MEASUREMENT
·
2026
·
IF 6.1
Jiacheng Fan,Yueying Chang,Yibo Di,Qixun Xia,Libo Wang,Jia Yang,Aiguo Zhou
MXene-fabric TENG shows linear response to twist, fold, stretch for sensing. • TENG detect pressure down to 0.27 Pa for blinking, facial, swallowing monitoring. • TENG is integrated for real-time wrist monitoring and joint injury prevention. Herein, a Triboelectric Nanogenerator (TENG) was constructed as flexible self-powered sensors with excellent performance for smart sensing. Ti 3 C 2 MXene paste is directly coated on the surface of cotton fabric as conductive layers of the TENG. The conductive layer is encapsulated by silicone rubber films, which also work as triboelectric layers of the TENG. The sensor shows an excellent linear response to stretching, twisting and folding deformation, demonstrating its capability for quantitative deformation measurement without external power supply. More importantly, the sensor possesses ultra-low-pressure detection capability (as low as 0.27 Pa), and thus can accurately recognize physiological activities such as blinking, facial micro-expressions, and swallowing with high sensitivity. Furthermore, it was integrated into a human–computer interaction system as a complete measurement and instrumentation platform, to monitor wrist movement during dumbbell training in real-time and provide feedback on the correctness of the movement to reduce the risk of joint injury. This study provides a low-cost, simple, and highly sensitive solution for smart wearable devices with well-defined input–output relationship and stable dynamic response, offering important applications in sports health monitoring, joint protection, and flexible self-powered measurement systems. In this paper, a flexible self-powered sensor based on a Triboelectric Nanogenerator (TENG) was designed by spin-coating MXene paste as conductive layers. The sensor exhibits excellent linear responses to twisting, folding, stretching, as well as an ultra-low pressure detection limit of 0.27 Pa. It accurately detects physiological activities such as blinking and swallowing and is integrated into a human–computer interaction system to monitor wrist movements during dumbbell training for joint protection. This work presents a low-cost, sensitive wearable sensor with well-defined input–output relationship for self-powered measurement systems. Download: Download high-res image (114KB) Download: Download full-size image
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JOURNAL OF POWER SOURCES
·
2026
·
IF 8.4
Weijie Lin,Yuanhaobo Yang,Jiaxing Zhang,Qin Yang,Yingchun Gu,Runfang Fu,Bin Yan,Sheng Chen
The integration of electrochromic and energy storage functionalities into a single device offers a promising pathway toward smart energy management, yet the practical application of electrochromic supercapacitors (ECSCs) is hindered by the poor electrical conductivity, sluggish ion diffusion, and inadequate cycling stability of transition metal oxide electrodes, such as WO 3 . Although various nanostructuring and hybrid strategies have been explored, achieving a simultaneous enhancement in optical modulation, switching speed, and long-term durability remains challenging. To address these issues, we herein report a facile self-assembly strategy to construct conductive MXene-based heterostructures with WO 3 ·2H 2 O nanoparticles, yielding WO 3 ·2H 2 O/MXene (WM) composite thin-film electrodes. The optimal heterostructure (WM-7.5) exhibits enhanced conductivity and enriched electroactive sites, facilitating rapid ion/electron transport. This results in significantly improved optical modulation ( ΔT = 62% at 700 nm) and accelerated switching kinetics (coloration/bleaching times of 4.5/4.0 s). Moreover, MXene serves as a conductive scaffold that buffers volume changes and suppresses active material aggregation, endowing the electrode with exceptional cycling durability (82% capacitance retention after 10,000 cycles). Furthermore, a complementary ECSC device assembled using WM-7.5 and Prussian Blue achieves a high optical modulation ( ΔT = 61%), and fast switching (1.6/2.4 s). This work provides a general and effective route for designing high-performance, multifunctional ECSCs through rational heterostructure engineering.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Di Wu,Liya Lin,Jian Yang,Xin Jing
Overcoming the mechanical deterioration typically induced by polydopamine (PDA)-assisted dispersion of nanofillers remains a challenge in conductive hydrogels. Herein, we proposed an acid-hydrolysis nanoengineering strategy that transforms this interfacial trade-off into synergistic enhancement. First, PDA and waterborne polyurethane (WPU) are sequentially introduced to effectively inhibit MXene restacking through combined coordination and hydrogen bonding. Then, the acid-catalyzed hydrolysis step is applied to hydrolyze the amide bonds of polyacrylamide to in situ generate an acid induced network reconstruction accompanied by the formation of carboxyl/imide related functional groups and increased network densification, directly countering the mechanical compromise. Consequently, the obtained hydrogel (H-PUDMP) exhibits remarkable integrated properties: high fracture strain (1782%), enhanced fracture stress (0.43 MPa), and good conductivity (6.09 mS·cm–1). Moreover, the hydrogel displays a segmented temperature-resistance response, enabling broad-range and self-compensating temperature sensing. Moreover, it is capable of monitoring human motion in real time as a wearable sensor. When being assembled into a TENG, it achieves an output of 210 V and a power density of 5.13 W·m–2, demonstrating self-powering capability. Based on these superior sensing capabilities, the hydrogel is integrated into a Bluetooth-enabled smart glove, which successfully demonstrates accurate gesture recognition. Therefore, this acid-catalyzed hydrolysis strategy provides a paradigm for nanoengineering hydrogel electronics, transcending the conventional trade-offs between conductivity, mechanical strength, and functionality.
