Results in Chemistry
·
2026
·
IF 5.8
Yige Yan,Ming Fu,Jiaqi He,Dawei He,Yongsheng Wang
The practical application of aqueous supercapacitors is constrained by the balance between cycle life and power characteristics. This study develops a composite electrode based on hexagonal boron nitride/carbon nanotubes (h-BN/CNTs), featuring fabrication processes through thermal annealing and electrostatic assembly. The material ingeniously combines the chemical inertness and structural stability of h-BN with the conductive network of CNTs, successfully constructing an electrode with highly stable mechanical and electrochemical interfaces. The assembled symmetric supercapacitor demonstrates excellent long-term operational reliability, maintaining over 90% stability after 10,000 charge-discharge cycles while exhibiting outstanding rate performance. The core value of this work lies in its application to h-BN platforms for high-power, high-frequency optical devices, successfully transforming it into a high-performance electrochemical energy storage component. The material has a high power density of 600 W/kg and a fairly good energy density of 13.6 Wh/kg in the symmetric two-electrode test. This device construction strategy based on a unified core material system creates compatibility advantages for material substrate and process-level integration with high-power optical devices, providing a material foundation for developing next-generation optoelectronic integrated systems.
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高影响因子
ECS Journal of Solid State Science and Technology
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2019
·Vol. 8
·期 10
·N141
·
IF 1.795
Guangyue Shi,Yunpeng Qu,Guohua Fan,Yao Liu
The CNTs-CBs nano-units composed of carbon nanotubes (CNTs) and carbon black (CBs) have been prepared by electrostatic self-assembly. Herein, the CNTs-CBs/PS composites with different CNTs-CBs contents were prepared. The negative permittivity behavior was observed when three-dimensional conductive network was constructed by CNTs-CBs. Tunable and weakly negative permittivity originated from the low frequency plasmonic state which was collective electrons oscillation in CNTs-CBs network. The Jonscher's power law and Drude model were used to analyze the dielectric behavior and conductive mechanism changing. This work has broadened the applications of carbonaceous materials and polymers in the field of metamaterials.
研究领域:
材料科学
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电磁学
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高影响因子
MATERIALS & DESIGN
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2016
·
IF 3.997
Jianjun Sha,Jian Li,Shouhao Wang,Zhaofu Zhang,Yongchang Wang,Jixiang Dai
ZrC-based ceramic composites doped with 20 vol.% titanium (Ti) and 3 vol.% carbon nanotubes (CNTs) were prepared by hot pressing. The densification behavior, microstructural evolution and mechanical properties of the composites were studied. The results indicated that the sinterability of the composites was significantly improved, resulting in highly dense matrix (98.27%) at reduced sintering temperature (1600 °C). In addition to the main phase of (Zr, Ti)C, the composites also contained a certain amount of TiC, which was shown to be beneficial for the improvement of mechanical properties. As a result, the flexural strength of the composites was measured to be 415 MPa at room temperature and 647 MPa at 800 °C, respectively. Moreover, the composites showed a high fracture toughness of 5.27 MPa m 1/2 , which increased by 32% compared with the monolithic ZrC (4 MPa m 1/2 ). The improved fracture toughness was attributed to crack deflection, crack bridging and crack branching.
研究领域:
材料科学
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机械工程
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DOI
高影响因子
Scientific Reports
·
2016
·Vol. 6
·期 1
·1-7
·
IF 5.228
Li Delong,Gong Youning,Pan Chunxu
In this work, a novel carbon nanotubes (CNTs)/NiCo 2 S 4 composite for high performance supercapacitors was prepared via a simple chemical bath deposition combined with a post-anion exchange reaction. The morphologies and phase structures of the composites were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectroscopy (Raman), X-ray photoelectron spectroscopy (XPS) and low-temperature sorption of nitrogen (BET). The electro-chemical tests revealed that the CNT/NiCo 2 S 4 composite exhibited high electrochemical performance, because the CNTs were used as a conductive network for the NiCo 2 S 4 hexagonal nanoplates. Compared with pure NiCo 2 S 4 and the mechanically mixed CNTs/NiCo 2 S 4 composite, the CNTs/NiCo 2 S 4 composite electrode material exhibited excellent supercapacitive performance, such as a high specific capacitance up to 1537 F/g (discharge current density of 1 A/g) and an outstanding rate capability of 78.1% retention as the discharge current density increased to 100 A/g. It is therefore expected to be a promising alternative material in the area of energy storage.
