ACS Applied Materials & Interfaces
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2019
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IF 8.456
Luyang Liang,Ruishu Yang,Gaojie Han,Yuezhan Feng,Biao Zhao,Rui Zhang,Yaming Wang,Chuntai Liu
Two-dimensional Ti3C2Tx MXene-based hybrids-anchored magnetic metal nanoparticles show a huge potential application as effective wave absorbers due to the synergistic electromagnetic (EM) loss effect. In this work, uniform and size-controllable nickel, cobalt, or nickel–cobalt alloy nanoparticles were in situ grown on the surface of MXene via a facile and moderate co-solvothermal method for the first time. As an example, a nickel nanoparticles-anchored MXene (Ni@MXene) hybrid was homodispersed into dielectric polyvinylidene fluoride to develop its EM wave-absorbing capacity to a great extent. As expected, the results showed strong reflection loss (RLmin = −52.6 dB at 8.4 GHz), broad effective absorption bandwidth (EAB = 3.7 GHz including 71% of X-band), low loading (10 wt % Ni@MXene), and thin thickness (3.0 mm). By adjusting the sample thickness, EAB can cover completely the whole X-band with a maximum of 6.1 GHz, showing a huge potential of Ni@MXene hybrid applying as aircraft stealth coating. The mechanism analyses revealed that the excellent impedance matching, magnetocoupling effect, conductance, magnetic loss, and multiple scatterings contribute to the splendid EM wave-absorbing performance of the Ni@MXene hybrid. Considering the excellent overall performance, the Ni@MXene hybrid was identified as a promising candidate for EM wave absorption.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-9
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IF 15.7
Chen Hao,Lu Gongxun,Cao Zhenjiang,Zhu Qi,Ye Yuxuan,Gao Yuxuan,Shi Yu,Zhao Qi,Li Bin,Du Zhiguo,Tao Xinyong,Yang Shubin
Although commercial lithium-ion batteries have been widely used in portable electronics and electric vehicles, they are still plagued by the uncontrollable dendritic lithium under extreme conditions. Herein, an efficient strategy is developed to produce a MXene-configured graphite via an electrostatic interaction between MXene and silane coupling agent-modified graphite. Typically, MXene layers are adhered onto the basal plane of graphite, with good preservation of the uncovered lateral edges of graphite, effectively strengthening the adsorption energy of Li + and reducing the lithium nucleation energy barrier. Moreover, the MXene interface possesses good lattice compatibility with Li (110) plane, greatly promoting the homogeneous growth of Li along the preferable plane under extreme conditions. Even at −20 °C, Ah-level pouch cell with MXene-configured graphite electrode delivers a high capacity retention of 93% after 1200 cycles (273 Wh kg −1 ) at 1 C, exceeding lithium-ion batteries with bare graphite electrode (43% capacity retention, 191 Wh kg −1 ).
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高影响因子
ACS Applied Energy Materials
·
2025
·
IF 5.5
Yuan Du,Xiaoying Liao,Fanyu Xie,Xiaoyu Jia,Xiyang Dong,Hongwei Li,Mei Zhang
Flexible supercapacitors are promising energy storage devices for smart wearable fields. Achieving simultaneously their high energy density and actual applications is still challenging for portable supercapacitors assembled by MXene electrode materials. In this study, the microfluidic combined wet-spinning strategy and vacuum-assisted film forming technology are proposed to fabricate three-dimensional MXene fiber fabrics (3DMFF) with an ordered, porous, and interconnected network structure. The 3DMFF electrodes exhibit an excellent specific areal capacitance of 6925 mF cm–2 at a current density of 5.0 mA cm–2 in a three-electrode system. The sandwich structure symmetric supercapacitors constructed by the 3DMFF electrodes can still achieve a high specific areal capacitance of 4531.3 mF cm–2, a large energy density of 402.8 μWh cm–2 at a power density of 2000 μW cm–2, and a reversible charge/discharge stability. The flexible supercapacitors show good bending deformation ability and can power several miniaturized electronic devices to realize the practical application.
