CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Xu Zhou,Xiao-Ai Ye,Xu Zhang,Dong Wen,Hong Wang,Gui-Gen Wang
The increasingly serious electromagnetic radiation and electronic waste pose a significant threat to public health and the operation of electronic devices. Despite the enormous potential of highly conductive Ti 3 C 2 T x MXene-based electromagnetic interference (EMI) shielding materials, significant challenges persist in terms of mechanical flexibility and antioxidation. In this study, it was firstly proposed for a scalable method to prepare MXene Ti 3 C 2 T x /gelatin/sodium lignosulphonate (MXene/GEL/SL) films with good biodegradability, and Fe 3+ ions were introduced to enhance cross-linking degree and stabilize the gelatin matrixes, which endowed the films with mechanical flexibility and durability. The film (MXene content: 30 wt%) has a thickness of merely 0.08 mm, exhibiting a high SE/d value of 432 dB/mm and maintaining its good EMI shielding performance even after being soaked in water for 15 days. Additionally, the film-based triboelectric nanogenerator (TENG) even in 85 % humidity manifest excellent open-circuit voltage (230 V), short-circuit current (28 μA) and power density (2.9 W/m 2 ), respectively. Also, the TENG demonstrates good utility as a self-powered sensor when attached to different parts of human body to monitor human health. Therefore, the as-developed MXene/GEL/SL film presents good application prospects in the fields of both electromagnetic shielding and self-powered sensing for wearable electronics.
研究领域:
材料科学
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电子工程
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生物医学工程
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DOI
高影响因子
Nanoscale Research Letters
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2021
·Vol. 16
·期 1
·1-10
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IF 4.703
Feng Yanmin,He Meng,Liu Xia,Wang Wei,Yu Aifang,Wan Lingyu,Zhai Junyi
The output power of the triboelectric nanogenerator (TENG) strongly depends on the performance of triboelectric materials, especially microstructures and functional groups of them. In this work, aiming at the excellent triboelectric ability, alternate-layered MXene composite films-based TENG with abundant fluorine groups(-F) through layer-by-layer stacking are designed and fabricated. Benefitting from the uniform intrinsic microstructure and increased dielectric constant, when the amount of the Nb 2 CT x nanosheets increases to 15 wt%, the TENG based on Nb 2 CT x /Ti 3 C 2 T x composite nanosheets films achieves the maximum output. The short-circuit current density of 8.06 μA/cm 2 and voltage of 34.63 V are 8.4 times and 3.5 times over that of pure Ti 3 C 2 T x films, and 3.3 times and 4.3 times over that of commercial poly(tetrafluoroethylene) (PTFE) films, respectively. Furthermore, the fabricated TENG could be attached to human body to harvest energy from human motions, such as typing, texting, and hand clapping. The results demonstrate that the alternate-layered MXene composite nanosheet films through layer-by-layer stacking possess remarkably triboelectric performance, which broaden the choice of negative triboelectric materials and supply a new choice for high output TENG.