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高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Feng Ye,Xiaojun Pan,Bo Wei,Xiangxiong Feng,Yixuan Zhou,Miao Guo,Yuxuan Tao,Xin Xia,Chao Xu
A defect-driven self-reduction strategy is proposed to exploit intrinsic Ti vacancies in Ti 3- x C 2 T 2 MXene to induce spontaneous reduction and atomic stabilization of Pt without external reducing agents. • The resulting Pt/Ti 3- x C 2 T 2 HD catalyst exhibits excellent acidic HER performance. • Pt/Ti 3- x C 2 T 2 HD achieves ultra-low Pt loading (1.16 wt.%) with low overpotential (42 mV @ −10 mA cm –2 ) and stable operation for 100 h at −50 mA cm –2 . • Strong Pt-Ti interaction and vacancy-induced charge redistribution optimize ∆G H * and d -band center, boosting activity. Engineering metal-support interactions at the atomic scale is critical for maximizing noble-metal utilization in hydrogen evolution electrocatalysis. Here, we report a defect-driven self-reduction strategy that exploits intrinsic Ti vacancies in Ti 3- x C 2 T 2 MXene to induce spontaneous reduction and atomic stabilization of Pt without external reducing agents. The vacancy-rich MXene framework simultaneously serves as an electron reservoir and anchoring template, enabling atomic-scale Pt dispersion at an ultra-low loading of 1.16 wt.%. The optimized Pt/Ti 3- x C 2 T 2 HD catalyst demonstrates excellent HER activity and durability in 0.5 M H 2 SO 4 , requiring low overpotentials of 42 and 95 mV at -10 and -100 mA cm –2 , respectively, while delivering enhanced mass activity and turnover frequency 8.7 and 8.5 times higher than commercial Pt/C and maintaining stable operation at -50 mA cm –2 for 100 h. DFT calculations reveal that Pt substitution at Ti vacancies of MXene generates abundant Pt-Ti-Ti threefold hollow sites with near-thermoneutral hydrogen adsorption free energies (∆G H *≈ -0.02 eV), while Pt-Ti d-orbital hybridization and directed charge transfer synergistically optimize the electronic structure, balancing hydrogen adsorption-desorption kinetics. This work highlights defect engineering of MXenes for support mediated noble-metal reduction and provides a rational design strategy for atom-efficient HER electrocatalysts. Pt atoms are atomically anchored on Ti vacancies of MXene via a defect-driven self-reduction strategy, achieving an ultra-low loading of 1.16 wt.% with a low overpotential of 42 mV at -10 mA cm –2 and 100 h stability at -50 mA cm –2 , attributed to the intrinsic Ti vacancies serving as both anchoring sites and electron donors for spontaneous Pt reduction. Download: Download high-res image (323KB) Download: Download full-size image
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Jiangtao Cui,Wenzhe Han,Zhuoran Hou,Xiangfeng Feng,Gaosen Wang,Huayu Zhang
The layered hydroxides are endowed with a large specific surface area that enables a massive utilization in super capacitors. However, they have low conductivity which confines the electrochemical response in the layered hydroxide (LDH). The proposed research involved a one-pot synthesis procedure based on hydrothermal approach in order to get a composite material made of Ti 3 C 2 T x -MXene, Cobalt-Vanadium-Aluminum layered double hydroxide (CoVA1-LDH), and coated nickel foam. The combination of Ti 3 C 2 T x -MXene and CoVAl-LDH composite material exhibited a good value of electrochemical activity (1938.45 F g −1 ), which is 1 A g −1 in a three-electrode system. With the use of 5000 charge discharge cycles, and a high rate of current density of 10 A g −1 , it retained 79.8% of the initial capacitance. Further, the fabricated Ti 3 C 2 T x -MXene/CoVAl-LDH//AC apparatus achieved maximum energy density of 51.57 Wh kg −1 at the power density of 800.0 W kg −1 . Following 10, 000 cycles of the cycling at 10 A g −1 , it demonstrated the good capacitance retention rate of 89.1% which indicates good cycling stability. Rational structural design may be considered an effective approach to enhance the properties of materials, and this article gives new insights into the structural design of MXene/LDH composites.
