Polyaniline nanofiber decorated carbon nanofiber hybrid mat for flexible electrochemical supercapacitor

Anand, Surbhi; Ahmad, Wasi Uddin; Saidi, Abdullah Khamis Ali Al; Yang, Dae Hyun; Choudhury, Arup

doi:10.1016/j.matchemphys.2020.123480

Cited by 42 publications

(13 citation statements)

References 73 publications

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“…The R ct values of NPOS-CNF 11, NPOS-CNF 12, and NPOS-CNF 13 electrodes are 5.62, 3.91, and 8.76 Ω, respectively. The lowest R ct value of the NPOS-CNF 12 electrode indicates the higher ion-accessible surface area, greater electrical conductivity, and large mesoporosity for the easy and faster diffusion of electrolyte ions in the electrode. , On the other hand, for the NPOS-CN 13, a large number of oxygen functionalities block the transport/diffusion of electrolyte ions into the pores and its relatively lower surface area enhanced the charge-transfer resistance. Among the different doped CNF electrodes, the NPOS-CNF 12 shows the smallest Warburg slope of 3.18, implying better access of electrolyte ions to the electrode surface.…”

Section: Results and Discussionmentioning

confidence: 99%

N/P/O/S Heteroatom-Doped Porous Carbon Nanofiber Mats Derived from a Polyacrylonitrile/l-Cysteine/P₂O₅ Precursor for Flexible Electrochemical Supercapacitors

Ahmad

Anand

Dey

et al. 2021

ACS Appl. Energy Mater.

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It is still a great challenge to achieve high volumetric capacitance without losing gravimetric capacitance and cycling performances for carbon-based electrode materials to fulfill the demands for next-generation supercapacitors. In this work, we have fabricated carbon nanofiber (CNF) mats doped with tetraheteroatoms (N, P, O, and S) via a two-step process: electrospinning and carbonization. The surface porosity, mass density, and doping density of the as-prepared doped CNFs were optimized by varying the l-cysteine-to-potassium pentoxide mass ratio in the polyacrylonitrile (PAN) precursor solution. The structural evaluation of different heteroatom species in the carbon lattice of the as-prepared NPOS-CNFs was systematically studied by various spectroscopic techniques. The optimized NPOS-CNF 12 nanofibers, which were prepared from the PAN precursor containing an l-cysteine/P2O5 mass ratio of 1:2, have a high specific surface area (502.5 m2/g), high mesopore volume (1.561 cm3/g), high mass density (1.07 g/cm3), and highest content (10.34 atom %) of active heteroatom species such as pyrrolic N, pyridinic N, CO, C–S, and C3–PO species. Due to these unique features, the NPOS-CNF 12 exhibited an ultrahigh volumetric capacitance of 625.8 F/cm3 at a current density of 0.2 A/g and also exhibited high gravimetric capacitance (584.8 F/g) and good cycling stability (93.5% capacitance retention after 10 000 cycles) in a 6 M KOH electrolyte. As assembled, the NPOS-CNF 12//NPOS-CNF 12 supercapacitor in a 1 M Na2SO4 electrolyte delivered a high gravimetric energy density of 102.6 Wh/kg at a power density of 105 W/kg with a wide potential window of 0–1.8 V.

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Section: Results and Discussionmentioning

confidence: 99%

N/P/O/S Heteroatom-Doped Porous Carbon Nanofiber Mats Derived from a Polyacrylonitrile/l-Cysteine/P₂O₅ Precursor for Flexible Electrochemical Supercapacitors

Ahmad

Anand

Dey

et al. 2021

ACS Appl. Energy Mater.

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“…From this figure it is clear that the sample shows strong diffraction without any amorphous tails. Peaks at 2θ = ~18°, 19°, 23°, 25°, 26°, 30° reveals the ordered and crystalline nature of PANI-CNF composite [26][27][28][29][30]. Fig.…”

Section: X-ray Diffraction (Xrd) Analysismentioning

confidence: 99%

Enhancement of Electrical Conductivity of Polyaniline Synthesized by using Carbon Nanofiber

