Morphological Study of Hybrid Nanofibers Based on Polyaniline/Carbon Nanofibers Prepared by Electrospinning Method

2016 ◽  
Vol 3 (2) ◽  
pp. 10-16
Author(s):  
Masoume Hezarjaribi ◽  
◽  
Mohsen Jahanshahi ◽  
Ahmad Rahimpour ◽  
Maryam Yaldagard ◽  
...  
Keyword(s):  
Carbon Nanofibers ◽  
Morphological Study ◽  
Hybrid Nanofibers ◽  
Electrospinning Method

scholarly journals Preparation of activated carbon nanofibers using degradative solvent extraction products obtained from low-rank coal and their utilization in supercapacitors

RSC Advances ◽  
2020 ◽  
Vol 10 (14) ◽  
pp. 8172-8180 ◽  
Author(s):  
Weixiang Qian ◽  
Xian Li ◽  
Xianqing Zhu ◽  
Zhenzhong Hu ◽  
Xu Zhang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Solvent Extraction ◽  
Carbon Nanofibers ◽  
Low Rank ◽  
Low Rank Coal ◽  
Activated Carbon Nanofibers ◽  
Electrospinning Method

Activated carbon nanofibers for supercapacitor electrodes were prepared by the electrospinning method using degradative solvent extracts from low-rank coal and PAN.

ELECTROSPINNING OF CONTINUOUS CARBON NAONOFIBER-FILLED COMPOSITE FIBERS

2012 ◽  
Vol 05 ◽  
pp. 545-550
Author(s):  
Seyed Hamed Aboutalebi ◽  
Zahra Gholamvand ◽  
Mansoor Keyanpour-Rad
Keyword(s):  
Carbon Nanofibers ◽  
Polymer Fibers ◽  
Composite Fibers ◽  
Force Microscopy ◽  
Atomic Force ◽  
Macro Scale ◽  
Electrospinning Method ◽  
Scale Structures ◽  
Filled Composite ◽  
Pan Fibers

In order to translate the superior properties of carbon nanofibers (CNFs) to macro-scale structures, an electrospinning route capable of placing CNFs into a continuous nano-scale composite fibril is introduced. In this work, composite fibers were produced by electrospinning solution of polyacrylonitrile ( PAN ) with carbon nanofibers dispersed in dimethylformamide ( DMF ), which is an effective solvent for carbon nanofibers. Atomic force microscopy (AFM) and scanning electron microscopy (SEM) demonstrated rough and globular surfaces on the CNF containing fibers. Raman spectra confirmed the presence of CNFs in the polymer fibers prepared employing the electrospinning method. Raman observation served as the direct evidence of successful filling of PAN fibers with CNFs and complemented the results obtained by SEM and AFM studies.

High-performance red phosphorus/carbon nanofibers/graphene free-standing paper anode for sodium ion batteries

2018 ◽  
Vol 6 (4) ◽  
pp. 1574-1581 ◽  
Author(s):  
Xiaoxin Ma ◽  
Long Chen ◽  
Xiaohua Ren ◽  
Guangmei Hou ◽  
Lina Chen ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Carbon Nanofibers ◽  
High Performance ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Red Phosphorus ◽  
Free Standing ◽  
Graphene Electrode ◽  
Excellent Electrochemical Performance ◽  
Electrospinning Method

A novel flexible P/carbon nanofibers@graphene electrode, which exhibits an excellent electrochemical performance, is fabricated via a vapor-redistribution and electrospinning method.

Preparation and Characterization of Electrospun Carbon Nanofibers with Na2CO3/H3PO4 Activation

2008 ◽  
Vol 135 ◽  
pp. 81-84 ◽  
Author(s):  
Ji Sun Im ◽  
Soo Jin Park ◽  
Young Seak Lee
Keyword(s):  
Phosphoric Acid ◽  
Specific Surface ◽  
Surface Area ◽  
Carbon Nanofibers ◽  
Pore Volume ◽  
Total Pore Volume ◽  
Chemical Agent ◽  
Electrospinning Method ◽  
Increase Surface Area

In this work, carbon nanofibers(CNFs) were prepared by using electrospinning method. Phosphoric acid and sodium carbonate activation of CNFs were conducted to increase surface area and pore volume. Pore structures of activated CNFs were developed with increasing surface area and pore volume through activation. Specific surface area increased about 60 times and total pore volume developed around 120 times. Activated CNFs have different pore distribution with different chemical agent.

