Materials
·
2022
·Vol. 15
·期 8
·2833
·
IF 3.748
Xiaoming Tang,Ziyi Zhou,Yuehang Jiang,Qian Wang,Qi Sun,Lei Zu,Xing Gao,Huiqin Lian,Minhua Cao,Xiuguo Cui
Ionic electroactive polymer-based actuators have attracted much attention due to their low potential stimuli. In this work, MXene–Nafion composite actuators were fabricated, and the actuation performances were tested. The morphology of the as-made MXene–Nafion composite showed that the composite membrane was homogeneous, with an MXene doping level up to 5 wt%. In addition, the results of blocked force, response speed, and durability demonstrated that the actuation behavior of the composite-based actuator was enhanced due to the efficient dispersion of the two-dimensional nanofiller MXene. In addition, the blocking force of the composite actuator with a doping level of 0.5 wt% was about 6 times that of the pure Nafion without back-relaxation and durability degradation during the testing period.Keywords:MXene;carbon nanotubes;actuation;back-relaxation;ionic electroactive
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2022
·
IF 4.331
Linsheng Huang,Yang Lin,Wei Zeng,Chao Xu,Zhiliang Chen,Qiang Wang,Hewu Zhou,Qitao Yu,Bingtian Zhao,Limin Ruan,Siliang Wang
With the development of transparent and wearable electronic devices, energy supply units with high transmittance and flexibility, long cycle life, and high power and energy density are urgently needed. Zinc ion hybrid capacitors (ZIHCs) combined with the advantages of both supercapacitors and zinc ion batteries are promising energy supply components in the abovementioned devices. In addition, the preparation of multifunctional devices has become a trend for the need of space- and resource-saving. Therefore, obtaining ZIHCs with high transmittance and exploring their potential applications are meaningful challenges. Herein, a transparent and flexible ZIHC composed of a patterned zinc foil anode, transparent MXene cathode, and ZnSO4-polyacrylamide (PAM) hydrogel electrolyte is designed and realized. The ZIHC exhibits a superior capacitance of 318 μF cm–2 (5 mV s–1) with 94% transmittance and retains 76% of the initial capacitance after 10,000 charge–discharge cycles. It also shows excellent flexibility, i.e., its capacitance has no obvious attenuation under different bending states. Interestingly, the leakage current of the ZIHC is highly sensitive to electric fields, which shows potential application in electric field detection. This work presents a method to realize the multifunctional ZIHC with electric field sensing function for transparent and flexible wearable devices in the future.
研究领域:
材料科学
·
能源技术
·
电子工程
✓ 已验证
DOI
高影响因子
AIP Advances
·
2024
·Vol. 14
·期 3
·
IF 1.4
Quan Jingru,Dong Tienan,Shi Zixin,Xv Boqiang,Hu Hengming,Hao Shijie,Fan Haojie,Huang Xinyi,Fan Minmin,Cheng Qichen,Hang Zusheng
The instability of UV anti-corrosion coatings poses a significant threat to both air quality and the environment, highlighting the urgent need for efficient and eco-friendly anti-corrosion coatings. In this study, we synthesized a novel material, MXene, known for its well-defined layered structure and exceptional conductivity, by employing a MAX phase etching process. Our investigation encompassed the assessment of MXene’s compatibility within UV coating systems, as well as its dispersion and stability within composite coating systems. We observed that MXene’s substantial specific surface area and robust chemical adsorption capabilities played pivotal roles in the adsorption and stabilization of nanoparticles within the UV coating. Further exploration of MXene-based UV-curable anti-corrosion coatings revealed remarkable resistance to hydrogen-induced corrosion due to MXene’s outstanding electrical conductivity and its ability to regulate surface chemical reactions. This optimization not only enhances UV-curing and photostability performance in UV anti-corrosion coatings but also makes them highly suitable for producing efficient anti-corrosion coatings. This approach demonstrates broad applicability across various substrates where superior corrosion resistance is essential.