研究领域:
材料科学
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能源存储技术
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
·
IF 16.744
Congwen Duan,Zhaohua Su,Yating Tian,Dong Fu,Yuling Zhang,Wei Lv,Jinghong Zhang,Lianxi Hu,Ying Wu
MgH 2 , as one of the most potential hydrogen storage materials, has received considerable attention. However, its development has been plagued by its slow hydriding kinetics. Mechanochemical milling is an effective and convenient method for producing MgH 2 @CNTs-Ni through a solid–gas reaction between Mg-CNTs-Ni and H 2 . However, the hydriding kinetics and the corresponding mechanism during the milling have not been mentioned. Thus, hydriding kinetics of Mg-CNTs-Ni was researched for the purpose of gaining insights into the reaction mechanism and obtaining the best milling parameters. Also, phase transition during the milling was analyzed using XRD and TEM . It is apparent that the Avrami-Erofeev (AE) model can well describe the mechanochemical process, which contains solid solution, phase transition and growth-controlled regime. Besides, kinetics of hydrogenation is limited by nucleation and growth of MgH 2 . By fitting with the Arrhenius equation, average apparent activation energy for the hydrogenation of Mg-CNTs-Ni is estimated to be 47.8 kJ mol −1 .
研究领域:
材料科学
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化学工程
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2023
·Vol. 34
·期 21
·1-16
·
IF 2.8
Chen Yuanming,Li Jiaqi,Hong Yan,He Wei,Tang Yao,Zhou Guoyun,Xu Zhenlin,He Yaozong,Nie Zhiguo,Zhang Jiaqiang,Wang Shouxu
Polydimethylsiloxane (PDMS) is widely used as an elastic substrate for flexible pressure sensors. Functional materials integrated into the network of PDMS are usually able to enhance sensing performance. In this work, carbon nanotubes (CNTs) mixed with nano-zinc oxide (nano-ZnO) were used as conductive filler to prepare nano-ZnO/CNTs/PDMS active layer to assemble a flexible pressure sensor. At 0 ~ 10 kPa, nano-ZnO/CNTs/PDMS pressure sensor exhibits a sensitivity of 0.18 kPa −1 and a response time of 45.5 ms. The results confirm that the combination of CNTs and nano-ZnO provides the PDMS substrate with improved pressure sensing properties. Moreover, the nano-ZnO/CNTs/PDMS sensor maintains a good stability after 6000 cycles. After assembly, the nano-ZnO/CNTs/PDMS sensor could be used to monitor the movement of various body parts.
研究领域:
材料科学
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传感器技术
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2025
·
IF 4.1
Cunpeng Duan,Jiahui Xiao,Yanzhi Sun,Junqing Pan
The development of high-performance acidic oxygen evolution reaction (OER) catalysts with ultralow overpotential is crucial for green electrolysis, particularly to address the competitive anodic oxidation between water molecules and Pb 2+ during lead recovery. In this work, we proposed IrCoP@CNT through an in-situ growth of ZIF-67 on carbon nanotubes (CNTs), controlled phosphidation, and precise deposition of iridium (Ir) species. The superior architecture integrates highly dispersed, nanoscale metallic Ir and crystalline IrP 2 active sites intimately anchored within a three-dimensional conductive network formed by CNTs intertwined with ZIF-derived N, P-codoped carbon, facilitating exceptional charge/mass transport, and enhances structural robustness. Remarkably, IrCoP@CNT achieves an ultralow OER overpotential of 113 mV (10 mA cm −2 ) in 1 M methanesulfonic acid (MSA) at 90 °C, while completely suppressing parasitic Pb 2+ oxidation to PbO 2 . This exceptional selectivity enables near-quantitative lead deposition (99.87 % current efficiency) with record-low energy consumption (420.68 kWh t −1 ), overcoming the OER/Pb 2+ oxidation competition. IrCoP@CNT establishes a new paradigm, uniquely merging ultra-high intrinsic OER kinetics with the fundamental elimination of competing anodic side reactions, dramatically minimizing energy dissipation and paving the way for highly efficient and sustainable electrochemical metal recycling.