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JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2026
·
IF 3.1
Zhao Xiaole,Zhang Guanglei,Guo Yitong,Di Yibo,Wang Libo,Chang Yukai,Zhou Aiguo
This study develops high-performance zinc-ion battery cathodes through dual engineering of vanadium-alloyed MXene and its heterointerface with sodium vanadate (NaV 3 O 8 ·1.5H 2 O, NVO). By selectively etching (Ti 1-x V x ) 3 AlC 2 MAX precursors (NaF/HCl, 60℃, 48 h), we synthesized (Ti 1-x V x ) 3 C 2 MXene solid solutions where V-substitution optimizes electron conductivity. When composited with NVO, the 20 wt% (Ti 0.7 V 0.3 ) 3 C 2 /NVO cathode delivers remarkable specific capacities of 221.6 mA h g −1 at 10 A g −1 – surpassing pure NVO by 4.0-fold and Ti 3 C 2 /NVO by 2.5-fold – and maintains 195 mA h g −1 after 5,000 cycles (1.7 times of pure NVO and 4.1 times Ti 3 C 2 /NVO), outperforming state-of-the-art vanadate cathodes. Mechanistic analysis reveals that while NVO enables reversible Zn 2+ redox reaction, the V-alloyed MXene simultaneously constructs a 3D conductive network suppressing electrode degradation and creates low-energy Zn 2+ migration channels at interfaces via lattice distortion. Collectively, this interface engineering strategy unlocks ultra-stable zinc storage at practically high rates (10 A g −1 ), providing a pathway for next-generation zinc storage cathode.
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ANALYTICAL CHEMISTRY
·
2026
·Vol. 98
·期 29
·21514-21524
·
IF 7.3
Xiao Jiaxin,Lu Guoci,Yuan Haoran,Wu Yangtao,Zhu Shumin,Bu Lingjun,Zhou Shiqing
The pervasive contamination of groundwater
by highly
toxic oxyanions
necessitates advanced sensing technologies capable of high-throughput
screening. To overcome the intrinsic single-analyte limitation of
conventional ion-selective electrodes (ISEs), we developed a biomimetic
sensor array inspired by the cross-reactive principles of biological
taste systems, which was constructed by self-assembling quaternary
ammonium salts (QACs) with tailored alkyl chain lengths (Cn) within
MXene interlayers (MXene/QAC-Cn). When integrated with a machine learning
model, the array successfully enabled the simultaneous identification
of four kinds of oxyanions (CrO 4 2– , SeO 4 2– , BrO 3 – ,
and ClO 4 – ) with a discrimination accuracy
of 97.1%. The sensor demonstrated exceptional sensitivity, achieving
a detection limit of 1.2 × 10 –9 M, and a 32-fold
enhancement in analytical throughput compared to single-analyte approaches.
Theoretical calculations revealed that the confined microenvironment
of the MXene/QAC-Cn composite promotes partial dehydration of the
oxyanions, reducing the adsorption energy by 1.09 eV. This mechanism
is pivotal for generating high-quality and differentiable response
fingerprints, which in turn ensures the high accuracy of the machine
learning model. The programmable design of this platform underscores
its potential for extension to a broader spectrum of oxyanions, offering
a versatile and scalable solution for comprehensive water quality
monitoring.
