APPLIED SURFACE SCIENCE
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2026
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IF 6.6
Li Hao,Tiantian Wang,Tingyu Li,Yiping Sun,Sergey Chizhik,Shujuan Liu,Xuqing Liu,Qian Ye
The formulation and improvement of high-efficiency lubricant additives on the basis of novel two-dimensional MXene materials have drawn increasing attention in recent years. Herein, we report the synthesis of N, P doped Ti 3 C 2 T x MXene using ammonium hypophosphite as the N/P source, followed by surface modification with catechol-containing ionic liquid to obtain ionic liquid-functionalized MXene. Tribological tests reveal that ILs@N, P‑MXene markedly improve the tribological properties of 500SN with 0.75 wt% addition. Compared with the lubricant 500SN, the mean COF is reduced to 0.107, the wear volume decreases by 65.8%, and their load-carrying ability is improved to 650 N from 150 N. XPS analysis indicates that ILs@N, P-MXene undergoes tribochemical reactions with the steel substrates during sliding, forming a continuous and stable protective tribofilm comprising carbonitrides, iron oxides, titanium oxides and iron phosphates. This in-situ formed tribofilm successfully inhibits direct asperity contact between the mating surfaces, thereby endowing the lubricant system with good load-carrying capacity and improved tribological performance.
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高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Tibebu Shiferaw Kassa,Abdurohman Mengesha Yessuf,Ayenew Meniber Mihiretu,Minable Endaye Rass,Mohamedazeem M. Mohideen,Yong Liu
The rapid transition from 5G to 6G wireless technologies has led to a substantial increase in electromagnetic interference (EMI), posing significant challenges to device reliability, signal integrity, and human health. There is an urgent need for lightweight, flexible, and efficient absorption-dominant EMI shielding materials. In this study, we propose a rationally designed coaxial electrospinning strategy to fabricate hierarchical MXene/reduced graphene oxide/polyacrylonitrile core–shell nanofibers. This design integrates a conductive, MXene-rich core surrounded by a reduced graphene oxide/polyacrylonitrile outer shell, encouraging simultaneous optimization of electrical conductivity, impedance matching, and polarization loss to achieve superior EMI shielding performance and thermal blocking. Interestingly, when the reduced graphene oxide to MXene ratio was optimized to be 1:2, the resultant composite nanofiber revealed an EMI shielding effectiveness of 74.38 dB at X-band, a shielding efficiency of 99.99999635%, a high electrical conductivity (169.81 S·cm–1), and an outstanding specific shielding effectiveness of 2.54 × 104 dB·cm2·g–1. Additionally, the sample exhibited effective thermal insulation, with the surface temperature rising by only 41 °C after 1 min of exposure to a 75 °C heat source. These findings highlight the synergy between the high electrical conductivity of MXene, which enables strong internal reflection and ohmic loss, and the interfacial polarization of reduced graphene oxide, which fosters multiple internal reflections that enhance absorption. This optimized, absorption-dominated mechanism provides valuable guidance for designing next-generation lightweight and flexible EMI shielding materials for applications in aerospace, 5G/6G communications, and advanced electronic devices.
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PubMed
高影响因子
JOURNAL OF POWER SOURCES
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2026
·
IF 8.4
Jayandra Bushion,Nithesh Kumar Krishnan,Chih-Yu Kuo,Stalin Thambusamy,Mani Govindasamy,Gaber E. Eldesoky
Developing cost-effective and efficient bifunctional electrocatalysts is critical for sustainable hydrogen production via overall water splitting. Here, we report the rational design and synthesis of a gadolinium nitride-decorated Mxene (Gd-N/Ti 3 C 2 T x ) nanocomposite as a high-performance bifunctional electrocatalyst. The Gd-N/Ti 3 C 2 T x hybrid shows excellent activity toward both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) under alkaline conditions. The optimized electrode exhibits low overpotentials of 315.2 mV for HER and 162.8 mV for OER at 10 mA cm −2 , with Tafel slopes of 142 and 234 mV dec −1 , respectively, indicating favorable kinetics. In a two-electrode alkaline water electrolyzer, Gd-N/Ti 3 C 2 T x achieves 10 mA cm −2 at a cell voltage of 1.74 V, outperforming individual Gd-N and Ti 3 C 2 T x electrodes. The system maintains stable operation at 10 mA cm −2 for 48 h with negligible voltage fluctuation. The enhanced performance arises from strong interfacial coupling between conductive Ti 3 C 2 T x layers and catalytically active Gd-N, which promotes rapid charge transfer, increases electrochemically active surface area, and facilitates reaction kinetics. This work demonstrates Gd-N/Ti 3 C 2 T x as an earth-abundant, durable, and efficient bifunctional electrocatalyst for overall water splitting.