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AICHE JOURNAL
·
2025
·
IF 4
Zhengyi Huang,Mengmeng Jia,Yanna Wu,Haojie Chen,Shuming Li,Zong Lu,Yanying Wei,Haihui Wang
Nanofiltration (NF) membranes with sub-nano structure are promising for the extraction of lithium from brine resources, yet often face a trade-off between separation efficiency and permeation rate. Here, the ultrathin nanocomposite membranes (TFN AM ) with high Li + /Mg 2+ selectivity and permeability are prepared by introducing the positive aminated-MXene interlayer in the process of interfacial polymerization (IP). This interlayer modulates the diffusion behavior of amine monomers and reduces the thickness of the polyamide (PA) layer by six times; meantime, it provides excellent positive charge on the membrane surface. The aminated-MXene interlayer endows the high positive charge density of TFN AM enhancing the Donnan exclusion effect on the improvement of Li + /Mg 2+ selectivity. As a result, the TFN AM exhibits a high permeability of 12.5 L m −2 h −1 bar −1 and a Li + /Mg 2+ selectivity of 17.5, while maintaining performance over 100 h. This work proposes a facile and effective strategy to address the challenge of NF membrane limitations and advance lithium recovery technologies from brines.
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CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Zhipeng Yang,Hongqiang Li,Shifeng Zhang,Xuejun Lai,Xingrong Zeng
Flexible and wearable pressure sensors have attracted considerable attention for the wide application prospect in robot sensing, intelligent electronic skin and healthcare monitoring. Herein, a superhydrophobic MXene-coated carboxylated carbon nanotubes (C-CNTs)/carboxymethyl chitosan (CCS) aerogel with honeycomb-like porous microstructure was proposed for piezoresistive pressure sensor. Firstly, a C-CNTs/CCS aerogel with superior robustness, resilience and durability was fabricated via directional freeze-drying method. Secondly, the C-CNTs/CCS aerogel was dip-coated with a layer of MXene nanosheets and then chemically modified with 1H,1H,2H,2H-perfluorooctyltriethoxysilane (FAS). The obtained F-MXene@C-CNTs/CCS aerogel demonstrated superhydrophobicity and the water contact angle and artificial sweat contact angle reached 157° and 154°, respectively. Thanks to the synergism of the dual-conductive MXene-CNTs network, the aerogel-based pressure sensor realized fast response time (62 ms), wide detection range (up to 80 kPa) as well as excellent electrical stability and repeatability even under humid and sweaty environments. Additionally, the sensor was successfully applied for monitoring human motions including not only large-scale actions (joint movements, walking and running) but also small-scale muscle movements (pronunciation recognition and finger tapping). Interestingly, the sensor connected to an Arduino microcontroller circuit with Bluetooth module was able to wirelessly detect real-time movements of finger joints. Our findings conceivably stand out as a new strategy to fabricate high-performance piezoresistive pressure sensors for wide applications even at special working conditions.
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FlatChem
·
2023
·
IF 6.2
Yue Zhang,Zheng Wang,Xiaohao Liu,Yating Liu,Yuxuan Cheng,Daxiang Cui,Feng Chen,Wentao Cao
Biosensors with high sensitivity to sweat composition analysis are essential for non-invasive, real-time physiological monitoring of individual health status. However, it is challenging to construct a well-conductive and stable interface for electrochemical sensors. Here, we construct a sensitive sweat biosensor for ascorbic acid (AA) quantification built on a heterostructure with three-dimensional (3D) linked network microstructures made from two-dimensional (2D) MoS 2 nanosheets and 2D Ti 3 C 2 MXene. The as obtained 2D/2D heterostructures presented numerous active sites and avoid the issue of reduced surface areas, which was generally brought on by the accumulation of 2D nanomaterials. The electrode modified with 2D/2D heterostructure could realize efficient electron transport by abundant accesses to absorb AA molecules. Based on the inherent conductivity, extremely porous structure, and active catalytic properties of 2D/2D heterostructures, the biosensor for detecting the AA in artificial sweat had a sensitivity of 54.6nA μM −1 and a detection limit of 4.2 μM. This study provided a new promising approach for the design of high-performance sensing interfaces and facilitated the widespread use of personalized diagnostic devices.