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高影响因子
Journal of Cleaner Production
·
2026
·
IF 10.7
Zhanwei Guo,Minming Zou,Wenxing Luo,Chao Qiang,Jue Wang,Wenjing Chen,Yan Ma,Qinglin Li,Xiongxin Jiang,Tao Xu,Xiaowu Hu
Waste-derived MS was upcycled as the main photothermal filler. • Aligned channels and GLYMO network enabled water transport and stability. • STA/Raman analyses supported confined-water enthalpy reduction. • AgNWs coupled with MS enhanced evaporation performance. Solar-driven interfacial evaporation offers an efficient route for alleviating freshwater scarcity, but its practical performance strongly depends on the rational integration of photothermal fillers, water-transport pathways, and thermally insulating matrices. Herein, MXene sediment (MS), a byproduct generated during MXene preparation, was reutilized as a waste-derived photothermal filler and incorporated with a low loading of silver nanowires (AgNWs) into a GLYMO-crosslinked poly (vinyl alcohol)/polyacrylamide (PVA/PAAm) aerogel. The vertically aligned microchannels and superhydrophilic polymer network provided continuous water transport, while the GLYMO-reinforced organic–inorganic network improved structural robustness. In addition, the broadband absorption of MS and AgNW-assisted optical enhancement enabled a solar absorptance of approximately 95%. Under 1 sun illumination, the optimized PPAMS 20 @AgNWs evaporator achieved an evaporation rate of 3.21 kg m −2 h −1 and an effective-enthalpy-based solar-to-vapor efficiency of approximately 97%. It also exhibited stable repeated-operation performance over 25 cycles and good salt-resistant behavior under the tested high-salinity conditions. This work demonstrates a potential strategy for converting MS into a functional photothermal filler for solar-driven seawater desalination. Working Principle, Testing, and Exploration of the PPAMS Interface Evaporator. Download: Download high-res image (310KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Tiankun Hui,Yajing Yang,Fei Diao,Haihan Fan,Jie Chen,Yan Li,Yingjie Song,Chenchen Fu,Meijie Jia,Wenwei Han,Tengbo Yu,Jianye Fu
A nerve guidance conduit (NGC) based on MXene-MnO₂ hydrogel is developed for the regeneration of peripheral nerves. • The NGC possesses the dual advantages for promoting Schwann cell proliferation and alleviating chronic inflammation. • The NGC can actively regulate the neural regeneration microenvironment and promote angiogenesis. • The NGC can promote neurofilament formation, remyelination and prevent muscle atrophy. Peripheral nerve regeneration remains a major challenge in clinical due to persistent inflammatory microenvironments and oxidative stress that impede functional recovery. In this study, we designed a bio-responsive nerve guidance conduit (NGC) based on a MXene-MnO₂ nanocomposite hydrogel that actively orchestrates the regenerative microenvironment through material-mediated biological crosstalk. Unlike conventional passive conduits, our system leverages the unique properties of two-dimensional MXene to enhance Schwann cell proliferation, while MnO₂ nanoparticles act as catalytic anti-oxidative modules that continuously neutralize ROS and resolve chronic inflammation. This dynamic intervention promotes a timely immune transition to shift macrophages from M1 to M2 phenotype, which facilitates angiogenesis within the injury site. In vivo tests further revealed that the treatment group not only exhibited increased neurofilament number and reduced muscle atrophy but also showed significantly enhanced remyelination. The modular design and catalytic microenvironment-regulation strategy represent a new direction in neural interface engineering. This work provides a scalable and effective platform for advanced neural repair applications and material-guided immunomodulation in regenerative medicine. Illustration of nerve regeneration promoted by MXene-MnO₂ nanocomposite hydrogel NGCs via scavenging ROS and facilitating macrophage polarization towards the M2 phenotype. Download: Download high-res image (265KB) Download: Download full-size image
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ACS Sensors
·
2026
·
IF 10.9
Liu Jiahao,Tang Xueming,Zhang Lei,Tian Ruobing,Wang Xinli,Miao Bin,Sun Yuanna,Wang Junbo,Yang Hao,Zheng Wanxiang
