COMPOSITES SCIENCE AND TECHNOLOGY
·
2021
·
IF 8.528
Ying Shang,Youxin Ji,Jingwen Dong,Gui Yang,Xiaodong Zhang,Fengmei Su,Yuezhan Feng,Chuntai Liu
The rapid development of electronic devices has led to widespread demand and research on electronic packaging materials with electromagnetic shielding and thermal conductivity (TC) properties due to the inevitable issues of the electromagnetic radiation and thermal accumulation. However, there exists a huge challenge to simultaneously achieve high electromagnetic shielding and TC as well as the electrical insulation requirement as electromagnetic shielding predominantly relies on electrical conductivity of materials. Multilayer structure can endow composite materials with a variety of properties. Therefore, in this work, we fabricated sandwiched cellulose nanofiber/boron nitride nanosheet/Ti 3 C 2 T x MXene films by using a simple and effective alternating vacuum filtration method, and as a result, the special sandwich structure endows the film with excellent electromagnetic shielding, insulation and TC performance. The composite film has an extremely high electromagnetic shielding effectiveness up to 60.7 dB at 8.2 GHz as well as still maintains good electrical insulation properties due to the presence of the CNF/BNNS layer on the surface. Moreover, when the content of BNNS in the CNF/BNNS layer reaches 70 wt%, the sandwiched film has excellent in-plane TC of 19.97 W m −1 K −1 . The sandwiched film with excellent electromagnetic shielding and high TC yet insulation performance has great application value in highly integrated electronic devices.
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2021
·
IF 15.881
Ying Liu,Ziwen Dai,Wang Zhang,Yue Jiang,Jian Peng,Dianlun Wu,Bin Chen,Wei Wei,Xian Chen,Zhenjie Liu,Zhigang Wang,Fei Han,Dahu Ding,Lei Wang,Lina Li,Yingguo Yang,Yang Huang
Polyaniline (PANI) is a promising cathode material for Zn-ion batteries (ZIBs) due to its intrinsic conductivity and redox activity; however, the achievements of PANI in high-performance ZIBs are largely hindered by its instability during the repeated charge/discharge. Taking advantage of the high conductivity, flexibility, and grafting ability together, a surface-engineered Ti3C2Tx MXene is designed as a silver bullet to fight against the deprotonation and swelling/shrinking issues occurring in the redox process of PANI, which are the origins of its instability. Specifically, the sulfonic-group-grafted Ti3C2Tx(S-Ti3C2Tx) continuously provides protons to improve the protonation degree of PANI and maintains the polymer backbone at a locally low pH, which effectively inhibits deprotonation and brings high redox activity along with good reversibility. Meanwhile, the conductive and flexible natures of S-Ti3C2Tx assist the fast redox reaction of PANI and concurrently buffer its corresponding swelling/shrinking. Therefore, the S-Ti3C2Tx-enhanced PANI cathode simultaneously achieves a high discharge capacity of 262 mAh g–1 at 0.5 A g–1, a superior rate capability of 160 mAh g–1 at 15 A g–1, and a good cyclability over 5000 cycles with 100% coulombic efficiency. This work enlightens the development of versatile MXene via surface engineering for advanced batteries.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2020
·
IF 14.588
Shijun Wang,Diansen Li,Yue Zhou,Lei Jiang
The increasing demand for wearable electronics and the intensification of electromagnetic pollution have boosted the exploration of high-performance flexible microwave absorption (MA) materials. Herein, the hierarchical Ti3C2Tx MXene/Ni chain/ZnO array hybrid nanostructures are rationally constructed on cotton fabric for acquiring enhanced MA performance and durable self-cleaning ability. Based on the high dielectric loss capacity of MXenes and ZnO arrays, by controlling dip-coating numbers of Ni chains, the magnetic loss can be manipulated to modulate the impedance matching, reflection loss (RL), and effective absorption bandwidth (EAB, the bandwidth of RL < −10 dB). The minimum RL value of the designed fabric can reach −35.1 dB at 8.3 GHz with a thickness of 2.8 mm, and its EAB can cover the whole X-band with only a 2.2 mm thickness. In addition, the designed fabric also exhibits superior liquid repellency and durable self-cleaning ability due to the combination of the hybrid nanostructures and a superhydrophobic coating. This work provides an insight for rational design of textile-based MA materials, showing potential applications in flexible and wearable functional electronics.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Today