研究领域:
材料科学
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能源技术
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纳米科技
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DOI
高影响因子
JOURNAL OF MATERIALS RESEARCH
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2023
·Vol. 38
·期 15
·3791-3800
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IF 2.7
Tong Jinling,Yang Dongxu,Liu Xingmin,Lu Shaowei,Wang Jijie,Zheng Boxiong,Zhao Zihan,Song Yutong
Lightweight flexible composite films are widely used in the field of smart and wearable devices due to efficient electromagnetic interference (EMI) shielding effectiveness in the wide frequency domain and excellent mechanical properties. Herein, the CNTs@MXene composite films with excellent mechanical properties and EMI effectiveness were prepared by electrophoretic deposition method on carbon nanotubes (CNTs) substrate. By optimizing the experimental parameters, the optimal deposition time was determined to be 15 min. Meanwhile, the mechanical properties of the 40 μm composite films were the best and the tensile strength reached about 29.2 MPa. Moreover, the composite films with the same thickness showed excellent electromagnetic shielding effects of 69.02 dB and 77.32 dB in X-band and P-band, respectively. The CNTs@MXene composite films showed excellent EMI shielding effectiveness and mechanical properties. Therefore, the composite films showed great advantages and potentials in the application of smart and wearable devices. Graphical abstract
研究领域:
材料科学
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电子工程
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Qi Fan,Ruizheng Zhao,Mengjiao Yi,Ping Qi,Chunxiao Chai,Hao Ying,Jingcheng Hao
Stemming from its unique structure and properties, Ti 3 C 2 -MXenes have stood out from the crowd of electrode materials due to effectively ameliorating imperfections of common ones for excellent energy storage. However, a major stumbling block in the further development of MXene-based supercapacitors is the inherent low capacities caused by severe restacking of nanosheets. Herein, we develop a simple, effective and innovative strategy, namely, introducing both polymerized polypyrrole (PPy) particles and ionic liquid (ILs)-based microemulsion particles as “dual spacers”, to fabricate functionalized Ti 3 C 2 -MXene composite films for high-performance and wide-temperature application in supercapacitors. The PPy particles acting as one “spacer” circumvent restacking issues of MXene nanosheets, while contribute to desirable capacitance of the hybrid material. ILs-based microemulsions spontaneously adsorbing onto PPy-Ti 3 C 2 T x nanosheets are conceived to be one more liquid “spacer” for fast ion diffusion kinetics and absent electrolyte imbibition steps, which is rarely reported in previous research for MXene-based electrode materials. These features endow the composite films with excellent specific capacitance, rate capability and cycling stability between 4 °C and 50 °C. At room temperature, the symmetric supercapacitor device based on the composite films delivers a maximum gravimetric energy density of 31.2 Wh kg −1 (at 1030.4 W kg −1 ) and reserves 91% of the initial specific capacitance with a coulombic efficiency of 91% after 2000 cycles. All these impressive results substantiate that the composite films prepared by ingenious structure design showcase huge potentials in advanced MXene-based supercapacitors using various ionic liquid electrolytes.
研究领域:
材料科学
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能源存储技术
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
·
IF 9.9
Shilu Luo,Qi Li,Yajun Xue,Bing Zhou,Yuezhan Feng,Chuntai Liu
Ultrathin MXene composite films , with their flexibility, metal-level conductivity, and multifunction compatibility, are an ideal choice for electromagnetic interference (EMI) shielding materials in future developments. Nonetheless, the dilemma between electrical conductivity and robustness in these composite films remains a challenge. Herein, an ammonium polyphosphate (APP) assisted interfacial multiple cross-linking strategy, achieved via simple solution blending and filtration, was employed to reinforce and toughen the “brick–mortar” layered MXene/bacterial cellulose (MBCA) films without compromising their conductivity and EMI shielding ability. The introduction of a small amount of APP leads to multiple interfacial interactions between MXene and bacterial cellulose, resulting in significant enhancements in mechanical strength (360.8 MPa), Young's modulus (2.8 GPa), fracture strain (17.3%), and toughness (34.1 MJ/m 3 ). Concurrently, the MBCA film displayed satisfactory conductivity values of 306.7 S/cm and an EMI SE value of 41 dB upon optimizing the MXene content. Additionally, the MBCA film demonstrated a consistent, rapid-response photothermal conversion capability, achieving a photothermal conversion temperature of 97 °C under a light intensity of 200 mW/m 2 . Consequently, this tough and multifunctional EMI shielding film holds substantial promise for protecting electronic equipment.
