Nature Communications
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2025
·Vol. 16
·期 1
·1-11
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IF 15.7
Bo Zheng,Wang Rui,Wang Bin,Sunny Sanjay,Zhao Yuping,Ge Kangkang,Xu Kui,Song Yajing,Raymundo-Piñero Encarnacion,Lin Zifeng,Shao Hui,Yu Qian,Yan Jianhua,Cen Kefa,Taberna Pierre-Louis,Simon Patrice
Clarifying the relationship between ion desolvation, ion-electrode interactions, and charge storage capacity during ion intercalation in host electrode materials is crucial for advancing fast and efficient energy storage systems. However, the absence of direct evidence for ion desolvation and lack of detailed understanding of the interactions between surface terminations and intercalated cations (Li ions)/solvents hinder the exploration of their effects on energy storage mechanisms. In this paper, we study the intercalation of Li ions from a non-aqueous electrolyte in two-dimensional metal carbides Ti 3 C 2 MXenes with different surface chemistries: HF-Ti 3 C 2 (F-, OH- and O-terminated) and MS-Ti 3 C 2 (O- and Cl-terminated) MXenes. We are able to visualize the full ion desolvation and solvents-ions co-intercalation in the interlayers of MS-MXene and HF-MXene, respectively at the atomic scale. The combination of several techniques and characterization tools reveal that the complete ion desolvation in Cl- and O-terminated MS-Ti 3 C 2 MXenes is associated with the formation of a dense solid electrolyte interface layer, resulting in improved charge storage capacity. The O-rich surface terminations of MS-MXenes are found to be responsible for the efficient Li ions storage. These findings shed lights on identifying the critical role of non-electrostatic ion-electrode interactions and ion desolvation in designing high-performance energy storage devices.
研究领域:
材料科学
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电化学
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DOI
PubMed
高影响因子
RSC Advances
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2025
·Vol. 15
·期 21
·16257-16265
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IF 4.6
Guangyao Zhang,Deqi Fan,Zongze Li,Yingying Li,Yi Lu
Solar-driven interfacial evaporation has emerged as a sustainable solution to address global freshwater scarcity by converting solar energy into thermal energy for efficient water purification. To achieve rapid and energy-efficient steam generation, the development of advanced photothermal materials with optimized light absorption and water activation remains critical. Here, we present a three-dimensional polyvinyl alcohol/chitosan/Nb2C MXene (PCN) hydrogel engineered for high-performance solar evaporation. The composite integrates Nb2C MXene nanosheets into a hydrophilic polymer matrix through hydrogen bonding and electrostatic interactions, forming interconnected microchannels that enable broadband solar absorption (93% across 300–2500 nm) via MXene's plasmonic effects and light-trapping architecture. The synergistic combination of rapid water transport and weakened hydrogen bonding within the hydrated network significantly reduces the evaporation enthalpy to 1426 J g−1. This design achieves an exceptional evaporation rate of 2.72 kg m−2 h−1 and a solar-to-vapor conversion efficiency of 93.2% under 1 sun irradiation, surpassing conventional hydrophilic polymer-based systems. The hydrogel's hierarchical porous structure facilitates effective thermal localization and sustains stable evaporation across varying solar intensities (1–5 sun), demonstrating adaptability for scalable applications. This work provides a rational strategy to design MXene-enhanced hydrogels for practical solar desalination and wastewater purification technologies.