Electrospun Tin Oxide Nanofibers with Different Precursor Solution

2011 ◽  
Vol 675-677 ◽  
pp. 275-278
Author(s):  
Xue Bai ◽  
Di Jia ◽  
Bo Wen Cheng ◽  
Wei Min Kang ◽  
Quan Xiang Li
Keyword(s):  
Crystal Structure ◽  
Tin Oxide ◽  
Precursor Solution ◽  
Average Diameter ◽  
Surface Element ◽  
Rutile Structure ◽  
Inorganic Hybrid ◽  
Hybrid Nanofibers ◽  
Electrospinning Method ◽  
Crystalline Forms

In this paper, electrospinning method was adopted to prepare tin oxide nanofibers membrane with three kinds of novel precursor solution PVP/C12H24O4Sn, PVP/ C4H10OSn and PVP/SnCl4. The morphology, surface element, thermal analysis and crystal structure of the fibers membrane were investigated by SEM, EDS, TG-DTA and XRD. The results showed that the organic/inorganic hybrid nanofibers with an average diameter of 300～700 nm can be obtained by electrospinning. But after calcined at 600°C, the loose and porous tin oxide nanofibers membrane with an average diameter of 100～250 nm can be obtained only by using PVP/SnCl4 as preceusor solution, moreover, it showed good fiber forming property. From XRD spectra, it was found that the rutile structure tin oxide finally obtained without other crystalline forms.

Study of the performance of SnxSbySz/carbon nanofibers composite as anode of sodium-ion batteries

MRS Advances ◽  
2020 ◽  
Vol 5 (57-58) ◽  
pp. 2917-2927
Author(s):  
L.A. Rodríguez-Guadarrama ◽  
J. Escorcia-García ◽  
E. Quiroga-González ◽  
I.L. Alonso-Lemus
Keyword(s):  
Carbon Nanofibers ◽  
Low Cost ◽  
Nitrogen Atmosphere ◽  
Sodium Ion ◽  
The Other ◽  
Sodium Ion Batteries ◽  
Thin Coating ◽  
Deposition Technique ◽  
Promising Alternative ◽  
Electrospinning Method

Sodium-ion batteries (SIBs) have emerged as a promising alternative for energy storage. In this work, it has been synthesized a nanocomposite material of SbxSbySz/Carbon nanofibers (CNFs) using low-cost synthesizing methods. First, CNFs have been obtained by electrospinning method with subsequent carbonation at 700°C. Afterward, a SbxSbySz thin coating is deposited on the CNFs by chemical bath deposition technique to obtain the SbxSbySz/CNFs. In order to obtain the SnSb2S4 crystalline phase, the composite is heated at 300°C in nitrogen atmosphere. The evaluation of this nanocomposite as the anode for SIBs has a reversible discharge capacity of 180 mAh g-1 and a columbic efficiency of 61.4% after 9 cycles. On the other hand, the resistance associated to the charge transfer to the CNFs decreases from 115.03 Ω to 77.86 Ω due to the incorporation of SnxSbySz. Finally, an easy and inexpensive route has been proposed for the synthesis of SbxSbySz/CNFs composite with great potential to be used as anode material for SIBs.

