INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2020
·
IF 3.573
Yang Lu,Zhenyi Wang,Wangxi Fang,Yuzhang Zhu,Yatao Zhang,Jian Jin
Porous polymeric support membranes with outstanding organic solvent resistance are highly required for fabricating thin-film composite (TFC) organic solvent nanofiltration (OSN) membranes. In this work, we report the fabrication of a high-permeance TFC-OSN membrane by the use of a polytetrafluoroethylene (PTFE) microfiltration membrane loaded with single-walled carbon nanotubes coated by a polydopamine (PD/SWCNT) network film (named the PD/SWCNT/PTFE composite membrane) as the support. Through interfacial polymerization between m-phenylenediamine and trimesoyl chloride, a polyamide (PA) thin film has successfully grown on the surface of the PD/SWCNT/PTFE composite membrane. The resulting PA TFC-OSN membrane exhibits a high methanol permeance up to 13.2 L m–2 h–1 bar–1 with a rejection rate of 89.6% to 6-hydroxy-2-naphthalenesulfonic acid sodium salt (HNSA, Mw = 246.21). Moreover, the rejection rates of the PA TFC-OSN membrane to various dyes remain unchanged before and after DMF activation, indicating that it possesses an excellent resistance to organic solvents.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Pan Luo,Shuyuan Dong,Lirong Liang,Fengxia Kuang,Chunyu Du,Zhenqiang Ye,Guangming Chen
Integrated flexible thermoelectric (TE) fabric demonstrates great potential for wearable energy harvesting and intelligent temperature sensing. However, existing TE fibers often struggle to simultaneously satisfy requirements for high and stable TE performance, favorable weavability, sweat resistance, and good biocompatibility. Herein, continuous PEDOT:PSS/SWCNT composite fibers with these desirable features are obtained via a convenient freeze-thaw-induced gelation process assisted wet-spinning process, exhibiting a high electrical conductivity of 1960 S cm −1 , a large power factor of 59.6 µW m −1 K −2 , and a high tensile strength of 103 MPa. Polyurethane-encapsulated composite fibers further provide superior mechanical flexibility, desirable weavability, remarkable washability, low-temperature tolerance, and stable TE performance over 1000 bending/twisting cycles. A resulting TE fabric comprising 32 p-type legs achieves a power density of 60.1 µW cm −2 at temperature difference of 50 K, surpassing most reported PEDOT:PSS-based fiber devices, and retains over 95% performance after various mechanical deformations. The developed fabric-integrated intelligent fever monitoring system (forehead/wrist/armpit) exhibits high sensitivity (alarm response < 5 s) and good repeatability (3–4.3 s response over 50 cycles) for low/high fever monitoring. Such composite TE fibers are anticipated to advance practical applications of wearable TE fabrics in body energy harvesting, personalized healthcare, and intelligent fitness monitoring.
研究领域:
材料科学
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可穿戴电子学
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热电学
·
生物医学传感
·
柔性器件
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yusheng Wang,Xiaoliang Ma,Yinhong Zhuo,Yunfei Zhang,Qiao Zhang,ChakYin Tang,ChiPong Tsui,Feipeng Du
The high Seebeck coefficient ( S ) of inorganic semiconductors is expected to compensate for the low S of single-walled carbon nanotubes (SWCNT) with high electrical conductivity ( σ ). In this work, nano-Fe modified MoO 3 (Fe@MoO₃) has been synthesized by hydrothermal method. Then, high- S Fe@MoO 3 has been integrated with high- σ SWCNT for enhancing thermoelectric performance. The prepared Fe@MoO 3 /SWCNT exhibits an optimal power factor of 339.9 ± 16.7 μW m −1 K −2 with enhanced σ of 1125.7 ± 64.2 S cm −1 and the S of 55.0 μV K −1 , which is approximately three times that of the original SWCNT. The performance improvement is attributed to the nano-Fe in Fe@MoO 3 , which tailors the internal electric field of MoO 3 and compensates for electron capture from SWCNT through carrier mobility regulation, thereby effectively optimizing both σ and S . Furthermore, a thermoelectric module consisting of six pairs of p-type legs and copper wires is assembled, which demonstrates an optimal normalized power density of 2.42 μW cm −2 K −1 . For application demonstration, a temperature alarm device is built based on the thermoelectric module, which can be set to trigger alarms at different temperatures from 0 °C to 200 °C with a sensitivity of ±1 °C. Therefore, this work provides new insights into the preparation of SWCNT composites with enhanced thermoelectric performance.