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Haozi Lu,Ziyi Wu,Meiqing Yang,Jifei Yang,Ye Li,Jingrui Zhang,Guangsheng Zeng,Can Hu,Wei Zhou,Song Liu
Hollow Ti 3 C 2 T x MXene nanospheres are synthesized via a sacrificial PS template to boost electroactive surface area. • The sensor achieves high AA sensing performance (0.394 μA·μM −1 , LOD 6.1 μM) covering sweat physiological concentration range. • A CNN-LSTM model is built to predict steady-state current using only 20 s transient chronoamperometric response. Real-time wearable health monitoring is frequently bottlenecked by the slow kinetic equilibrium of electrochemical sensors, which delays data acquisition and hinders high-frequency sampling. To bridge the gap between high sensitivity and rapid readout, this study presents a synergistic sensing strategy coupling hollow Ti 3 C 2 T x MXene nanospheres with a deep learning-enabled predictive algorithm for the detection of ascorbic acid (AA) in sweat. Structurally, the hollow Ti 3 C 2 T x spheres, synthesized via a sacrificial polystyrene template, provide a significantly enhanced electroactive surface area, achieving a high sensitivity of 0.394 μA·μM −1 and a limit of detection of 6.1 μM. Crucially, to resolve the trade-off between measurement accuracy and readout speed, a convolutional neural network–long short-term memory (CNN–LSTM) cascade model was constructed. The CNN–LSTM model predicted the 60 s reference current from the first 20 s transient response, reducing the effective readout time by approximately 67%. Real-sweat validation was further performed using samples collected from five volunteers after exercise, with each sample measured in triplicate. The AA concentrations calculated from the conventional 60 s current-based method ranged from 22.05 to 36.22 μM, while the CNN–LSTM-predicted concentrations showed relative errors of 3.12–11.04% compared with the conventional readout., This integration of advanced hollow nanostructures with transient-signal learning establishes a robust pathway for next-generation wearables requiring instantaneous bio-fluid analysis. Real-time wearable health monitoring is frequently bottlenecked by the slow kinetic equilibrium of electrochemical sensors, which delays data acquisition and hinders high-frequency sampling. To bridge the gap between high sensitivity and rapid readout, this study presents a synergistic sensing strategy coupling hollow Ti 3 C 2 T x MXene nanospheres with a deep learning-enabled predictive algorithm for the detection of ascorbic acid (AA) in sweat. Structurally, the hollow Ti 3 C 2 T x spheres, synthesized via a sacrificial polystyrene template, provide a significantly enhanced electroactive surface area, achieving a high sensitivity of 0.394 μA·μM −1 and a limit of detection of 6.1 μM. Crucially, to resolve the trade-off between measurement accuracy and readout speed, a convolutional neural network–long short-term memory (CNN–LSTM) cascade model was constructed. Unlike traditional methods that await steady-state current (∼60 s), this algorithm extracts deep temporal features from the initial 20 s of the transient chronoamperometric response to accurately forecast the final equilibrium signal. The model demonstrates exceptional predictive accuracy (deviation <2.8%) while reducing the detection latency by approximately 67%. Validated in human sweat samples (29.4 μM AA), this integration of advanced hollow nanostructures with transient-signal learning establishes a robust pathway for next-generation wearables requiring instantaneous bio-fluid analysis. Download: Download high-res image (117KB) Download: Download full-size image