研究领域:
材料科学
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
Small
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2023
·Vol. 19
·期 52
·2302335
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IF 13.3
Beibei Wang,Weiye Zhang,Chenhuan Lai,Yi Liu,Hongwu Guo,Daihui Zhang,Zhanhu Guo
Strong, conductive, and flexible materials with improving ion accessibility have attracted significant attention in electromagnetic interference (EMI) and foldable wearable electronics. However, it still remains a great challenge to realize high performance at the same time for both properties. Herein, a microscale structural design combined with nanostructures strategy to fabricate TOCNF(F)/Ti 3 C 2 T x (M)@AgNW(A) composite films via a facile vacuum filtration process followed by hot pressing (TOCNF = TEMPO-oxidized cellulose nanofibrils, NW = nanowires) is described. The comparison reveals that different microscale structures can significantly influence the properties of thin films, especially their electrochemical properties. Impressively, the ultrathin MA/F/MA film with enhanced layer in the middle exhibits an excellent tensile strength of 107.9 MPa, an outstanding electrical conductivity of 8.4 × 10 6 S m −1 , and a high SSE/t of 26 014.52 dB cm 2 g −1 . The assembled asymmetric MA/F/MA//TOCNF@CNT (carbon nanotubes) supercapacitor leads to a significantly high areal energy density of 49.08 µWh cm −2 at a power density of 777.26 µW cm −2 . This study proposes an effective strategy to circumvent the trade-off between EMI performance and electrochemical properties, providing an inspiration for the fabrication of multifunctional films for a wide variety of applications in aerospace, national defense, precision instruments, and next-generation electronics.
研究领域:
材料科学
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电子工程
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产品关联
DOI
PubMed
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2023
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IF 8.7
Xiao-Ai Ye,Si-Ying Zhang,Da-Qiang Zhao,Ling Ding,Kan Fang,Xu Zhou,Gui-Gen Wang
2D MXene are showing great prospects for EMI shielding by virtue of abundant surface functional groups and outstanding metallic electrical conductivity . However, it remains a great challenge to simultaneously achieve flexible, lightweight and high stability in MXene shielding materials due to inferior mechanical strength and poor oxidation stability. Gelation paves up an effective and facile strategy to develop highly stable and conductive 3D porous Ti 3 C 2 T x architectures. Herein, super-flexible and highly conductive H-Ti 3 C 2 T x MXene composite films with 3D macro-assemblies for EMI shielding were fabricated through a gelation-densification process initiated by hydrochloric acids, and two-step vacuum-assisted filtration followed by freeze-casting approach. The obtained nanocomposite films manifest satisfactory mechanical properties with a tensile strength of 116.51 MPa, excellent EMI SE of 55.14 dB, superior SSE/t and high EMI SE retention after 5000 cycles of bending deformation. In addition, the as-prepared nanocomposite papers demonstrate outstanding thermal management performances such as rapid response time, high Joule heating temperature (118 °C) at low applied voltage (2.5 V) and eminent working stability (4000 s).
研究领域:
材料科学
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电子工程
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产品关联
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2020
·
IF 6.444
Kunpeng Qian,Qianfan Zhou,Hongmin Wu,Jianhui Fang,Miao Miao,Yuhuan Yang,Shaomei Cao,Liyi Shi,Xin Feng
Well established internal multilayered structures have been demonstrated to contribute greatly towards outstanding shielding effectiveness (SE) in electromagnetic interference (EMI) shielding systems. A specific encapsulation by intercalating carbonized cellulose microspheres into Ti 3 C 2 T x MXene layers (CCM@MXene) is elaborately designed. The CCM@void@MXene composite films with “egg-box” structure are ultimately achieved by annealing treatment with spherical CCM@MXene as “egg” and Ti 3 C 2 T x MXene layers as “box”. The unique structure with interior void space is attributed to internal multiple reflections of incident electromagnetic waves (EMW) and contributes to the enhancement of EMW absorption. Thanks to the electrically conductive network of Ti 3 C 2 T x MXene adhering to cellulose microspheres surface, the egg-box structure composite films exhibit superb electrical conductivity of 1672.0 ± 7.1 S cm −1 and excellent specific EMI shielding efficiency (up to 18637.14 dB cm 2 g −1 ) at an ultrathin thickness (12.1 ± 0.8 μm). This hierarchical porous egg-box structure offers an ideal potential for application in highly efficient EMI shielding systems.