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APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Teng Guo,Yuan Lei,Xin Hu,Guang Yang,Jie Liang,Qiang Huang,Xiancai Li,Meiying Liu,Xiaoyong Zhang,Yen Wei
Ti 3 C 2 is regarded as the most popular MXene, which has been extensively investigated as a candidate for fabrication of adsorbents to remove environmental pollutants. However, the adsorption capacity of unmodified MXene is limited owing to the lack of specific adsorption sites. In this work, we reported a simple hydrothermal method for preparation of Ti 3 C 2 -MoS 2 composites and examined their adsorption removal of organic pesticide paraquat (PQ) for the first time. The adsorption equilibrium will reach within 30 min and the adsorption capacity was increased from 8.7 mg/g to 105.53 mg/g as compared with that of Ti 3 C 2 . The adsorption process is more inclined to follow the Freundlich isotherm model and quasi-second-order kinetic model, which points to that the adsorption process is multilayer adsorption and may followed both physical adsorption and chemical adsorption. Adsorption of PQ on Ti 3 C 2 -MoS 2 is a spontaneous exothermic process and many factors, such as temperature, pH values, and ion strength can influence the adsorption performance. The obvious increase of adsorption performance of Ti 3 C 2 -MoS 2 might be ascribed to the increase of specific surface area after the introduction of flower-like MoS 2 . More than that, PQ also might be catalytically degraded by Ti 3 C 2 -MoS 2 for its semiconductor property.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Amr Osman,Hui Liu,Jian Lu
Wearable sensors are becoming a vital element of newly developed smart devices for their significant prospects in health monitoring, motion detection, and human–machine interactions. Introducing a cost-effective strategy to fabricate pressure sensors with high sensitivity, compressibility, recoverability, and linearity, while also maintaining control over the structure, is a challenge in the development of scalable and high-performance wearable devices. Herein, a fused deposition modelling (FDM)-assisted dip coating is performed to fabricate highly porous pressure sensors with gyroid topologies derived from 3D-printed sacrificial molds. A layer-by-layer dip coating is proposed to obtain a uniform conductive layer over elastomer-based scaffolds using negatively and positively charged MXene nanosheets. The porous sensor based on the self-assembled MXene demonstrates a high sensitivity (9.859 kPa −1 ) in an extensive linearity range of up to 50 kPa, negligible hysteresis, and good stability up to 1750 cycles. Additionally, the sensor exhibits high temperature sensitivity (4.349 % °C −1 ) with superb linearity (up to 100 °C). The distinctive sensing and deformation mechanisms are elucidated in detail using in situ SEM and finite element analysis. By tuning the lattice structure of the sensors, the pressure sensitivities can be significantly improved to 34.43 kPa −1 and 84.47 kPa −1 within the pressure ranges of 12–34 kPa and 34–55 kPa, respectively. The gyroid-derived pressure sensor exhibits promising potential in diverse applications, including pulse rate monitoring, phonation, and motion activities. A 4 × 4 sensor array is assembled to provide real-time spatial pressure mapping. Furthermore, the wearability of the sensor can be tailored to introduce user-specific products.
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ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Zonglin Liu,Xu Zhao,Fuhua Xue,Liangliang Xu,He Chen,Zhong Chen,Qian Yan,Jinhua Xiong,Haowen Zheng,Pengyang Li,Huanxin Lian,Yunxiang Chen,Qingyu Peng,Xiaodong He
MXenes, a burgeoning family of 2D materials with high conductivity and large specific surface area, are ideal electromagnetic absorbing materials. However, the ample polar functional groups lead to poor dispersion in the non-polar matrix, limiting its application in non-polar-polymer-based composites. With the help of the shear rheological properties of SiO 2 , the conflict is resolved here by directly dispersing MXene aqueous dispersion into the non-polar resin. Water is locked dynamically through SiO 2 nanoparticles among the MXene@SiO 2 nanosheets, suppressing MXene's self-restacking and aggregation in the resin matrix. Therefore, the fabrication of uniform MXene/non-polar polymer composites is achieved. Meanwhile, this method allows different nanoparticles (Fe 3 O 4 , etc.) to be evenly dispersed among the MXene nanosheets to further improve the composites' electromagnetic parameters. The as-prepared composites achieve remarkable absorbing performance with a low MXene concentration (≤5 wt.‰). The SMEP-h achieves the maximum reflection loss value of over 60 dB at 12 GHz (at the thickness of 2.15 mm), and the SMEP-F possesses a broad effective absorbing bandwidth of over 6.18 GHz (at the thickness of 1.75 mm). The shear-rheological-assisted MXene dispersion method in the non-polar matrix paves an avenue for the design of outstanding MXene-based electromagnetic absorbing composites.