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IONICS
·
2026
·
IF 3.4
Yan Yu,Sun Xiaofei,Yin Shiyu,Chang Qing,Huang Jie,Wang Bei,Le Qinyuan,Jiang Guodong
Cation-disordered rocksalt (DRX) cathodes have emerged as promising candidates for next-generation energy storage due to their high theoretical capacity and reliance on earth-abundant elements. However, their practical implementation is severely limited by inherently sluggish electrical conductivity and restricted Li + diffusion. In this study, we propose a facile structural engineering strategy by incorporating few-layer Ti 3 C 2 T x MXene, prepared via ball-milling, as a multifunctional conductive additive for Li 1.2 Mn 0.4 Ti 0.4 O 2 DRX cathodes. By synergistically coupling 2D MXene nanosheets with conventional 0D carbon black, a robust hierarchical “point-to-surface” conductive network is successfully constructed. Systematic electrochemical characterizations reveal that optimal MXene integration not only serves as a physical protective barrier but also provides accessible sites for transient lithium-ion storage, thereby collectively accelerating Li + /electron transport and mitigating interfacial polarization. Consequently, the optimized composite electrode with 20% MXene additive delivers a remarkably high initial discharge capacity of 203.7 mAh g − 1 at 0.1 C, substantially outperforming the pristine electrode (165.2 mAh g − 1 ), alongside markedly superior rate capability and structural reversibility. This work provides critical mechanistic insights into MXene-mediated modifications and offers a sustainable pathway for the design of high-performance Mn-based DRX cathodes.
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高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Denghui Yang,Yan Wang,Xinhao Liu,Yifang Gao,Ying Chen,Guiying Tian,Songbo Wang,Lei Zhang,Na Tang
MXenes have emerged as promising support materials for Pt nanoparticles due to their large surface area and exceptional conductivity, which can substantially reduce Pt loading while enhancing hydrogen evolution reaction (HER) activity per unit mass of Pt. Consequently, structural optimization of MXenes to simultaneously improve Pt atomic utilization efficiency and interfacial stability has become a critical research focus. This study presents a novel strategy utilizing Ti 3 C 2 T x MXene with engineered Ti vacancies as a support for synthesizing Pt@MXene (PMX- x ) electrocatalysts through a self-reduction stabilization process. Electron paramagnetic resonance (EPR) and X-ray photoelectron spectroscopy (XPS) analyses reveal the presence of Ti vacancies in the MXenes structure at varying concentrations, which are significantly reduced or eliminated upon Pt incorporation, accompanied by strong interactions between Pt and MXenes. Density functional theory (DFT) calculations demonstrated that Pt atoms occupied Ti vacancy sites and achieved optimal hydrogen adsorption free energy (ΔG H* = -0.38 eV), and finally leading to a significantly improved HER kinetics. As a result, the optimized catalyst exhibited superior electrochemical performance in 0.5 M H 2 SO 4 , which was 16.8-fold in Pt mass activity (5.05 A mg·Pt −1 at η = -75 mV) compared to commercial Pt/C (0.30 A mg·Pt −1 at η = -75 mV). This vacancy-mediated anchoring strategy establishes a new paradigm for designing high-efficiency, low-Pt electrocatalysts and demonstrates promising potential for industrial applications.