研究领域:
材料科学
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能源技术
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环境科学
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产品关联
DOI
PubMed
高影响因子
Materials
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2025
·Vol. 18
·期 10
·2277
·
IF 3.2
Anyi Zhang,Yiming Wang,Haidong Yu,Yabin Zhang
The advent of the Internet of Things has boosted portable and wearable miniature electronics, especially micro-supercapacitors (MSCs) with excellent integrated performance as well as high-power density and a long lifetime. However, the rational design of electrode material formulations and the construction of three-dimensional (3D) structured electrodes with scalable and cost-effective fabrication remains an arduous task for improving the energy density of MSCs to meet all industrial sector requirements, such as the mass-production of microscale structures, a lasting power supply, and safety. To address these challenges, combining the respective capacitance merits of MXenes and polyaniline (PANI), we propose a constructing strategy for the preparation of a 3D MXene@PANI hierarchical architecture consisting of one-dimensional (1D) PANI nanofibers grown on two-dimensional (2D) Ti3C2MXene nanosheets via extrusion-based 3D printing. Such a 3D architecture not only achieves a high loading mass of MSC electrodes prior to conventional planar MSCs for abundant active site exposure, but it also overcomes the restacking of MXene nanosheets accounting for sluggish ionic kinetics. These features enable the resulting MSCs to deliver excellent electrochemical properties, including a high volumetric capacitance of 1638.3 mF/cm3and volumetric energy density of 328.2 mWh/cm3. This power supply ability is further demonstrated by lighting up a blue bulb or powering an electronic thermometer. This study provides a promising design strategy of the architecture of MXene@PANI composites for high-performance MSCs with 3D printing technology.
研究领域:
材料科学
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能源存储
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纳米技术
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产品关联
DOI
PubMed
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
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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.
研究领域:
材料科学
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环境监测
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医学诊断
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
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2024
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IF 5.1
Jingyu Song,Yongqian Shen,Guibin Zhang,Mingxuan Sun,Mengyao Han,Xueyan Du
While two-dimensional lamellar materials, specifically Ti 3 C 2 T x MXenes, have shown great promise as wave-absorbing materials, the precise design of interlayer spacing poses a persistent challenge. In this study, Ti 3 C 2 T x MXene layers with adjustable interlayer spacings were crafted using a straightforward molecular welding technique. Through the incorporation of Ni nanoparticles onto the Ti 3 C 2 T x MXene layers using a combination of simple mechanical stirring and carbonation reactions, we successfully developed Ti 3 C 2 T x MXene/Ni/C composites featuring a distinct lamellar structure. A uniform dispersion of Ni nanoparticles on the surface of the Ti 3 C 2 T x MXene nanosheets was found with some of the nanoparticles intercalated into the layers. The Ti 3 C 2 T x MXene/Ni/C composites exhibited a maximum reflection loss (RL) value of −42.3 dB at 12.3 GHz, accompanied by an impressive effective absorption bandwidth (EAB) of 5.6 GHz. This outstanding absorption performance could be attributed to various factors, including the dielectric loss of the Ti 3 C 2 T x MXene lamellae, reflections and scattering of multiphase heterostructures, the magnetic loss of the Ni nanoparticles, and their synergistic attenuation. Furthermore, Ni nanoparticles with high electrical conductivity induced vortex currents under the alternating influence of electromagnetic waves (EMWs), resulting in a substantial depletion. This study introduces an innovative approach for synthesizing Ti 3 C 2 T x MXene/Ni/C composites with tunable interlayer spacing, showing their potential for applications in microwave absorption (MA).
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
ACS Applied Materials & Interfaces
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2024
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IF 8.3
Changzhou Du,Hongjian Zhang,Xiaofei Liu,Shengyang Zhou,Yanan Ma,Shuxuan Li,Yong Zhang
Flexible pressure sensors are intensively demanded in various fields such as electronic skin, medical and health detection, wearable electronics, etc. MXene is considered an excellent sensing material due to its benign metal conductivity and adjustable interlayer distance. Exhibiting both high sensitivity and long-term stability is currently an urgent pursuit in MXene-based flexible pressure sensors. In this work, high-strength methylcellulose was introduced into the MXene film to increase the interlayer distance of 2D nanosheets and fundamentally overcome the self-stacking problem. Thus, concurrent improvement of the sensing capability and mechanical strength was obtained. By appropriately modulating the ratio of methylcellulose and MXene, the obtained pressure sensor presents a high sensitivity of 19.41 kPa–1 (0.88–24.09 kPa), good stability (10000 cycles), and complete biodegradation in H2O2 solution within 2 days. Besides, the sensor is capable of detecting a wide range of human activities (pulse, gesture, joint movement, etc.) and can precisely recognize spatial pressure distribution, which serves as a good candidate for next-generation wearable electronic devices.