研究领域:
电化学
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催化
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材料科学
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环境工程
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能源技术
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高影响因子
POLYMER
·
2024
·
IF 4.1
Jian Liu,Xiao Wang,Kai Han,Jing Liu,Jinfeng Yuan,Mingwang Pan,Zhicheng Pan
Conductive hydrogels have attracted significant attention as versatile materials for flexible sensors, with potential implementation in wearable technologies, electronic skins, and health diagnostics. However, traditional hydrogel models are frequently limited by their inadequate mechanical strength, poor conductivity, weak adhesion, and low durability, which pose significant barriers to their further application in flexible sensors. In this work, we prepared composite multifunctional hydrogels as flexible sensors, which were synthesized from sulfobetaine methacrylate SBMA) and acrylamide (AM), infused with dodecyl quaternary ammonium salt (Q12), and incorporated with poly(dopamine)-functionalized carbon nanotubes (PDA@CNTs). The PDA modification enhances the compatibility of CNTs with the hydrogel matrix. The incorporation of PDA@CNTs into the hydrogel matrix, along with the establishment of multiple dynamic bonds—such as ionic bonds, hydrogen bonds, cation-π interactions, and π-π stacking between polymer chains and PDA moieties—significantly enhances its tensile strength (53.79 kPa), toughness (134.77 kJ/m 3 ), adhesive capabilities (29.84 kPa to paper), and electrical conductivity (0.2 S/m). Moreover, the composite hydrogel reveals a remarkable mechanical strain response, coupled with impressive stability and durability over prolonged periods. It efficiently differentiates between mild elongations (10%–40 %) and substantial elongations (50%–300 %), thereby showcasing its capability for real-time biomechanical motion monitoring. Additionally, the composite hydrogel displays remarkable photothermal antibacterial efficacy upon exposure to near-infrared (NIR) radiation, along with outstanding biocompatibility under standard conditions, thereby confirming its suitability for safe and long-term biological interactions. The exceptional functionality of these composite hydrogels renders them highly conducive to diverse applications in the realm of wearable sensor technologies.
研究领域:
材料科学
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生物医学工程
·
传感技术
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DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2016
·
IF 2.75
Yu Chen,Rentao Mu,Mingde Yang,Lina Fang,Yulong Wu,Kejing Wu,Ya Liu,Jinlong Gong
This paper describes catalytic consequence of hydrothermal liquefaction (HTL) of Dunaliella tertiolecta ( D. tertiolecta ) over carbon nanotubes (CNTs) supported metals catalysts to produce bio-oil. When Co/CNTs is used as catalysts, the conversion and bio-oil yield increase to 95.78 and 40.25 wt.%, respectively. Chemical analysis results showed that the introduction of catalyst significantly affected the chemical composition of bio-oil with a higher percentage of hydrocarbons and a lower content of fatty acid. The introduction of metal into CNTs had no change in the basic CNT skeleton and the loaded metal nanoparticles encapsulated within the CNT enhances the disorder and defects in CNTs . Based on our results and the literature, the plausible general reaction and catalytic HTL pathways of D. tertiolecta are proposed.
