Preparation of Flexible N-Doped Carbon Nanotube/MXene/PAN Nanocomposite Films with Improved Electrochemical Properties

Li, Dandan; Yuan, Qi; Huang, Lingzhi; Zhang, Wei; Guo, Wenyan; Ma, Ming‐Guo

doi:10.1021/acs.iecr.1c03182

Cited by 29 publications

(15 citation statements)

References 77 publications

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Section: Mxene-cnt Compositesmentioning

confidence: 99%

“…Li et al [ 118 ] introduced N-doped CNT/MXene (Ti 3 C 2 T x )/polyacrylonitrile nanocomposite films as electrodes of supercapacitors, which were fabricated through vacuum filtration and electrospinning processes. These film electrodes with a high area-specific capacitance of 669.27 mF cm −2 and a high mass-specific capacitance of 446.18 F g −1 at 5 mV s −1 displayed suitable cycling stability with the retention of 90.9% after 4000 cycles, showing small capacity loss and good flexibility [ 118 ]. Despite the fascinating advantages of MXenes, such as significant volumetric capacitance, electrical conductivity, and hydrophilic properties, MXene-based electrodes may suffer from poor rate potential due to sheet restacking, particularly when the loading level is excessive and solid-state gels are employed as electrolytes [ 119 ].…”

Section: Mxene-cnt Compositesmentioning

confidence: 99%

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MXene-Carbon Nanotube Composites: Properties and Applications

et al. 2023

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Today, MXenes and their composites have shown attractive capabilities in numerous fields of electronics, co-catalysis/photocatalysis, sensing/imaging, batteries/supercapacitors, electromagnetic interference (EMI) shielding, tissue engineering/regenerative medicine, drug delivery, cancer theranostics, and soft robotics. In this aspect, MXene-carbon nanotube (CNT) composites have been widely constructed with improved environmental stability, excellent electrical conductivity, and robust mechanical properties, providing great opportunities for designing modern and intelligent systems with diagnostic/therapeutic, electronic, and environmental applications. MXenes with unique architectures, large specific surface areas, ease of functionalization, and high electrical conductivity have been employed for hybridization with CNTs with superb heat conductivity, electrical conductivity, and fascinating mechanical features. However, most of the studies have centered around their electronic, EMI shielding, catalytic, and sensing applications; thus, the need for research on biomedical and diagnostic/therapeutic applications of these materials ought to be given more attention. The photothermal conversion efficiency, selectivity/sensitivity, environmental stability/recyclability, biocompatibility/toxicity, long-term biosafety, stimuli-responsiveness features, and clinical translation studies are among the most crucial research aspects that still need to be comprehensively investigated. Although limited explorations have focused on MXene-CNT composites, future studies should be planned on the optimization of reaction/synthesis conditions, surface functionalization, and toxicological evaluations. Herein, most recent advancements pertaining to the applications of MXene-CNT composites in sensing, catalysis, supercapacitors/batteries, EMI shielding, water treatment/pollutants removal are highlighted, focusing on current trends, challenges, and future outlooks.

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Section: Mxene-cnt Compositesmentioning

confidence: 99%

Section: Mxene-cnt Compositesmentioning

confidence: 99%

MXene-Carbon Nanotube Composites: Properties and Applications

et al. 2023

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“…This electronic device can convert pressure into electrical signals when stimulated by external pressure, thereby enabling low‐power devices to be powered. Therefore, piezoelectric sensors based on nanofibers have received extensive attention due to their good flexibility, high conversion efficiency, easy processing, and low price to meet people's needs under different conditions 1–8 …”

Section: Introductionmentioning

confidence: 99%

Enhanced the dielectric and piezoelectric properties of polyacrylonitrile piezoelectric composite fibers filled with ionic liquids