研究领域:
材料科学
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电子皮肤
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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
Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
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IF 15.7
Wang Jiaqi,Liu Yue,Yang Ganceng,Jiao Yanqing,Dong Youming,Tian Chungui,Yan Haijing,Fu Honggang
Anion exchange membrane seawater electrolysis is vital for future large-scale green hydrogen production, however enduring a huge challenge that lacks high-stable oxygen evolution reaction electrocatalysts. Herein, we report a robust OER electrocatalyst for AEMSE by integrating MXene (Ti 3 C 2 ) with NiFe sulfides ((Ni,Fe)S 2 @Ti 3 C 2 ). The strong interaction between (Ni,Fe)S 2 and Ti 3 C 2 induces electron distribution to trigger lattice oxygen mechanism, improving the intrinsic activity, and particularly prohibits the dissolution of Fe species during OER process via the Ti-O-Fe bonding effectively, achieving notable stability. Furthermore, the good retention of sulfates and the abundant groups of Ti 3 C 2 provide effective Cl - resistance. Accordingly, (Ni,Fe)S 2 @Ti 3 C 2 achieves high OER activity (1.598 V@2 A cm -2 ) and long-term durability (1000 h) in seawater system. Furthermore, AEMSE with industrial current density (0.5 A cm -2 ) and durability (500 h) is achieved by (Ni,Fe)S 2 @Ti 3 C 2 anode and Raney Ni cathode with electrolysis efficiency of 70% and energy consumption of 48.4 kWh kg -1 H 2 .
研究领域:
材料科学
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电化学
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可再生能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Russian Journal of Physical Chemistry A
·
2025
·Vol. 99
·期 3
·620-628
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IF 0.8
Lei Bai,Cheng Fangming,Dong Yuting
Antimony sulfide (Sb2S3) possesses a high theoretical capacity and excellent reversibility, making it a promising anode material for lithium-ion batteries (LIBs). However, its poor intrinsic conductivity and significant volume changes during charge/discharge cycles severely limit its cycling stability and rate performance. In this study, a novel composite material was synthesized by electrostatically assembling Sb2S3 nanowires (Sb2S3 nw) onto MXene nanosheets as a potential anode material (SbSMX). The introduction of highly conductive MXene substrates enhances electron transfer between the distinct interfaces of Sb2S3 and MXene. Additionally, the constructed 1D–2D structure promotes ion transport within the electrode, while the mechanical flexibility of MXene effectively mitigates the severe volume expansion of Sb2S3. As a result, the SbSMX composite exhibits a high capacity of 813 mA h g–1 at a current of 50 mA g–1, stable cycling performance with a capacity of 735 mA h g–1 after 100 cycles at 100 mA g–1 (88% retention), and excellent rate capability, achieving 466 mA h g–1 at a current of 3 A g–1.
研究领域:
材料科学
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能源存储
✓ 已验证
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-11
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IF 14.7
Liu Xianhu,Zhang Wenrui,Zhang Xin,Zhou Zhengui,Wang Chunfeng,Pan Yamin,Hu Bin,Liu Chuntai,Pan Caofeng,Shen Changyu
The rational use and conversion of energy are the primary means for achieving the goal of carbon neutrality. MXenes can be used for photothermal conversion, but their opaque appearance limits wider applications. Herein, we successfully develop visible-light transparent and UV-absorbing polymer composite film by solution blending the MXene with polyethylene and then vacuum pressing. The resulting film could be quickly heated to 65 °C under 400 mW cm −2 light irradiation and maintained over 85% visible-light transmittance as well as low haze (<12%). The findings of the indoor heat insulation test demonstrate that the temperature of the glass house model covered by this film was 6-7 °C lower than that of the uncovered model, revealing the potential of transparent film in energy-saving applications. In order to mimic the energy-saving condition of the building in various climates, a typical building model with this film as the outer layer of the window was created using the EnergyPlus building energy consumption software. According to predictions, they could reduce yearly refrigeration energy used by 31-61 MJ m −2 , and 3%-12% of the total energy used for refrigeration in such structures. This work imply that the film has wide potential for use as transparent devices in energy-related applications.