研究领域:
材料科学
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电磁学
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DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
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2025
·
IF 4.6
Zhenchao Gu,Yuanyuan Chen,Jiayi Li,Meng Chai,Lianke Zhang
As an electrode material for supercapacitors, MXene exhibits a natural tendency to stack during electrochemical processes, resulting in a significant degradation of capacitance performance. This study introduced Cu 2 O between MXene nanosheets to enhance the electrochemical performance of the material. Different morphologies of Cu 2 O/MXene films were fabricated through electrostatic self-assembly. Characterization revealed that larger Cu 2 O particles adhered to the edges of MXene nanosheets, while smaller nanoparticles were located between the MXene nanosheet layers. At a current density of 1 A g −1 , the mass specific capacitance of MXene was 240 F g −1 , the porous spherical Cu 2 O/MXene was 316 F g −1 , its specific capacitance reached 509 F g −1 at 0.5 A g −1 , and it maintained a capacitance retention of 69.3 % after 10,000 cycles. The results suggest that the superior electrochemical performance of the composite material can be attributed to the Cu 2 O dispersed on MXene, which provides additional pseudo-capacitance and increases the active sites.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Anqi Zhou,Ziyi Wu,Qiaoqiao Bai,Xianghong Zhang,Xiaowei Li,Hengxin Shen,Huimin Li,Tang Liu,Song Liu
Flexible pressure-temperature dual-functional sensors are crucial for healthcare monitoring and human-machine interfaces, yet their development is hindered by inherent signal interference. To address this challenge, this study presents a flexible, dual-functional sensor that achieves decoupled pressure and temperature detection through a novel heterogeneous sensing architecture. The device integrates a piezoresistive MXene/cellulose nanofiber/chitosan (MCC) composite film with a thermochromic PDMS layer, enabling simultaneous electrical and visual signal outputs. The MCC film exhibits high sensitivity (35.7 kPa −1 ), rapid response (0.25 s), ultralow detection limit (6.5 Pa), and excellent durability (>4400 cycles). The thermochromic layer provides reversible, color-based temperature feedback, ensuring minimal signal interference. This decoupled sensing strategy enables accurate monitoring of physiological signals—including pulse waveforms, respiration, and fracture healing—with strong correlation to clinical indicators. The sensor's simplicity, scalability, and multifunctionality position it as a promising platform for next-generation wearable healthcare technologies.
研究领域:
生物医学工程
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柔性电子学
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转化医学
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智能材料
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可穿戴设备
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生理信号监测
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多功能传感器
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2024
·
IF 11.2
Haonan Zhai,Huibin Liu,Yufen Zhang,Jinjin Wen,Wenyue Yang,Huiting Xu,Xiaoteng Yan,Wenchao Peng,Jiapeng Liu
Aqueous zinc ion batteries (AZIBs) are now gaining widespread attention because of their cost-effectiveness, intrinsic safety, and high theoretical capacity. Nevertheless, it is still crucial to exploit high-performance electrode materials. Herein, the freestanding 1T MoS 2 @Mxene hybrid films (MMHF) were synthesized and directly served as the cathode of AZIBs. The freestanding MMHF exhibited the hierarchical layer structure with excellent conductivity and strong interfacial interaction, which promoted the exposure of more active sites and the transfer of electrons/ions. Consequently, the MMHF displayed a high specific capacity of 270 mAh g –1 (at 0.1 A g –1 ) and good rate performance. Impressively, even after 2500 cycles under 10 A g –1 , the freestanding MMHF cathode contributed a superior specific capacity of 108 mAh g –1 with an outstanding capacity retention rate of 94.7 %. Meanwhile, the energy storage mechanism of the MMHF electrode was also elucidated through ex-situ characterizations. Furthermore, the density functional theory (DFT) computations revealed the strong interfacial interactions between 1T MoS 2 and MXene, high conductivity, and low Zn 2+ diffusion barrier. This work provides a new viewpoint for designing freestanding transition metal disulfides (TMDs) -MXene hybrid film electrodes for AZIBs.
研究领域:
材料科学
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电化学
·
能源存储
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）