Shi

et al. 2023

J of Applied Polymer Sci

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Here, we demonstrate the design and application of a multifunctional piezoelectric composite nanofiber membrane. In this study, the most widely used electrospinning method, by adding a small amount of 1-allyl-3-butylimidazolium tetrafluoroborate ionic liquids and ferric chloride hexahydrate (FeCl 3 Á6H 2 O) to regulate the structure and properties of polyacrylonitrile (PAN), the mechanical properties, piezoelectric properties, dielectric properties, and ferroelectric properties of composite nanofibers were improved. The results show that the piezoelectric properties of PAN composite fibers are greatly improved under the action of dual fillers. At 10 3 Hz, the dielectric constant of the PAN composite fiber is as high as 8.24, which is three times that of the pure PAN fiber. The sensor made from the composite nanofibers exhibits excellent sensitivity and high saturation polarization. At low pressure (<1 kPa), the sensitivity of the composite fiber is as high as 0.51 kPa. When we tap the sensor with our finger, the PAN composite fiber produces high piezoelectric output (5.7 V). The results show that the composite nanofibers have great potential in energy storage devices and flexible piezoelectric sensors, among other fields.

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“…In the literature, our group reviewed multifunctional ligninbased composite materials and nano-lignin materials for emerging applications (Deng et al, 2021;Ma et al, 2021a). Moreover, we prepared the flexible N-doped carbon nanotubes/MXene/PAN nanocomposite films with improved electrochemical properties via the electrostatic spinning method (Li et al, 2021). In this paper, the method of preparing PPy-coated lignin carbon fiber composite films by electrostatic spinning, in situ chemical polymerization, and carbonization was proposed.…”

Section: Introductionmentioning

confidence: 99%

“…In the literature, our group reviewed multifunctional lignin-based composite materials and nano-lignin materials for emerging applications ( Deng et al, 2021 ; Ma et al, 2021a ). Moreover, we prepared the flexible N-doped carbon nanotubes/MXene/PAN nanocomposite films with improved electrochemical properties via the electrostatic spinning method ( Li et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Lignin-Based/Polypyrrole Carbon Nanofiber Electrode With Enhanced Electrochemical Properties by Electrospun Method

Kim

et al. 2022

Front. Chem.

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Tailoring the structure and properties of lignin is an important step toward electrochemical applications. In this study, lignin/polypyrrole (PPy) composite electrode films with microporous and mesoporous structures were designed effectively by electrostatic spinning, carbonization, and in situ polymerization methods. The lignin can not only reduce the cost of carbon fiber but also increase the specific surface area of composite films due to the removal of carbonyl and phenolic functional groups of lignin during carbonization. Besides, the compact three-dimensional (3D) conductive network structures were constructed with PPy particles densely coated on the lignin nanofibers, which was helpful to improve the conductivity and fast electron transfer during the charging and discharging processes. The synthesized lignin carbon fibers/PPy anode materials had good electrochemical performance in 1 M H2SO4 electrolyte. The results showed that, at a current density of 1 A g−1, the lignin carbon nanofibers/PPy (LCNFs/PPy) had a larger specific capacitance of 213.7 F g−1 than carbon nanofibers (CNFs), lignin carbon nanofibers (LCNFs), and lignin/PPy fiber (LPAN/PPy). In addition, the specific surface area of LCNFs/PPy reached 872.60 m2 g−1 and the average pore size decreased to 2.50 nm after being coated by PPy. Therefore, the independent non-binder and self-supporting conductive film is expected to be a promising electrode material for supercapacitors with high performance.

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Preparation of Flexible N-Doped Carbon Nanotube/MXene/PAN Nanocomposite Films with Improved Electrochemical Properties

Cited by 29 publications

References 77 publications

MXene-Carbon Nanotube Composites: Properties and Applications

MXene-Carbon Nanotube Composites: Properties and Applications

Enhanced the dielectric and piezoelectric properties of polyacrylonitrile piezoelectric composite fibers filled with ionic liquids

Lignin-Based/Polypyrrole Carbon Nanofiber Electrode With Enhanced Electrochemical Properties by Electrospun Method

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