研究领域:
材料科学
·
化学工程
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Junlong Huang,Guangzhong Xie,Qikun Wei,Yuanjie Su,Xiangdong Xu,Yadong Jiang
Degradable wearable electronics offer a promising route to construct sustainable cities and reduced carbon society. However, the difficult functionalization and the poor stability of degradable sensitive materials dramatically restrict their application in personalized healthcare assessment. Herein, we developed a scalable, low-cost, and porosity degradable MXene-polylactic acid textile (DMPT) for on-body biomonitoring via electrospinning. A combination of polydimethylsiloxane templating and MXene flake impregnation methods endows the fabricated DMPT with a sensitivity of 5.37/kPa, a fast response time of 98 ms, and a good mechanical stability (over 6000 cycles). An efficient degradation of as-electrospun DMPTs was observed in 1 wt % sodium carbonate solution. It is found that the incorporation of MXene nanosheets boosts the hydrophilicity and degradation efficiency of active polylactic acid nanofibrous films in comparison with the pristine counterpart. Furthermore, the as-received DMPT demonstrates great capability in monitoring physiological activities of wrist pulse, knuckle bending, swallowing, and vocalization. This work opens up a new paradigm for developing and optimizing high-performance degradable on-body electronics.
研究领域:
材料科学
·
生物医学工程
·
可持续技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2023
·
IF 8.7
Wei Wang,Cheng Wang,Anthony Chun Yin Yuen,Ao Li,Bo Lin,Yao Yuan,Chao Ma,Yu Han,Guan Heng Yeoh
MXene has been the subject of various studies and applications in polymer composites in recent years. However, its compatibility with hydrophobic polymers has been a significant limitation. This study presents a simple way to create MXene frameworks to realise flame retardant hydrophobic polymer composites. The fabrication process is environmentally friendly and low-cost. The PVB/HPUPO/MXene composite membrane showed a 74.7% reduction in volatile intensity during thermal degradation compared to pristine PVB. The PVB/HPUPO/MXene composite membrane also demonstrated significantly improved flame retardancy compared to pure PVB. Specifically, MXene based networks and HPUPO showed synergistic effect in improving the fire safety of PVB composites. This study offers a new approach to incorporating MXene as a flame retardant into conventional phosphorus- and nitrogen-based flame retardant systems for hydrophobic polymers with great fire retardancy.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
·
2022
·Vol. 14
·期 1
·1-14
·
IF 23.655
Yang Zijie,Lv Siyuan,Zhang Yueying,Wang Jing,Jiang Li,Jia Xiaoteng,Wang Chenguang,Yan Xu,Sun Peng,Duan Yu,Liu Fangmeng,Lu Geyu
3D porous crumpled MXene spheres were synthesized by ultrasonic spray pyrolysis technology.
All-MXene transient sensors utilizing porous crumpled MXene sphere as sensing material and MXene films as electrodes were developed, which achieved excellent gas/pressure sensing performance.
Both gas and pressure sensors can achieve rapid and controllable degradation in medical-grade H 2 O 2 (2%) within 6 h.
