Preparation of Nanostructural Carbon Nanofibers and Their Electrochemical Performance for Supercapacitors

Lai, Ching Chang; Lo, Chieh Tsung

doi:10.1016/j.electacta.2015.02.143

Cited by 74 publications

(33 citation statements)

References 43 publications

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“…CNFs are recognized by their remarkable properties including excellent electrical and thermal conductivities, high chemical and mechanical stability, good specific surface area and a possibility of mass production. These properties make CNFs a very promising nanomaterial in various application area [31][32][33][34]. However, few studies have reported their application in electrochemical sensors.…”

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confidence: 99%

Electrochemical determination of traces lead ions using a new nanocomposite of polypyrrole/carbon nanofibers

Oularbi

Turmine

Rhazi³

2017

J Solid State Electrochem

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In this paper, a new nanocomposite of polypyrrole (PPy) and carbon nanofibers (CNFs) modified carbon paste electrode (CPE) has been reported for the determination of traces lead ions (Pb 2+ ). The obtained nanocomposite was fabricated by combining the unique advantages of PPy and CNFs using a very simple approach, which consists on modifying the CPE by the functionalized CNFs and then by the PPy film using galvanostatic mode. Several techniques were used to investigate the functionalized CNFs and the PPy/CNFs nanocomposite including Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) for surface layers of CNFs, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) for the electrical proprieties of the PPy/CNFs nanocomposite. The surface morphologies were examined by field emission gun scanning electron microscopy (FEG-SEM). The square wave anodic striping voltammetry (SWASV) was used to investigate the analytical performances of the designed electrode PPy/CNFs/CPE. Different parameters that affect the stripping analysis of Pb 2+ including supporting electrolyte, deposition potential, and deposition time were investigated. Under the optimum experimental conditions, a good linearity between the stripping peak currents and the concentration of Pb 2+ was obtained in the range of concentration from 0.2 to 130 µg L -1 Pb 2+ . The detection limit was estimated to be 0.05 µg L -1 Pb 2+ . Finally, the proposed method has been successfully applied for the determination of Pb 2+ in real samples of tap water with satisfactory results.

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confidence: 99%

Electrochemical determination of traces lead ions using a new nanocomposite of polypyrrole/carbon nanofibers

Oularbi

Turmine

Rhazi³

2017

J Solid State Electrochem

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“…PVdF has lower surface tension (36 dyne · cm −1 ) than PVP (42 dyne · cm −1 ). 13 Most PVP was encapsulated by PVdF when PVP content was low, and the pore size and quantity of the pores obtained were small after removal of PVP using water treatment under ultrafineassisted vibrating condition (Figures 1c and 1d). However, less PVP was encapsulated by PVdF as the content of PVP was increased in PVP/PVdF electrospun fibers, and therefore the size and quantity of pores were increased after PVP from PVP/PVdF blend electrospun fibers (Figure 1e).…”

Section: Resultsmentioning

confidence: 99%

“…After allowing the solvent to evaporate slowly in air, the samples were dried under vacuum for 12 h to remove all traces of the solvent before observation by optical microscopy. 13 The morphologies of electrospun fibers membranes were observed by field emission scanning electron microscopy (SEM, Hitachi S-4800). The founctional groups of polymer fibers were analyzed by Fourier transform infrared (FTIR) spectrometer (Varian 640) from 4000 cm −1 -400 cm…”

Section: E380mentioning

confidence: 99%

Preparation and Electrochemical Performance of PVdF Ultrafine Porous Fiber Separator-Cum-Electrolyte for Supercapacitor

Jia

Lang

et al. 2017

J. Electrochem. Soc.

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Poly (vinylidene fluoride) (PVdF) ultrafine porous fiber membranes with a three-dimensional network structure, high porosity and electrolyte uptake are prepared via a blend electrospinning and phase separation process under ultrasonic-assisted vibration. The structure and morphology of PVdF fiber membranes are investigated by the scanning electron microscope and porous structure parameter analyzer. The electrochemical performances of supercapacitor constructed with PVdF ultrafine porous fiber membrane as separator-cum-electrolyte are investigated. PVdF ultrafine porous fiber membranes possess high electrolyte uptake (360 wt%) and wide electrochemical stability windows (0.0 to 3.3 V). The activated electrode supercapacitor constructed by PVdF ultrafine porous fiber separator-cum-electrolyte exhibits superior specific capacity (39.5 F·g−1) even under high current density (100 mA·g−1).

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“…Materials, containing various nanosized carbon structures, such as nanofibers, nanotubes, nanowires, bamboos etc., currently attract a lot of research and practical interest. They may be used for creation of advanced supercapacitors [6][7] and devices for thermal and photovoltaic conversion of solar energy [8][9][10][11], manufacturing of thermally and electrically conductive polymers and composites, electromagnetic absorbing shields [12][13][14] and many other novel and emerging materials. Such structures may be created, in particular, by means of pyrolysis of the hydrocarbon feedstock at the catalytically active surfaces, e.g.…”

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confidence: 99%

Glass fiber supports modified by layers of silica and carbon nanofibers

Popov¹,

Zazhigalov²,

Ларина³

et al. 2017

Catalysis for Sustainable Energy

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Abstract:The new multi-layered composite was manufactured by deposition of the carbon nanofibers (CNF) at the surface of the glass-fiber fabric, which is pre-modified by application of additional external layers of NiO and porous silica. Carbonization of synthesized catalytic template was performed at 450 °C in propanebutane media at ambient pressure. CNF was deposited in amount of ~130% of initial template mass or 65 g per g of nickel, the specific surface area of the material is ~100 m 2 /g. The synthesized material has high mechanical strength, high hydrophobicity and strong bonding between CNF and glass-fiber support. The synthesis method is technologically simple, inexpensive and easily scalable. It is possible to manufacture such material in various solid shapes, using the flexibility of the primary glass-fiber support; in particular, it may be used for production of the mechanically self-sustainable catalytic cartridges with required shape and internal geometry using no additional structuring elements.

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Preparation of Nanostructural Carbon Nanofibers and Their Electrochemical Performance for Supercapacitors

Cited by 74 publications

References 43 publications

Electrochemical determination of traces lead ions using a new nanocomposite of polypyrrole/carbon nanofibers

Electrochemical determination of traces lead ions using a new nanocomposite of polypyrrole/carbon nanofibers

Preparation and Electrochemical Performance of PVdF Ultrafine Porous Fiber Separator-Cum-Electrolyte for Supercapacitor

Glass fiber supports modified by layers of silica and carbon nanofibers

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