研究领域:
材料科学
·
纳米技术
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热电材料
·
能量转换
·
传感器
✓ 已验证
DOI
高影响因子
Green Energy & Environment
·
2016
·
IF 0
Weiwei Li,Shimou Chen,Jia Yu,Daliang Fang,Baozeng Ren,Suojiang Zhang
In spite of silicon has a superior theoretical capacity, the large volume expansion of Si anodes during Li + insertion/extraction is the bottle neck that results in fast capacity fading and poor cycling performance. In this paper, we report a silicon, single-walled carbon nanotube, and ordered mesoporous carbon nanocomposite synthesized by an evaporation-induced self-assembly process, in which silicon nanoparticles and single-walled carbon nanotubes were added into the phenolic resol with F-127 for co-condensation. The ordered mesoporous carbon matrix and single-walled carbon nanotubes network could effectively accommodate the volume change of silicon nanoparticles, and the ordered mesoporous structure could also provide efficient channels for the fast transport of Li-ions. As a consequence, this hybrid material exhibits a reversible capacity of 861 mAh g −1 after 150 cycles at a current density of 400 mA g −1 . It achieves significant improvement in the electrochemical performance when compared with the raw materials and Si nanoparticle anodes.
研究领域:
材料科学
·
能源科学
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产品关联
DOI
ACS Applied Energy Materials
·
2022
·
IF 6.959
Jun Li,Renjie Chen,Yong Luo,Jinming Shi,Xinxin Sheng,Yuhui Xie,Hua Wu,Delong Xie,Yi Mei
Organic phase-change materials (OPCMs) are one of the most preferred media for thermal energy storage (TES) applications but are troubled by their low thermal conductivity, leakage, and flammability problems. Herein, stearyl alcohol (SAL), as an OPCM, was first chemically bonded with phosphorus oxychloride (POCl3) to reduce its flammability and then encapsulated in a single-wall carbon nanotube (SWCNT) skeleton to address the low thermal conductivity and leakage issue, obtaining a flame-retardant form-stable phase-change material film (PCMF). As a result, a promising heat storage capacity (191.3 kJ/kg) and superior thermal stability of the modified SAL were achieved as evaluated via differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) testing. Then, microscale combustion calorimetry (MCC) testing was carried out, showing that the peak of the heat release rate (PHRR) and total heat release (THR) of the modified SAL were, respectively, reduced by 24.4% and 24.3% compared to bare SAL. After encapsulating the modified SAL into the SWCNT skeleton, the PHRR and THR values of the as-prepared PCMF can be further reduced because of the synergistic effect between the phosphorus group and the SWCNT skeleton, while the electrical and thermal conductivity of the PCMF were significantly improved, simultaneously. In addition, the obtained PCMF presented excellent light-to-thermal conversion and thermal energy storage performance. Thus, the strategy presented in this work provides a general method to extend the OPCMs application with superior flame-retardant properties.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2023
·Vol. 27
·期 6
·1493-1500
·
IF 2.5
Chang Zenghua,Mou Lisha,Shao Zechao,Ou Mei,Fan Tianchi,Li Bin,Wu Shuaijin,Wang Rennian,Wang Jiantao
Silicon as one of the most promising anode materials suffers from its low electronic conductivity and large volume changes during the lithiation/delithiation processes, resulting in a huge capacity fading upon cycling. Herein, we design a single-wall carbon nanotube (SWCNT) coating on the silicon/carbon (Si/C) electrode to improve its cycling performance. By this simple configuration, the commercial Si/C electrode delivers a high reversible capacity of 653.8 mA h g −1 at current density of 65 mA g −1 and exhibits excellent cycling stability with capacity retention 79.8% after 150 cycles. As expected, the SWCNT layer on the surface of electrode improves the electronic conductivity of the electrode and serves as a barrier layer to prevent the electrode surface from cracking and delaminating, which gives the best reversible capacity and longer life cycle. This design can eliminate much more complicated processes for providing some potential in commercial applications.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yuxin Fu,Xiuchen Wang,Gege Hang,Yanan Wang,Zhe Liu