研究领域:
材料科学
·
传感器技术
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医学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2023
·
IF 10.9
Jiasheng Wei,Lei Dai,Ping He,Meng Zhu,Feng Jiang,Zhaoxiang Zhou,Guiqiang Fei,Tingzhou Lei
MXene-contained paper is a good choice to design ultrathin and flexible electromagnetic interference (EMI) shielding materials. However, the deficiencies in strength and stability of MXene-contained paper impede its practical applications. Herein, a composite paper was proposed to address the problems, in which a filter paper was modified with a three-layer structured surface via a facile layer-by-layer coating procedure. Specifically, the TEMPO-oxidized cellulose nanofibers (TOCN)/cationic starch (CS)/MXene gel layer and TOCN/MXene nacre structure layer ensured the good EMI shielding and mechanical performances of the composite paper, while the uppermost TOCN/CS hydrogel film layer mainly protected MXene. The composite paper achieved an EMI SE of 40.3 dB at a thickness of merely 0.1894 mm (SE/ t value of ca. 212.8 dB mm −1 , SSE/ t values of ca.13216 dB cm 2 g − 1 ) and the total MXene dosage was 20 g m − 2 . Its tensile strength could be up to 11.7 MPa while the original filter paper was 6.4 MPa. Four pieces of this composite papers could be easily packed together to attain an EMI SE of nearly 70 dB. Importantly, the hydrogel film layer efficiently protected the MXene and maintained the EMI shielding performance of the composite paper when immersed in different liquids including water, HCl (1 M) and ethanol, due to the dense and compact structure of hydrogel film layer. This work provides a practical way to develop ultrathin, flexible and durable EMI shielding materials.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2024
·
IF 4.1
Chenyu Wu,Xiuzhen Wang,Ying Zhu,Lei Dong,Jingjing Xu
Titanium dioxide (TiO 2 ) shows promise as an anode material for Li/Na-ion batteries due to its low cost and good cycling stability. However, the limited rate capability and poor conductivity severely limit their practical application. Herein, the nitrogen-sulfur co-doping nano TiO 2 is in-situ constructed on the Ti 3 C 2 T x MXene substrate (SN-TiO 2 @MXene) via facile partial oxidation of MXene. The introduction of S-N heteroatoms, TiO 2 @MXene heterostructures and nanostructures can enhance electronic conductivity, improve ions diffusion kinetics and promote the contribution of pseudo-capacitance. Moreover, the employment of three-dimensional conductive layered MXene parent phase as a substrate material can not only construct the conductive network but also enhance the structural stability of the electrode. The SN-TiO 2 @MXene composite achieves an impressive reversible capacity of 306 mA/g after 1500 cycles at 500 mA/g, and 241.1 mAh/g after 2000 cycles even at a high current density of 2000 mA/g in LIBs. Furthermore, this electrode exhibits a discharge capacity of 105 mAh/g after 1000 cycles at 500 mA/g in SIBs. This study demonstrates that the three-dimensional layered SN-TiO 2 @MXene composites hold promising prospects as anode materials for ion batteries, and offer valuable insights for the fabrication of titanium matrix composites with exceptional electrochemical properties.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
IONICS
·
2022
·Vol. 28
·期 6
·2979-2989
·
IF 2.961
Qi Jiqiu,Gu Huwei,Ruan Chenya,Zhu Lei,Meng Qingkun,Sui Yanwei,Feng Xiujuan,Wei Wenqing,Zhang Hao
MXene, an emerging 2D material, has aroused great concern in the field of supercapacitors owing to its charming properties. However, the relatively low specific capacitance of pristine MXene is unsatisfactory, which is caused by the restacking issue of MXene nanosheets. In this paper, a facile and cost-effective electrostatic self-assembly followed by hydrothermal method was adopted to prepare NiCo 2 S 4 decorated multilayer MXene nanosheets (MXene/NiCo 2 S 4 ). The introduced NiCo 2 S 4 effectively alleviates the self-restacking of MXene nanosheet and facilitates ion accessibility. Hence, the as-prepared MXene/NiCo 2 S 4 electrode displays a maximum specific capacitance of 1211.1 F g −1 at 1 A g −1 , surpassing the NiCo 2 S 4 electrode (938.4 F g −1 at 1 A g −1 ) and pure MXene electrode (84.2 F g −1 at 1 A g −1 ). The assembled asymmetrical supercapacitor utilizing hybrid MXene/NiCo 2 S 4 and RGO delivers a high energy density of 38.7 Wh kg −1 and high power density of 6137 W kg −1 . This work can provide a reliable reference for the synthesis of hybrid MXene/sulfide electrodes with ideal electrochemical performance.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Yan Nie,Jiankun Huang,Shengyan Ma,Zhichao Li,Yongkang Shi,Xiaofang Yang,Xin Fang,Jingbin Zeng,Pengyu Bi,Jiantao Qi,Shengjie Wang,Yongqing Xia,Tifeng Jiao,Dongxiang Li,Meiwen Cao
Silanization is an effective green and pollution-free technology for metal surface treatment. However, the silane film is usually lack of anticorrosion durability due to low mechanical strength and existence of microdefects. In the present study, two-dimensional MXene (Ti 3 C 2 ) sheets have been hybridized into the γ-glycidoxypropyltrimethoxysilane (γ-GPS) film on AA2024 aluminum alloy surface to improve the anticorrosion property. MXene hybridization greatly enhanced the thickness and compactness of the silane film, producing uniform and dense films with fewer defects. The composite films also showed excellent adhesion to the substrate through Si-O-Al chemical bonding. The films inhibited both anode and cathode corrosions by reducing the corrosion current density as well as the diffusion rate of corrosion solution to metal surface. The neutral salt spray tests showed that the corrosion resistance of the MXene-hybridized silane film was better than that of the film obtained by traditional chromate treatment. Moreover, the composite films exhibited excellent antibacterial property by having MXene in the film for killing bacteria. The study develops a simple and effective strategy to improve the anticorrosion property of the silane film as well as to introduce antimicrobial ability, which is highly promising for practical applications in the industrial, medical and domestic fields.