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高影响因子
Nanoscale
·
2026
·
IF 5.1
Fanjie Shi,Henghan Dai,Ning He,Yang Guo,Yufan Shen,Huifang Wang,Hai Xu,Yuzhen Wang,Gengzhi Sun
Ti3C2TX MXene with good mechanical strength, metallic conductivity and ultrahigh volumetric capacitance is a promising candidate for developing advanced fibers toward the applications of fibrous supercapacitors (FSCs); however, the weak interlayer interaction, random stacking during coagulation and unsuitable channels for ion transport impose crucial difficulties in continuous spinning strong MXene fibers with desirable charge storage ability. Herein, we propose a coaxial spinning strategy accompanying with spontaneous radial densification for the simultaneous achievements of both improved fiber mechanical strength and charge storage capability. The intercalation of sodium alginate (SA) in core (S/M) expands interlayer spacing and produces suitable paths for ion diffusion, while the presence of SA/graphene oxide (S/G) sheath generates radial compression during dehydration because of capillary force, enhances stress transfer within fiber, and avoid short circuit in FSC. The optimized S/M@S/G fiber exhibits a tensile strength of 238 MPa and a volumetric capacitance of 906 F cm−3 at 1 A cm−3. The assembled FSCs provide a capacitance of 153 F cm−3 together with an energy density of 13.6 mWh cm−3. Notably, owing to the improved mechanical properties, FSCs can be weaved into glove and provide power for an electronic watch.
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PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
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IF 8.2
Chenxiang Zhao,Bihua Xia,An Hu,Mingxuan Hou,Ting Li,Shibo Wang,Mingqing Chen,Weifu Dong
This paper established a new kind of L-citrulline-modified MXene cross-linked sodium alginate composite film through solution blending and casting film methods. The L-citrulline-modified MXene cross-linked sodium alginate composite film exhibited high electromagnetic interference shielding efficiency of 70 dB and high tensile strength of 7.9 MPa, which were much higher than the sodium alginate film without L-citrulline-modified MXene. In addition, the L-citrulline-modified MXene cross-linked sodium alginate film appeared humidity responsibility in a water vapor environment, the weight, thickness, and current appeared to increase trend and the resistance appeared to decrease trend after it absorbed water, and these parameters recovered to their original values after drying.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 37
·2301587
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IF 19
Yanli Wang,Wenjing Qin,Min Yang,Zhenhao Tian,Wenjin Guo,Jinkun Sun,Xiang Zhou,Bin Fei,Baigang An,Ruimin Sun,Shougen Yin,Zunfeng Liu
Flexible wearable strain sensors have received extensive attention in human–computer interaction, soft robotics, and human health monitoring. Despite significant efforts in developing stretchable electronic materials and structures, developing flexible strain sensors with stable interfaces and low hysteresis remains a challenge. Herein, Ti 3 C 2 T x MXene/AgNWs/liquid metal strain sensors (MAL strain sensor) with self-healing function are developed by exploiting the strong interactions between Ti 3 C 2 T x MXene/AgNWs/LM and the disulfide and hydrogen bonds inside the self-healing poly(dimethylsiloxane) elastomers. AgNWs lap the Ti 3 C 2 T x MXene sheets, and the LM acts as a bridge to increase the lap between Ti 3 C 2 T x MXene and AgNWs, thereby improving the interface interaction between them and reducing hysteresis. The MAL strain sensor can simultaneously achieve high sensitivity (gauge factor for up to 3.22), high linearity ( R 2 = 0.98157), a wide range of detection (e.g., 1%–300%), a fast response time (145 ms), excellent repeatability, and stability.In addition, the MAL strain sensor before and after self-healing is combined with a small fish and an electrothermally driven soft robot, respectively, allowing real-time monitoring of the swinging tail of the small fish and the crawling of the soft robot by resistance changes.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Man Cai,Xiaochun Wei,Haifu Huang,Fulin Yuan,Cong Li,Shuaikai Xu,Xianqing Liang,Wenzheng Zhou,Jin Guo