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CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2025
·
IF 3
Li Ouhang,Wang Bo,Liu Yong,Gao Xinxin,Zhang Kan,Sun Peng,Liu Fangmeng,Lu Geyu
The sensitive and selective detection of ppb-level (ppb: parts per billion) H 2 S using miniaturized and portable gas sensor is of great significance in environmental monitoring, medical diagnosis and many other fields. MXenes, with high electrical conductivity, large surface area, and abundant active sites, hold great promise for room temperature gas sensing applications. In this work, a room temperature H 2 S sensor was constructed utilizing Mo 2 CT x MXene sensitive material, synthesized by a typical LiF/HCl etching method. The H 2 S sensing characteristics of Mo 2 CT x sensor were further improved by controlling ultrasonic time and optimizing heat-treated temperature. The M-50 sensor utilizing optimized Mo 2 CT x sensing material exhibited good selectivity, the highest response value (−39.92%) to 1 ppm (ppm: parts per million) H 2 S, and the lowest detection limit of 30 ppb (theoretically 0.35 ppb). The enhanced H 2 S sensing properties are largely attributed to the fragmented nanosheet structure and surface defects caused by prolonging ultrasonic time and adjusting treatment temperature. Additionally, density functional theory (DFT) calculations demonstrated that surface Mo atom vacancy and edge of Mo 2 CT x could significantly improve the adsorption ability of H 2 S. The present work contributes to advancing exploration of Mo 2 CT x material in sensing applications.
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高影响因子
COMPOSITES COMMUNICATIONS
·
2024
·
IF 6.5
Yifan Zhang,Wenlong Pan,Yuliao Dong,Jianning Ding,Lin Xu
Conductive hydrogels have emerged as significant materials within the domain of soft electronics, attributed to their remarkable stretchability, high sensitivity, and rapid response characteristics. In this study, we successfully developed a novel conductive hydrogel, named NAM, which integrates MXene nanosheets into a P(NIPAm-AAc) network to create a dynamic crosslinked structure. This NAM hydrogel exhibits exceptional mechanical properties, including a tensile strength exceeding 1400% and the ability to adhere to objects of different materials. It also demonstrates satisfactory electrical conductivity (0.233 S/m) and high sensitivity (GF=3.384), with rapid response and recovery time of 60 ms. The NAM hydrogel sensors are capable of detecting a wide range of strains (0-800%) and maintaining excellent repeatability in cyclic loading-unloading. They can effectively monitor subtle facial micro-expressions, laryngeal vocalizations, and human motion data, and can be integrated into soft robotic systems for enhanced functionality. The findings suggest significant potential applications for the NAM hydrogel in soft robotics, flexible electronic skin, smart health monitoring, and biomedicine, highlighting its multifunctional capabilities in the realm of soft electronics.
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高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2025
·
IF 9.8
Zi-Long Zhang,Liang Tao,Jing-Wen Wang,Ying-Jie Ma,Yang Zhang
The focus on composite films with high dielectric properties is largely attributable to their extensive range of applications in electrical equipment. Nevertheless, there is a recognized issue concerning the fact that the dielectric properties of the materials do not fully satisfy the mounting performance requirements in practical applications. In this work, the heterostructure of MnO 2 grown on the surface of 2D transition metal carbide Ti 3 C 2 MXene doped with carbon quantum dots (CD-MnO 2 @MXene) has been successfully obtained through hydrothermal reaction. CD-MnO 2 @MXene was combined with poly (dimethyl siloxane)-based copolymers (D-PDMS) to form the PDMS-based dielectric composites (CD-MnO 2 @MXene/D-PDMS) via solution casting method. The CD-MnO 2 @MXene/D-PDMS composite containing 2.17 vol% of CD-MnO 2 @MXene exhibits an enhanced dielectric constant of 42.2 at 100 Hz, which is 12 times and 1.58 times higher than that of the pure matrix and the CD@MXene/D-PDMS composite, meanwhile the loss is only 0.07. These results validate that the CD-MnO 2 @MXene/D-PDMS composite possesses excellent dielectric properties and low energy loss compared with other nanocomposites, thus can be widely used in advanced electronic devices such as actuators and sensors.
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