Conductive hydrogels are promising for wearable electronics; however, freezing and dehydration of their water-rich networks often compromise mechanical compliance, electrical conductivity, and sensing reliability. Here, we report a deep-eutectic-solvent-enabled polyampholyte/MXene eutectogel constructed from a betaine/ethylene glycol deep eutectic solvent (DES), a dynamically crosslinked polyampholyte network formed from sodium p -styrenesulfonate (NaSS) and quaternized dimethylaminoethyl acrylate (DMAEA-Q), and MXene nanosheets. MXene establishes the principal conductive pathways, while DES-mediated molecular interactions alter the local electronic structure of representative polyampholyte-associated complexes. Density functional theory calculations show that replacing water with DES redistributes the frontier molecular orbitals and decreases the calculated HOMO–LUMO energy difference of the NaSS-DMAEA-Q complex from 4.60 to 4.34 eV, consistent with a more favorable local charge-transfer environment. Correspondingly, at the same MXene loading, the DES-based eutectogel reaches a conductivity of 1.51 S/m, more than twice that of the water-based hydrogel (0.71 S/m). The DES hydrogen-bonding network also suppresses crystallization and solvent evaporation, while reversible ionic-pair interactions provide high deformability and adhesion. This formulation exhibits a fracture strain of approximately 630%, an adhesion strength of 47.9 kPa, a crystallization peak at –74.3 ° C, and 94% mass retention after 30 days. The resulting sensor enables strain, pressure, temperature, and respiratory monitoring. Furthermore, integration with an STM32-based signal-acquisition system and a deep neural network enables four-class recognition of respiratory signals collected from the mouth, nose, abdomen, and chest, achieving an internal validation accuracy of 95.06%, while a threshold-based warning module provides real-time identification of apnea-like respiratory interruptions.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Huihui An,Junhong Lv,Yang Cheng,Xuanye Zhao,Xinfang Wang,Enguang Ma,Xibang Chen,Xing Zhang,Wenjie Meng,Jinwen Qin,Minhua Cao
The synergistic triple dipole constructs a dipole electric field in G(H + )-MXene. • G(H + )-MXene exhibits outstanding Li storage capacity and temperature adaptability. • The flexible G(H + )-MXene//AC pouch cell retains 87.1% capacity after 10,000 cycles. Lithium-ion capacitors (LICs) often suffer from kinetic mismatch between capacitive cathodes and battery-type anodes, limiting their wide-range temperature applicability. Herein, we propose an interfacial dipole engineering strategy to address this challenge by modifying Ti 3 C 2 T x MXene with protonated guanine (G(H + )) to yield G(H + )-MXene. Density functional theory (DFT) calculations reveal that the energy difference between the charge neutrality level (E CNL ) of G(H + ) and the Fermi level (E f ) of Ti 3 C 2 T x can drive directional interfacial charge redistribution. The resulting charge-transfer dipole between Ti 3 C 2 T x and G(H + ) couples with the intrinsic molecular dipole of G(H + ), the surface dipole of MXene, and the dipole induced by newly formed Ti N bonds. This synergy generates a robust interfacial dipole electric field that significantly accelerates Li + transport and lowers the associated energy barrier. Consequently, the assembled G(H + )-MXene//activated carbon LIC delivers high energy and power densities, exhibits impressive wide-temperature operability (from 40 to −40 °C), and maintains remarkable flexibility even when bent to 180°. This work provides a promising strategy for tailoring the interfacial structure of MXenes to overcome performance bottlenecks in wide-temperature energy storage systems. Download: Download high-res image (160KB) Download: Download full-size image
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ACS Applied Electronic Materials
·
2026
·
IF 4.7
Junlin Wang,He Li,Tianyu Luo,Sisi Liu,Xiaoyan Wen,Haifei Lu,Ming-Yu Li
Abstract Colloidal quantum dot (CQD) infrared (IR) photodetectors exhibit great application potential in the fields of optical communication, environmental monitoring, imaging, and wearable sensing. Specifically, AgBiS2 CQD IR photodetectors have garnered extensive attention because of their excellent photoelectric properties, solution-processability, as well as non-toxicity and environmental friendliness. However, the high trap density and relatively low carrier mobility of AgBiS2 CQDs have limited their development in high-performance IR photodetectors. Herein, a representative 2D transition carbide, Ti3C2Tx, is introduced into the AgBiS2 CQD films to develop enhanced IR photodetectors based on MXene/AgBiS2 hybrid films. By finely controlling of the MXene additive concentration, this combination possibly helps reduce trap state density in AgBiS2 films to suppress carrier nonradiative recombination and simultaneously constructs an efficient conductive pathway in AgBiS2 films to enhance the extraction of photo-generated carriers. Consequently, compared to the pristine AgBiS2 CQD devices, the MXene/AgBiS2 CQD-based infrared photodetector exhibits significant promotion in the responsivity, EQE, and estimated normalized detectivity under a broad band from 500 to 900 nm, demonstrating an alternative method for tailoring the performance of AgBiS2 CQD optoelectronic devices.
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