou,Sineenat Thaiboonrod,Jianhui Fang,Miao Miao,Hongmin Wu,Shaomei Cao,Xin Feng
With the development of electronic equipment, heat problem and electromagnetic pollution severely affect both their functions and human health, which leads to great interests in developing materials synchronously with outstanding thermal conductivity and electromagnetic interference (EMI) shielding performance. Here, ultrathin Ti 3 C 2 T x /h-BN two-dimensional (2D) heterostructure films were prepared via coulombic assembly between Ti 3 C 2 T x MXene and h-BN nanosheet through ultrasonic blending. After the addition of h-BN nanosheet as thermal conductive nanofillers, the hybrid films achieved a higher value of thermal conductivity, compared to Ti 3 C 2 T x composite film without h-BN. The higher thermal conductivity offered by h-BN enables the Ti 3 C 2 T x /h-BN films have good potential for EMI shielding applications on wearable and portable electronic devices. When the mass ratio of Ti 3 C 2 T x /h-BN is 7:3, the hybrid film with the thickness of 47.60 µm exhibited electrical conductivity of 57.67 S/cm and the maximum EMI shielding effectiveness of 37.29 dB.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2025
·
IF 8.9
Fengdong Teng,Na Li,Ying Yuan,Junrong Yu,Yan Wang,Zuming Hu
The complex preparation process and high shrinkage of poly(p-phenylene terephthalamide) (PPTA) aerogel limit its wider application. Herein, PPTA and heterocyclic aramid (HPPTA) prepolymer were secondary polymerized to obtain Block-PPTA (BPPTA) with both rigid and flexible segments in the molecular chain. The rigid and flexible segments in molecular chain under non-solvent enable the rapid transformation of BPPTA solutions into well-shaped BPPTA gels. The BPPTA aerogel exhibits the advantages of low shrinkage, high thermal insulation, and high mechanical strength. Then, a small amount of MXene and AgNWs were attached to the surface of BPPTA aerogels by layer-by-layer spraying method, which not only enhanced the flame retardancy capability of the aerogels, but also made organic aerogels possible to be applied in the fields of electromagnetic interference shielding and thermoelectric conversion. This work provides an ideal strategy for the efficient preparation of low shrinkage para aramid aerogels and expands the application areas of aerogels.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2025
·
IF 4.7
Hong-mei Zuo,Hao Yin,Guoji Yu,Hongjie Wang,He Wang,Yanxia Xie,Fangtao Ruan,Zhenzhen Xu,Lihua Zou,Dian-sen Li
The intensification of electromagnetic pollution has boosted the exploration of high-performance electromagnetic interference (EMI) shielding materials. Herein, 2D MXene, 1D nickel (Ni) chain and PDMS were anchored on 3D porous skeleton of melamine sponge (MS) by a simple, inexpensive and scalable “dipping and coating” method, and a lightweight 3D hybrid nanostructure (MXene-Ni-PDMS/MS) was prepared. Super hydrophobic, high electric conductivity, excellent EMI shielding and outstanding super-elastic performances were obtained via the synergy effect of conductive 2D MXene and 1D Ni chain and hydrophobic PDMS. The results showed that the EMI of MXene-Ni-PDMS/MS with thickness of 10 mm could reach about 50 dB, which was 50 % higher than 25 dB of sponge with thickness of 2 mm, and could meet 20 dB commercial application. Moreover, the hybrid sponge exhibited super-elastic characteristics and could recover to its original state under 60 % strain during compressive fatigue. Even when it was subjected to 500 cycles at 40 % strain, the maximum compressive stress, Young's modulus and energy loss coefficient slightly decreased, indicating that the structure could maintain stable physical properties. The water contact angle could reach 145.1°, showing hydrophobic characteristics. This work offers a novel way for synthesis of excellent EMI shielding materials based on sponge.