研究领域:
材料科学
·
表面工程
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2018
·Vol. 24
·期 69
·18556-18563
·
IF 5.16
Shuaikai Xu,Yohan Dall'Agnese,Junzhi Li,Yury Gogotsi,Wei Han
Graphical Flexible freestanding hybrid rGO/MXene films with enhanced Li-ion storage capacity are fabricated by vacuum-assisted filtration method followed by a simple thermal treatment. In the hybrid films, reduced graphene oxide nanosheets act as a binder, which bridges electrochemically active conducting MXene particles. The effect of the surface functional group (-OH) on Li-storage performance of MXenes is evaluated. Two-dimensional transition-metal carbides called MXenes are emerging electrode materials for energy storage due to their metallic electrical conductivity and low ion diffusion barrier. In this work, we combined Ti 2 CT x MXene with graphene oxide (GO) followed by a thermal treatment to fabricate flexible rGO/Ti 2 CT r film, in which electrochemically active rGO and Ti 2 CT r nanosheets impede the stacking of layers and synergistically interact producing ionically and electronically conducting electrodes. The effect of the thermal treatment on the electrochemical performance of Ti 2 CT x is evaluated. As anode for Li-ion storage, the thermally treated Ti 2 CT r possesses a higher capacity in comparison to as-prepared Ti 2 CT x . The freestanding hybrid rGO/Ti 2 CT r films exhibit excellent reversible capacity (700 mAh g −1 at 0.1 Ag −1 ), cycling stability and rate performance. Additionally, flexible rGO/Ti 3 C 2 T r films are made using the same method and also present improved capacity. Therefore, this study provides a simple, yet effective, approach to combine rGO with different MXenes, which can enhance their electrochemical properties for Li-ion batteries.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TRIBOLOGY INTERNATIONAL
·
2021
·
IF 4.872
Dongmei He,Meng Cai,Han Yan,Qilan Lin,Xiaoqiang Fan,Lin Zhang,Minhao Zhu
Multiple advantages of Ti 3 C 2 T x MXene are of significance to enhance the mechanical properties of organic coating . Herein, few-layer amino-functionalized Ti 3 C 2 T x nanosheets (k-Ti 3 C 2 ) were introduced into interpenetrating polymers network (IPN) for constructing k-Ti 3 C 2 /IPN composite coatings , and their tribological properties were investigated in depth. The composite coating with 0.75 wt% k-Ti 3 C 2 nanosheets displays excellent tribological behaviors under extremely operating conditions, like the lowest COF (0.18) and the highest OCP value (−0.28 V) under tribocorrosion condition. Such excellent tribological properties mainly depend on good dispersion and interfacial compatibility of k-Ti 3 C 2 nanosheets in IPN matrix, as well as amino functionalized Ti 3 C 2 T x nanosheets as barrier to external damage. This work highlights a pathway to solve the wear/corrosion problem of organic coatings under extreme conditions.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）