·
2023
·
IF 17.4
Qianqian Qiao,Jinyu Wang,Kai Long,Linwei Li,Jiahao Chen,Yuhao Guo,Ziqiang Xu,Ying Kuang,Tianjiao Ji,Cao Li
Catalytic therapy with enzymes and nanozymes is a promising approach to cancer treatment. However, it often proves inadequate when used as a standalone treatment. This work presents the catalase (CAT)-like activity of Ti 3 C 2 T x MXene , a kind of two-dimensional (2D) material with photothermal capability. Ti 3 C 2 T x nanosheets were then used to load glucose oxidase (GOx) and the anticancer drug doxorubicin hydrochloride (DOX), and modified with polyethylene glycol (PEG) to obtain an enzyme cascade system , named Ti 3 C 2 T x -GOx/DOX-PEG, for anticancer purposes. Ti 3 C 2 T x -GOx/DOX-PEG exhibited a photothermal conversion efficiency of ∼28.7% at 808 nm, enabling its use for near-infrared light-based photothermal therapy (PTT). In addition, Ti 3 C 2 T x could decompose H 2 O 2 to O 2 in cancer cells, thereby enhancing starvation therapy by sensitizing GOx. Furthermore, alleviation of hypoxia could sensitize the chemotherapy of DOX. The decomposition of glucose by GOx could also generate H 2 O 2 for the production of O 2 by Ti 3 C 2 T x . Ultimately, the cycling of the enzyme cascade reaction could alleviate tumor hypoxia and enable enhanced chemo/starvation/photothermal combination therapy. The CAT-like behavior of Ti 3 C 2 T x as well as various enzymatic reactions catalyzed by Ti 3 C 2 T x -GOx/DOX-PEG were systematically investigated by intra- and extracellular experiments. Results from both in vitro and in vivo studies demonstrated the effective anticancer capability of Ti 3 C 2 T x -GOx/DOX-PEG. This enzyme cascade system has the potential to enhance material utilization and reduce side effects, thus opening up new opportunities for designing efficient and safe anticancer systems.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Bin Yang,Haoran Wang,Meiyun Zhang,FengFeng Jia,Yuanqing Liu,Zhaoqing Lu
Undesirable electromagnetic interference (EMI) created by modern electronic devices has detrimental effects on the performance of high-precision electronic devices, information security, and human health. Therefore, lightweight, flexible, robust, and easy-to-fabricate EMI shielding materials with integrated functions are highly desirable to combat electromagnetic pollution. Herein, we report a scalable and facile strategy to prepare a flexible Ti 3 C 2 T x MXene-coated aramid paper (MAP) with high-efficiency EMI shielding and excellent electrical heating performance. The intertwined network by aramid fibers endows the aramid paper (AP) with superior mechanical properties. After selectively single/dual coating with MXene onto AP, the MAP maintains a superior tensile strength of 73.6 MPa and enormous folding endurance of 4156 times. Owing to the exceptional electrical conductivity of MXene, the MAP with a relatively low MXene content (∼9.0 wt%) exhibits excellent overall performance with an EMI shielding effectiveness (SE) of 38 dB and SE/t of 422.2 dB mm −1 . It’s noteworthy that the EMI SE of the MAP remains almost unchanged (37.4 dB) even after experiencing 5,000 repeated bending cycles. Additionally, the MAP shows satisfactory Joule electric-heating capability (a heating temperature rise of 130 °C at a low driving voltage of 5 V) and excellent flame-retardancy. This work provides a feasible strategy for large-scale production of flexible EMI shielding paper with multifunctional properties for future wearable facilities.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 37
·2301587
·
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.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
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.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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.