研究领域:
材料科学
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能源工程
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光热转换
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产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2024
·
IF 8
Zhaorui Zhang,Haiying Du,Huashuai Hu,Dongchen Tan,Jinkui Chu,Minghui Yang
Two-dimensional transition metal carbon nitrides (MXenes) are a prominent class of functional materials with significant potential for sensing applications. However, their conventional charge transfer mechanisms pose limitations for detecting nitrogen dioxide (NO 2 ). In this study, we successfully design-synthesized potassium titanate (KTO) nanoribbons by oxidizing and alkalizing monolayer Ti 3 C 2 T x MXene, targeting room-temperature NO 2 detection. The Ti 3 C 2 T x -derived KTO exhibited exceptional selectivity for NO 2 , achieving a remarkable response of 649.2 % for 50 ppm NO 2 , which is 550 times higher than that of the Ti 3 C 2 T x sensor (1.18 %). Additionally, the sensor demonstrated a detection limit as low as 5 ppb at room temperature, along with rapid response (1 s) and recovery times (2 s), and excellent linearity. Computational analysis showed that the abundant OH groups on the KTO surface contribute to strong selective adsorption (2.79 |eV|) and efficient electron transfer (0.91 |e|) for NO 2 . The unique proton conduction mechanism of KTO further reduced the activation energy for proton transport, enhancing NO 2 sensing performance. This study highlights the potential of Ti 3 C 2 T x -derived KTO nanomaterials for advanced room-temperature NO 2 detection and sensor technology development.
研究领域:
材料科学
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传感器技术
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环境监测
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产品关联
DOI
高影响因子
ACS Applied Polymer Materials
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2024
·
IF 4.4
Liya Lin,Xin Jing,Gangrong Wang,Jian Yang,Yaoxun Zhang,Jiazhou Zeng,Chongzhao Zhang,Xianggui Liu
MXene has been widely used in hydrogels due to its high electrical conductivity and surface tunability. However, its self-stacking behavior hinders its further utilization. To address that, we proposed a nanoengineering strategy that used sulfonated polyurethane nanoparticles (PU) to modify MXene, aiming to improve its dispersibility in the hydrogel precursor solution via the hydrogen bonding interactions between the sulfonic acid groups of PU and the oxygen-containing groups of MXene, which not only avoid the self-stacking of MXene but also endow the prepared hydrogel with ultrathinness of 32 μm, great stretchability of 1834%, high toughness of 385.6 KJ/m3 as well as great puncture resistance, whose puncture displacement reached 85 mm at a thickness of 300 μm. Moreover, the hydrogel was also assembled as a strain sensor to monitor the human motions in real-time and recognize different hand gestures for human-machine interfaces. Furthermore, the hydrogel was capable of working as electrodes to assemble the trioelectric nanogenerators to power small devices for continuous energy supply. Overall, the developed ultrathin hydrogel fabricated via the nanoengineered MXene exhibited great potential in wearable electronics for flexible sensing, human-computer interaction, and self-powered devices.
研究领域:
材料科学
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生物医学工程
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电子工程
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
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2024
·
IF 5.3
Ran Chang,Jing Ma,Yanyun Hou,Jianzhong Xu
Graphene oxide (GO)-based membranes have exhibited fascinating superiority in water treatment. However, water transfer resistance caused by the tortuous interlayer pathway and swelling in aqueous solutions of GO membranes are still bottlenecks in wastewater treatment. Here, a heterostructured GO membrane was designed by intercalating amino-terminated MXene (MXene-NH2) in GO layers. Specifically, the inserted MXene-NH2 with a small size in the gap of GO layers can increase the vertical distance between GO layers and offer a shortened water transport pathway for enhanced permeability. Meanwhile, the interaction between the amino groups of MXene-NH2 and the carboxyl groups of GO can restrict the deformation of the layered structure, thus inducing improved stability. Accordingly, the obtained GO/MXene-NH2 composite membrane exhibited a flux of about 11.31 L/(m2 h bar) at low pressure (1 bar), which was 4 times higher than that of the GO membrane (̃2.73 L/(m2 h bar)). Meanwhile, high rejections of the membrane for different charged dyes (≥96%) remained. Besides, the GO/MXene-NH2 membrane showed excellent antiswelling properties. This strategy provides a method for the design of a heterostructure membrane and promotes the practical application of the GO membrane.
研究领域:
材料科学
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环境科学
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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）