研究领域:
材料科学
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电子工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2024
·
IF 8.3
Fan Xie,Qiaoling Liu,Xiyi Dai,Haitao Wei,Zhaoqing Lu
Multi-functional electromagnetic interference (EMI) shielding materials are crucial for advanced electronic devices, requiring low thickness, exceptional shielding performance, and stability, especially in extreme conditions. In this study, the hollow sandwich MXene/h-AgNWs/ANF (AMAgMA) composite films were fabricated via template sacrificing method and layer-by-layer vacuum assisted filtration. Specifically, the hollow MXene was created using PMMA as the template, together with AgNWs for the conductive layer, while ANF provided stability and high temperature resistance as the protective layer. The optimized EMI shielding efficiency (SE) reached 88.2 dB for a film thickness of 93 μm, with an SSE/t value of 18160 dB cm 2 ·g −1 , which was attributed to the hollow structure and continuous double conductive network design. Remarkably, EMI SE of the films maintained even after 70 days of exposure to oxidation, acid, alkali, salt, and ultrasonic treatment thanks to the sandwich design. Additionally, the composite films displayed excellent heat transfer and thermal stability (530 °C), alongside notable flame retardancy and self-extinguishing properties. The superior EMI shielding performance and stability in extreme environments suggest a promising application potential in advanced electronics.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2020
·
IF 6.444
Qianfan Zhou,Kunpeng Qian,Jianhui Fang,Miao Miao,Shaomei Cao,Xin Feng
With the mushrooming of smart electronic devices, ultrathin Ti 3 C 2 T x MXene based EMI shielding materials with long term durability have aroused much interest. Herein, 2D Ti 3 C 2 T x /g-C 3 N 4 heterojunction films were firstly assembled using cellulose nanofibrils (CNF) as green binder via a solution-based pressured-filtration process. The heterojunction film with Ti 3 C 2 T x /g-C 3 N 4 mass ratio of 5:1 (28.20 µm in thick) exhibited distinguished performance with EMI shielding effectiveness of 42.99 dB in X-band and high tensile strength of 23.85 MPa. Specially, the generation of photo-electrons from g-C 3 N 4 nanosheets reduced TiO 2 into lower valence states under 365 nm UV light-irritation, resulting in lower loss on electrical conductivity as well as EMI shielding performance compared to their unilluminated counterparts. The reduction on TiO 2 offered by the g-C 3 N 4 enables the heterojunction film to be considered as a promising alternative EMI shielding material for future potential applications, because it can run long time just need UV light modulation.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Xin Jiang,Junwei Zhou,Xinke Zhong,Zhaopeng Hu,Rongyan Hu,Yihu Song,Qiang Zheng
Electromagnetic interference (EMI) shielding materials with stretchability are important for developing wearable and flexible appliances. Herein, lithium bis(trifloromethanesulfonyl)imide (Li-TFSI)-doped poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) and carboxylated styrene-butadiene rubber (XSB) latex are used to prepare stretchable EMI shielding composite films of 0.2 mm in thickness. In these films, the doped PEDOT:PSS nanoparticles form tenuous conductive pathways between the hexagonally packed latex particles, resulting in higher EMI shielding efficiency (EMI SE) compared with the films containing traditional dopant ethylene glycol. For the purpose of stretchable EMI shielding, the films containing 6 wt % PEDOT:PSS and 6 wt % Li-TFSI demonstrate EMI SE of 50 and 30 dB (12.4 GHz) at 0 and 100% strains, respectively, being the highest values among the reported shielding composites except for those using liquid metal as the filler. The investigation also provides a simple and environmentally friendly preparation method being highlighted for the development of lightweight stretchable EMI shielding materials for applications in flexible electronics in the near future.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2022
·
IF 10.319
Kunpeng Qian,Shuang Li,Jianhui Fang,Yuhuan Yang,Shaomei Cao,Miao Miao,Xin Feng
Ti 3 C 2 T x MXenes with excellent metallic conductivity and flexibility have shown a promising prospect as electromagnetic interference (EMI) shielding materials. Ultrathin, hierarchical hybrid films were fabricated by using C 60 intercalating Ti 3 C 2 T x MXenes with the assistance of water-soluble γ -cyclodextrin (CD). The C 60 /CD complex was obtained by high-speed vibration milling using hydrophilic CD as dispersing agent. After thermal annealing treatment, the obtained hybrid film exhibited excellent EMI shielding (53.52±0.43 dB), hydrophobicity (water contact angle: 93.7°) and mechanical stability (over 0.9 million bending times). Taking advantage of the antioxidant of C 60 , the chemical durability of Ti 3 C 2 T x MXenes based hybrid films was also improved as expected. These results indicate that the well-designed hierarchical hybrid films with the intercalation of C 60 have promising potential for high-performance EMI shielding applications.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 35
·12057-12067
·
IF 6.4
Zhenping Ma,Lei Zhang,Xianzhen Wang,Guang Xiao,Yongbao Feng,Wei Wang,Konghu Tian,Dewei Liang,Yagang Yao,Qiulong Li
With the rapid advancements of portable and wearable devices, high-efficiency electromagnetic interference (EMI) shielding materials are highly required to eliminate radiated electromagnetic pollution. Ti3C2Tx MXene has shown great application potential as an EMI SE material due to its good conductivity. However, a single-loss mechanism has many limitations. Herein, to enrich the electromagnetic-wave-loss ways, MXene@ZIF-67/multiwalled carbon nanotubes (MWCNTs) composite films were successfully prepared by vacuum-assisted filtration, combined with the introduction of magnetic ZIF-67 anchored on MXene by an electrostatic self-assembly method. The MXene@ZIF-67/MWCNTs composite film (MZ2M8) achieved the best EMI shielding performance of 63.6 dB at 32 μm thickness, and the contribution ratio of the scattering parameters for absorption to reflection, i.e., SEA to SET, was 66.94%, thus achieving high absorption loss. Due to the high aspect ratio of the MWCNTs and the densely stacked “brick–mortar” layered structure, the composite film also exhibited excellent flexibility and mechanical performance, in which MZ8M2 could deliver a high tensile strength of 115.2 MPa, ensuring practical applications in different environments. Moreover, the thermal conductivity of MZ2M8 reached 3.367 W m−1 K−1, realizing the synergistic effect of high shielding efficiency and heat-dissipation performance, and avoiding the phenomenon of heat accumulation caused by the conversion of electromagnetic waves into heat energy.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）