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULAR MATERIALS AND ENGINEERING
·
2024
·
IF 4.2
Yanli Wang,Wenjing Qin,Xiang Zhou,Enzhao Liu,Yutian Zhu,Shougen Yin,Wenjin Guo,Zunfeng Liu
Flexible wearable sensors have the characteristics of flexibility, comfort, and wearability, and have shown great potential in future electronic products. Despite significant efforts in developing stretchable electronic materials and structures, the development of flexible strain sensors with a wide temperature range, high sensitivity, broad detection range, and good interface stability remains challenging. Here, strain sensors with buckled structures are fabricated using high and low-temperature resistant material Ti 3 C 2 T x MXene/graphene, PDMS 184. The conductive material Ti 3 C 2 T x MXene/graphene exhibits excellent interface interaction with PDMS 184, addressing not only the poor compatibility issue between the conductive material and the flexible substrate, but also demonstrating good stability and cycling performance. Buckled structure improves the stretchability and linearity of strain sensors. The fabricated strain sensor is suitable for a wide temperature range (−40 to 120 °C) and exhibits high stretchability (120% strain). The strain sensor demonstrates rapid response times at different temperatures: −40 (72.6 ms), 0 (62.7 ms), and 120 °C (52.7 ms). The strain sensor exhibits high sensitivity at different temperatures: −40 (GF = 0.38), 0 (GF = 0.24), 40 (GF = 0.66), and 120 °C (GF = 1.47). The strain sensor has a wide detection range (0.1% to 120%) and excellent cycling stability. In addition, Ti 3 C 2 T x MXene/graphene strain sensors can accurately capture various human activities, such as blinking, speaking, finger bending, and wrist bending.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Haoran Peng,Jinhong Yang,Chong Lin,Lixue Qi,Li Li,Keying Shi
In this paper, MOFs-derived transition metal oxides (CuO NPs) were prepared by hydrothermal method combined with the stirring aging method using MOFs as sacrificial templates to realize the growth of CuO NPs octahedra on Ti 3 C 2 T X MXene nanosheets . Due to the synthesized binary heterostructured CuO NPs/Ti 3 C 2 T X MXene materials retain the unique MOFs structures, have abundant heterojunction interface, and owns the advantages of MOFs, such as large specific surface area, abundant active sites, high porosity, and effective oxidative chemical adsorption , the composite sensor shows very significant gas sensing capabilities for NO 2 gas with a gas-sensitive response and response time of 38.54 and 2.84 s, respectively, for 100 ppm NO 2 gas at RT. It achieves an impressively low detection limit of 30 ppb, maintaining stability for up to 10 weeks. This positions it as a highly sensitive NO 2 gas sensor with potential for room-temperature applications.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2024
·
IF 10.7
Chuhan Huang,Tianqin Huang,Xue Liang Li,Wei Zhou,Meng Ding
Two-dimensional transition metal carbides/nitrides (MXenes) have gained considerable prominence in capacitive deionization (CDI) due to their exceptional electrochemical activity and outstanding electronic conductivity. However, the further development of MXenes in practical applications in CDI is hampered by their limited narrow interlayer spacing and oxidation proneness. Herein, a dual-functional surface modification of Ti3C2Tx MXene by sodium ascorbate (SA) is proposed to concurrently enhance the salt adsorption capacity and long-term stability. The modification by SA induces synergistic functions, including the enlargement of interlayer spacing, effective protection of Ti from oxidation, and exceptional electrical conductivity. Simultaneously, this film electrode is designed to be flexible and free-standing, devoid of binders or adhesives, showing promise for the large-scale production of CDI electrodes. Benefiting from these advantages, the SA-modified MXene exhibit excellent desalination performance, including high salt adsorption capacity (109.6 mg g−1), high salt adsorption rates (17.5 mg g−1 min−1), and impressive cycling stability (100% retention after 80 cycles). And the adsorption behavior of SA-modified MXenes is further investigated by in situ X-ray diffraction and density functional theory calculations. This work proposes an effective modification and explores theoretical aspects for fabricating MXene-based electrodes suitable for CDI and other electrochemical applications in moist or aqueous environments.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2024
·
IF 4.1
Yongming Zhu,Hong Sun,Tianyu Zhang,Qiang Li,Zhichao Xue,Mingfu Yu,Jie Li,Xue Wang
Rechargeable lithium-oxygen batteries (LOBs) are acknowledged as potential candidates for advanced energy storage devices as a result of their considerable theoretical energy densities . Nevertheless, they encounter significant challenges throughout discharging and recharging phases, including the difficult decomposition of Li 2 O 2 products, sluggish reaction kinetics, and limited cycle stability. In this study, an efficient catalyst was synthesized by in situ growth of metal–organic frameworks (MOFs)-derived cobalt manganese layered double hydroxide (CoMn-LDH) array on Ti 3 C 2 T x MXene nanosheets (CoMn-LDH@Ti 3 C 2 T x ). The LOBs with CoMn-LDH@Ti 3 C 2 T x cathode demonstrated high discharge specific capacity of 27.61 Ah g −1 at 100 mA g −1 and an extended cycle stability of over 224 cycles at 500 mA g −1 . Density functional theory (DFT) computations showed that CoMn-LDH@Ti 3 C 2 T x facilitates electron redistribution, optimising the adsorption energy of intermediates, thereby lowering the energy barriers for oxygen reduction reactions (ORR) and oxygen evolution reactions (OER). Consequently, this work presents a multi-level nanostructured catalyst preparation strategy derived from MOFs, offering new insights for the fabrication of efficient electrocatalytic materials.
✓ 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）