A dual-conductive fiber has been engineered with a continuous “ion-electron” network. • The fiber achieves both a capacitance density of 633 F cm −3 and a strength of 247 ± 18.5 MPa. • The fiber supercapacitor shows a high energy density of 41.1 mWh cm −3 . • Supercapacitors have successfully powered a wristwatch, demonstrating their practicality. The rapid development of wearable electronics has created an urgent need for flexible energy storage devices that combine high energy density with fast charging and discharging capabilities. However, the poor intrinsic ionic transport properties of PEDOT: PSS severely limit the efficiency of charge storage and release. To address this critical challenge, this study constructed a highly efficient “ion-electron” dual-continuous synergistic transport network within one-dimensional fibers by regulating the doping concentration of the ionic liquid (EMIM: TFSI, IL) via a simple wet-spinning process. An appropriate amount of IL significantly induces PEDOT chain stretching and orientation, effectively shielding the PSS insulating regions, while preserving the long-lasting conductive network formed by single-walled carbon nanotubes (SWCNT) and the mechanical structure of the fibers. Experimental results demonstrated that the optimized PEDOT: PSS/SWCNT/IL-30 composite fiber achieved a synergistic improvement of record-high volumetric capacitance (633 F cm −3 at a current density of 3 A cm −3 ) and outstanding mechanical strength (247 ± 18.5 MPa). The fiber supercapacitor assembled from this composite fiber exhibited an ultrahigh volumetric energy density of 41.1 mWh cm −3 at a power density of 239.2 mW cm −3 . It retained 78.6% of its capacitance after 10,000 cycles at 7 A cm −3 , revealing excellent rate capability and cycling stability. Furthermore, the fibers woven into flexible fabric devices could power an electronic watch for nearly 50 min, demonstrating superior practical power-supply capability. By clearly elucidating the concentration–structure–property relationship, this study provides key insights and experimental evidence for the design of high-performance, weavable energy storage electrodes, which is of great significance for advancing the practical application of flexible wearable energy storage systems. This paper proposes a structural design strategy for synergistically constructing a dual-continuous “ion-electron” transport network. The fabricated PEDOT:PSS/SWCNT/IL-30 composite fiber achieves an ultra-high specific capacitance of 633 F cm −3 . The assembled symmetric fiber supercapacitor delivers a power density of 239.2 mW cm −3 at an energy density of 41.1 mWh cm −3 . Download: Download high-res image (147KB) Download: Download full-size image
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DOI
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
·
2023
·
IF 4.6
Xinhua Liu,Chengkun Ma,Shaowei Lu,Rongzheng Xu,Keming Ma,Xingmin Liu,Lu Zhang
In this paper, the health monitoring of Al 7075 friction stir welded structure was carried out, including elastic and plastic deformation during stretching and bending. A thin film sensor composed of MXene and single-walled carbon nanotubes was developed by simple mixing and vacuum filtration. This flexible MXene/SWCNT thin film sensor combining the sensitivity of MXene with the stability of carbon nanotubes and can be pasted on the surface of Al 7075 FSW joints through polyimide encapsulation to achieve structural health monitoring . The experimental results show that the MXene/SWCNT sensors encapsulated in polyimide can effectively capture the micro strain of different areas during stretching and bending. When the strain of the welded structure is less than 3000, only elastic deformation occurs in different regions of the welded structure, and the sensors located in different regions show the same resistance change rate. When the strain is greater than 3000, the resistance change rate of the sensors in the thermal-mechanical affected zone and heat affected zone obviously, and when the external force is released, there is residual resistance , which proves that the plastic deformation occurs in the welded structure at this time. By comparing the resistance change rate of the sensors in different regions, it can be inferred whether plastic deformation occurs. As the strain further increases, the resistance change rate of the sensor further increases and make a stable response until the structure breaks. This sensor can be used to track the whole process monitoring of welded structure before fracture.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Fuzhen Li,Ying Xu,Ling Chen,Jinghao Xie,Li Jiang,Zhongxin Liang,Guojing Zang,Zishou Zhang
Silicon anode undergoes dramatic volume expansion during charge and discharge, causing structural and interfacial instability that severely degrades battery cycling performance. Herein, we propose a three-dimensional (3D) flexible self-standing SiMP/SWCNT-COOH@PVA/PAA anode, in which carboxylation-modified single-walled carbon nanotubes (SWCNT-COOH) construct a highly conductive and flexible skeleton to provide rapid electron transport channels for micron silicon (SiMP), while polyacrylic acid-polyvinyl alcohol (PVA-PAA) cross-linking layer forms a high-strength polymer interface to strengthen the conductive skeleton and helps to maintain the structural integrity of SiMP. The resulting electrode exhibits ultra-high electrical conductance (12406 S m −1 ) and exceptional mechanical characteristic (tensile strength of 46.95 MPa). More importantly, it demonstrates extremely stable electrochemical properties, with an impressive maximum capacity of approximately 2868.5 mAh g −1 at 0.2C, while retaining an exceptional 96.49 % of capacity even after 100 cycles. A consistent capacity of 1000 mAh g −1 at 1C throughout 1000 cycles is also realized. Furthermore, a flexible full battery based on SiMP/SWCNT-COOH@PVA/PAA anode achieves a discharge capacity of 49.5 mAh g −1 following 100 cycles, and illuminates a LED strip normally under various bending conditions. These results are expected to open a new way towards enhanced performance silicon-based electrodes within flexible LIBs.