2021

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Carbon nanofiber (CNF) is a very useful additive for improving the performance of polymer matrix composites, but the performance has sometimes been interrupted by limits appear within composite processing. Recently, CNF based polymer composites are intensely considered as promising materials in many application fields, such as electrical devices, electrode materials for batteries, supercapacitors, sensors, etc. Among these, the electrical conductivity is always the first priority need to be considered. Polyaniline (PANI) and PANI-CNF composites are synthesized by chemical oxidative polymerization of aniline monomers in acidic media. The electrical conductivity of PANI-CNF composites were found varies with the degree of amount of CNF under the effect of multiple factors such as the concentration of aniline monomer, reaction media, oxidant, reaction temperature, reaction time, etc. The maximum electrical conductivity was found 3.7131 S/cm of the PANI-CNF composite coming from the polymerization of aniline with 0.05 g CNF. The results of the synthesis also demonstrated that CNF can be an effective material to prepare electrically conducting polymer composites with ordered nanostructures.

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“…However, those renewable clean forms of energy are severely restricted by environmental factors and energy supply is intermittent [ 7 ]. Therefore, it is urgent to develop effective and reliable devices for energy storage [ 8 , 9 ]. As a new type of storage device, supercapacitors have gained great attention in recent years thanks to their advantages of fast charge/discharge rate, high power density, and very long cycle life [ 10 , 11 , 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Transition Metal Oxide Electrode Materials for Supercapacitors: A Review of Recent Developments

et al. 2021

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In the past decades, the energy consumption of nonrenewable fossil fuels has been increasing, which severely threatens human life. Thus, it is very urgent to develop renewable and reliable energy storage devices with features of environmental harmlessness and low cost. High power density, excellent cycle stability, and a fast charge/discharge process make supercapacitors a promising energy device. However, the energy density of supercapacitors is still less than that of ordinary batteries. As is known to all, the electrochemical performance of supercapacitors is largely dependent on electrode materials. In this review, we firstly introduced six typical transition metal oxides (TMOs) for supercapacitor electrodes, including RuO2, Co3O4, MnO2, ZnO, XCo2O4 (X = Mn, Cu, Ni), and AMoO4 (A = Co, Mn, Ni, Zn). Secondly, the problems of these TMOs in practical application are presented and the corresponding feasible solutions are clarified. Then, we summarize the latest developments of the six TMOs for supercapacitor electrodes. Finally, we discuss the developing trend of supercapacitors and give some recommendations for the future of supercapacitors.

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Polyaniline nanofiber decorated carbon nanofiber hybrid mat for flexible electrochemical supercapacitor

Cited by 42 publications

References 73 publications

N/P/O/S Heteroatom-Doped Porous Carbon Nanofiber Mats Derived from a Polyacrylonitrile/l-Cysteine/P₂O₅ Precursor for Flexible Electrochemical Supercapacitors

N/P/O/S Heteroatom-Doped Porous Carbon Nanofiber Mats Derived from a Polyacrylonitrile/l-Cysteine/P₂O₅ Precursor for Flexible Electrochemical Supercapacitors

Enhancement of Electrical Conductivity of Polyaniline Synthesized by using Carbon Nanofiber

Transition Metal Oxide Electrode Materials for Supercapacitors: A Review of Recent Developments

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Polyaniline nanofiber decorated carbon nanofiber hybrid mat for flexible electrochemical supercapacitor

Cited by 42 publications

References 73 publications

N/P/O/S Heteroatom-Doped Porous Carbon Nanofiber Mats Derived from a Polyacrylonitrile/l-Cysteine/P2O5 Precursor for Flexible Electrochemical Supercapacitors

N/P/O/S Heteroatom-Doped Porous Carbon Nanofiber Mats Derived from a Polyacrylonitrile/l-Cysteine/P2O5 Precursor for Flexible Electrochemical Supercapacitors

Enhancement of Electrical Conductivity of Polyaniline Synthesized by using Carbon Nanofiber

Transition Metal Oxide Electrode Materials for Supercapacitors: A Review of Recent Developments

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Product

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N/P/O/S Heteroatom-Doped Porous Carbon Nanofiber Mats Derived from a Polyacrylonitrile/l-Cysteine/P₂O₅ Precursor for Flexible Electrochemical Supercapacitors

N/P/O/S Heteroatom-Doped Porous Carbon Nanofiber Mats Derived from a Polyacrylonitrile/l-Cysteine/P₂O₅ Precursor for Flexible Electrochemical Supercapacitors