Two-dimensional (2D) Ti 3 C 2 T x MXenes show great potential for application in flexible supercapacitors, due to their good hydrophilicity, metallic conductivity and excellent flexibility. Surface modification of the MXenes by heteroatom doping is a good strategy for adjusting the layer spacing and alleviateing various shortcomings. Herein, the ammonium salt decomposition method is shown to allow rapid nitrogen doping into Ti 3 C 2 T x nanosheets at a low temperature of 350 °C. Compared to the raw Ti 3 C 2 T x , the nitrogen-doped Ti 3 C 2 T x (designated N-Ti 3 C 2 T x ) shows an increased layer spacing of 1.451 nm, nitrogen doping levels of 1.42 at% and a low number of residual fluorine functional groups. For the application as an electrode of supercapacitors, the N-Ti 3 C 2 T x electrode shows an outstanding pseudocapacitance performance and mechanical flexibility, with a high specific capacitance of up to 449 F g −1 at 2 mV s −1 , which is 1.4 times that of the raw Ti 3 C 2 T x MXene (i.e., 321 F g −1 ). Furthermore, a quasi-solid-state symmetric supercapacitor assembled with a H 2 SO 4 -PVA gel electrolyte is shown to deliver an energy density of 9.57 Wh kg −1 at 250 W kg −1 . The outstanding pseudocapacitance of the N-Ti 3 C 2 T x is attributed to the positive effect of nitrogen doping on MXene, such as larger layer spacing and the increased number of surface active sites. The strategy presented herein also opens up a convenient and versatile approach for preparing high performance MXene Materials for energy conversion and storage.
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COMPOSITES PART B-ENGINEERING
·
2022
·
IF 11.322
Feng Yang,Junru Yao,Liqiang Jin,Wenjun Huyan,Jintang Zhou,Zhengjun Yao,Peijiang Liu,Xuewei Tao
Nowadays, multifunctional electromagnetic (EM) wave absorbing aerogels have attracted much attention due to intelligent and wearable features for electronic devices. However, the utilization of these aerogels at elevated temperature is still challenge. Herein, we describe a robust strategy to fabricate architecturally controllable and multifunctional Ti 3 C 2 T X MXene/aramid nanofiber (ANF)/polyimide (PI) aerogels with desirable EM wave absorption, adjustable mechanical property, and high thermal insulation . Rational structural design endows the aerogels with an effective absorption bandwidth (EAB) of 4.2 GHz (covering whole X-band) at 250 °C. Exploration of the temperature response over 25–250 °C reveals that the microstructure characters of the aerogels contribute substantially to the EM parameters at elevated temperature, while the in-depth temperature-dependent mechanisms of aerogel EM performance are well studied. Further, through regulating the microstructure, the MXene/ANF/PI aerogels also exhibit tunable mechanical performance (maximum compressive stress of 334.3 KPa at 40% compression) and promising thermal insulation performance (0.029 ± 0.003 W mK −1 , closing to air). These multifunctional aerogels light the way to potential application in the EM wave absorption field of flexible devices at elevated temperature.
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JOURNAL OF SOLID STATE CHEMISTRY
·
2022
·
IF 3.656
Yue Chen,Shaobin Li,Li Zhang,Tao Jing,Jianxin Wang,Lijie Zhao,Fengbo Li,Chao Li,Jingyu Sun
Rational design and constructed new electrode material as high performance electrochemical sensor with outstanding selectivity, reproducibility and stability is an urgent demand for trace detection. Herein, a novel Ce-MOF/Ti 3 C 2 T X MXene composite as electrochemical sensor for L-Tryptophan (L-Trp) was constructed by utilizing the three-dimensional straw-sheaf-like Ce-MOF and Ti 3 C 2 T X MXene nanosheets . The combination of Ce-MOF and Ti 3 C 2 T X MXene not only significantly improves the conductivity of metal-organic framework (MOF) but also effectively prevents the stacking of Ti 3 C 2 T X MXene nanosheets. The electrochemical properties of the proposed sensor were investigated by electrochemical techniques in detail. The L-Trp sensor exhibits a wide linear range (0.2 μM–139 μM) and a low limit of detection (0.19 μM, S/N = 3). Moreover, the proposed sensor exhibits excellent selectivity, good reproducibility and long-term stability, as well as satisfactory practical ability in real blood serum samples.
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