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Li Liu,Li Wang,Qisheng Liang,Tao Guo,Feng Guo
Copper oxide-single walled carbon nanotube (CuO-SWCNT) hybrid nanostructure and poly-(diallyldimethylammonium chloride) (PDDA) modified glassy carbon electrode (GCE) for sensitive enzyme-free H 2 O 2 detection has been fabricated via electrostatic interaction strategies. Characterization by XRD, IR and SEM showing that CuO was coated on SWCNT molecular wires, and positively charged PDDA attached to the negatively charged SWCNT, thus CuO-SWCNT-PDDA was constructed. The reduction peak current of H 2 O 2 was significantly increased due to the catalytic property of CuO, which was further enhanced by the synergic effect of SWCNT due to its improvement of electron transfer rate. The calibration curve was linear in the range of 1–1150 µM with a detection limit of 0.39 µM. The electrode coupled with amperometric measurement was successfully applied in H 2 O 2 residue determination in milk and the soaking solutions of chicken paw samples. The results have no remarkable difference compared with the reference UV–Vis method.
研究领域:
食品科学
·
分析化学
·
纳米材料
✓ 已验证
产品关联
DOI
高影响因子
CHINESE CHEMICAL LETTERS
·
2013
·
IF 1.21
Long Zhang,Yang-Ping Wen,Yuan-Yuan Yao,Zi-Fei Wang,Xue-Min Duan,Jing-Kun Xu
A simple, sensitive, and reliable method for the voltammetric determination of bisphenol A (BPA) by using carboxylic group functionalized single-walled carbon nanotubes ( f -SWCNT)/carboxylic-functionalized poly(3,4-ethylenedioxythiophene) (PC4) complex modified glassy carbon electrode (GCE) has been successfully developed. The electrochemical behavior of BPA at the surface of the modified electrode is investigated by electrochemical techniques. The cyclic voltammetry results show that the as-prepared electrode exhibits strong catalytic activity toward the oxidation of BPA with a well-defined anodic peak at 0.623 V in PBS (0.1 mol/L, pH 7.0). The surface morphology of the 3D network of composite film is beneficial for the adsorption of analytes. Under the optimized conditions, the oxidation peak current is proportional to BPA concentration in the range between 0.099 and 5.794 μmol/L ( R 2 = 0.9989), with a limit of detection of 0.032 μmol/L ( S / N = 3). The enhanced performance of the sensor can be attributed to the excellent electrocatalytic property of f -SWCNT and the extraordinary conductivity of PC4. Furthermore, the proposed modified electrode displays high stability and good reproducibility. The good result on the voltammetric determination of BPA also indicates that the as-fabricated modified electrode will be a good candidate for the electrochemical determination and analysis of BPA.
研究领域:
分析化学
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Xianwei Geng,Ruowei Yi,Xiangfei Lin,Chenguang Liu,Yi Sun,Yingchao Zhao,Yinqing Li,Ivona Mitrovic,Rui Liu,Li Yang,Cezhou Zhao
Lithium-sulfur (Li–S) batteries have attracted more and more attention in recent years, as their theoretical capacity is several times larger than conventional lithium-ion batteries and they have a high energy density in secondary battery systems. In our work, a titanium carbide - titanium dioxide/single-walled carbon nanotube/sulfur (TiC–TiO 2 /SWCNT/S) cathode with high conductivity and effective polysulfides adsorption is prepared by a facile method for fabricating Li–S batteries. The batteries with this composite cathode show a good performance at 0.1 C due to relatively high utilization of sulfur, reaching 1338.6 mAh·g −1 specific capacity at first cycle and retaining 802.5 mAh·g −1 after 100 cycles. Meanwhile, it presents an excellent rate performance with 711.2 mAh·g −1 at 4 C, and recovers to 1006.9 mAh·g −1 when the current returns to 0.1 C. Also a slow capacity decay (0.045% decay rate per cycle) is observed at 1 C. These results suggest that a small amount of SWCNT can increase the conductivity of the whole composite to a great extent, and the strong adsorption ability of TiO 2 increases the cycle life. This work offers an efficient and low-cost strategy to obtain high performance batteries with great potential for commercial applications.
研究领域:
材料科学
·
能源存储技术
✓ 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）