Nanocavity-engineered Si/multi-functional carbon nanofiber composite anodes with exceptional high-rate capacities

2014 ◽  
Vol 2 (42) ◽  
pp. 17944-17951 ◽  
Author(s):  
Zheng-Long Xu ◽  
Biao Zhang ◽  
Sara Abouali ◽  
Mohammad Akbari Garakani ◽  
Jiaqiang Huang ◽  
...  
Keyword(s):  
Carbon Nanofibers ◽  
Carbon Nanofiber ◽  
High Rate ◽  
Nanofiber Composite ◽  
Electrospinning Method ◽  
Li Ion ◽  
Composite Anodes

Multi-functionalized carbon nanofibers containing nanocavity-engineered Si particles as durable high-rate Li-ion anodes were fabricated via a facile electrospinning method.

scholarly journals Next Generation Hybrid Nanofiber Based Electrochromic Devices

2018 ◽  
Vol 1 (1) ◽  
pp. 884-893
Author(s):  
Cigdem Dulgerbaki ◽  
Aliihsan Komur ◽  
Aysegul Uygun Oksuz
Keyword(s):  
Optical Modulation ◽  
Electrochromic Device ◽  
Electrochromic Devices ◽  
Entire Surface ◽  
Long Term Stability ◽  
Hybrid Nanofibers ◽  
Electrospinning Method ◽  
Hybrid Nanofiber ◽  
Generation Hybrid

This study focuses on the electrochromic device (ECD) applications of poly(3,4-ethylenedioxythiophene)/tungsten oxide (PEDOT/WO3) hybrid nanofibers prepared via electrospinning method. Nanoporous WO3 films were initially electrosynthesized on Pt sheet. The PEDOT layer was electropolymerized onto the entire surface of the WO3 nanoporous host framework in the presence of different ionic liquids: 1-butyl-3-methylimidazolium tetrafluoroborate (BMIMBF4), 1-butyl-3-methylimidazolium hexafluorophosphate (BMIMPF6), 1-butyl- 3-methylimidazolium bis(trifluoromethylsulfonyl) imide (BMIMTFSI), and 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl) imide (BMPTFSI). ECDs changed color reversibly from transparent to light brown by switching from +3 V to -3 V. It was found that the highest optical modulation of 47.89% and maximum coloration efficiency of 363.72 cm2/C is achieved for PEDOT/WO3/BMIMPF6 based electrochromic device. Hybrid nanofibers exhibited excellent long term stability even after 1000 chronoamperometric cycles.

scholarly journals SYNTHESIS OF CARBON NANOFIBERS BASED ON HUMIC ACID AND POLYACRYONITRILE BY ELECTROSPINNING METHOD

2021 ◽  
Vol 447 (3) ◽  
pp. 103-110
Author(s):  
B.T. Yermagambet ◽  
M.K. Kazankapova ◽  
A.T. Nauryzbayeva ◽  
Zh.M. Kassenova
Keyword(s):  
Electron Microscopy ◽  
Humic Acid ◽  
Elemental Composition ◽  
Carbon Nanofibers ◽  
Carbon Fibers ◽  
X Ray ◽  
Electrospinning Method ◽  
Original Product ◽  
Degree Of Graphitization ◽  
Scanning Electron

The article describes a method for obtaining carbon nanofibers (CNFs) based on humic acid from oxidized coal of the Maikuben basin and polycarlonitrile (PAN) by electrospinning in laboratory conditions. The value of the interelectrode voltage was 20-25 kV. The elemental composition was determined and the surface morphology of the studied sample was studied, the type of modification of the carbon fiber was revealed. As a result of energy dispersive X-ray spectroscopy and scanning electron microscopy (SEM), the chemical composition of the initial CNF (C-48.73%) and the diameter of carbon fibers, which ranged from 148.6 nm to 1.36 μm, were found. The processes of oxidation and carbonization of the obtained samples were also carried out. The elemental composition of carbon after oxidation and carbonization was 87.75 and 89.16%, respectively, the diameter of the fibers was 117.5 nm -1.03 microns. The results of Raman scattering of light (RS) of carbonized CNF showed the degree of graphitization - 23.97%, the ratio I (D) / I (G) = 0.7, I (G) / I (D) = 1.4. The resistance of this material was 27 ohms. On the basis of SEM patterns of CNFs based on humic acid and PAN, it was found that the structure of the sample after oxidation and carbonization retains the original fibrous structure. It was also found that the diameter of nanofibers decreases from 1 μm to 117.5 nm, which may be associated with the release of volatile and heterogeneous components of the original product and the formation of a more structural thin porous filament.

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