研究领域:
生物化学
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能源生物学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2019
·
IF 4.175
Yanfei Li,Yuanyuan Fu,Wenbin Liu,Yonghai Song,Li Wang
A novel hollow Co-Co 3 O 4 coated with carbon nanotubes (CNTs) nanostructure was designed. Here, zeolite imidazolate framework-67 cubes were used as sacrificial template and carbonized under H 2 /Ar atmosphere along with in-situ growth of CNTs to form Co nanostructures@CNTs. Then the Co nanostructures@CNTs was treated by thermal-oxidation under air to further construct hollow Co-Co 3 O 4 @CNTs. The obtained hollow Co-Co 3 O 4 @CNTs was characterized by scanning electron microscopy, transmission electron microscopy , N 2 adsorption/desorption isotherms, X-ray powder diffraction, X-ray photoelectron spectroscopy and electrochemical techniques . It was found that the hollow Co-Co 3 O 4 @CNTs cubes were wrapped by lots of CNTs. As it was used as anode materials for lithium ion batteries (LIBs), after cycling 200 cycles at 0.2 A g −1 , the reversible capacity was still kept at 806.7 mA h g −1 . Excellent cycle stability and Li + storage capacity originated from the hollow nanostructures and the encapsulation of CNTs around hollow Co-Co 3 O 4 cubes to buffer the volume change of Co 3 O 4 and improve the electrical conductivity . Meanwhile, the increased specific surface area could effectively improve the storage of Li + . Therefore, the hollow Co-Co 3 O 4 @CNTs might have potential application in LIBs.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2018
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IF 2.955
Yuanyuan Zhang,Xuanhua Li,Jinmeng Zhu,Shuangjie Wang,Bingqing Wei
Acrylic resin Primal® AC 33 is a common consolidant for wall paintings in a large scale. However, some disadvantages are encountered, such as low glass transition temperature (T g ), unwanted hygroscopicity, and surface gloss when applying it on wall paintings. To address these issues, the hybrids of the gum arabic treated single-walled carbon nanotubes (SWCNTs) and the Primal® AC 33 were prepared with a different weight fraction of SWCNTs ranging from 0.005% to 0.05% via solution blending. The morphology, chemical, thermal, mechanical, and optical properties of the hybrids were systematically investigated by various characterization methods. The results show that the T g , the hardness, and the adhesion of the hybrid films are increased with the presence of SWCNTs, while the transparency and the gloss value of the films in the visible light range decrease simultaneously compared with the pristine AC 33 film. When the hybrid solutions were applied on simulating wall painting plaster samples, the evaluation data suggest that the hybrids with the SWCNT concentration not exceeding 0.025 wt% in AC 33 can be potentially used in the consolidation of the surface layer of wall paintings. The hybrids with a higher SWCNT concentration play a positive role in the consolidation of the ground layer of wall paintings. Our work opens a new insight for enhancing the properties of a consolidant for wall paintings by introducing SWCNTs.
研究领域:
文物保护
·
材料科学
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DOI
高影响因子
DALTON TRANSACTIONS
·
2022
·Vol. 51
·期 42
·16344-16353
·
IF 4.569
Nianxiang Hu,Jiang Liao,Xueliang Liu,Jinlong Wei,Li Wang,Min Li,Naixuan Zong,Ruidong Xu,Linjing Yang,Junli Wang
In addition to complex preparation and low-yield syntheses, attaining high energy density while maintaining high power density remains a significant challenge for supercapacitor applications in the field of energy storage. Herein, two-dimensional (2D) nickel-based metal–organic framework (NiMOF) nanosheets are grown around carbon nanotubes (CNTs) to form NiMOF/CNTs composite, which is synthesized via a one-step solvothermal method at various temperatures. Thereinto, the NiMOF/CNTs composite synthesized at 180 °C (NiMOF/CNTs 180) exhibits enhanced electrical conductivity for ion and electron transport due to the addition of the CNTs, as well as the highest specific capacitance due to the unique 3D vine-like structure, which provides abundant active sites for electrochemical reactions. Specifically, the NiMOF/CNTs 180 composite demonstrates outstanding electrochemical performance with high specific capacitance (1855.0 F g−1 at 1 A g−1) and an excellent capacitance retention of 87.7% at 10 A g−1, indicating a favorable rate performance. The NiMOF/CNTs 180//AC asymmetric supercapacitors (ASCs) device assembled with NiMOF/CNTs 180 and activated carbon (AC) has a high specific capacitance of 320.0 F g−1 at 1 A g−1 and a maximum energy density of 113.8 W h kg−1 at 800.0 W kg−1. Therefore, the present work provides a handy and efficient synthesis strategy for supercapacitor devices with high energy density.
研究领域:
材料科学
·
能源存储
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DOI
高影响因子
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