Supercapacitor of TiO 2 nanofibers by electrospinning and KOH treatment

He, Xinyi; Yang, Changping; Zhang, G.L.; Shi, Dean; Huang, Qiu‐An; Xiao, Haibo; Liu, Y.; Xiong, Rui

doi:10.1016/j.matdes.2016.05.025

Cited by 73 publications

(19 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The R s value is ∼13 Ω, same for the both plots indicates no change is occurred in the solution resistance during the cycling process evidenced the structural stability of the electrode. Moreover, the height of the semicircle is very small signifies that the electrode has large capacity and this could be attributed to fibrous morphology of good conductive TNFs electrode, which not only provide high surface area but also facilitate fast charge transfer and electrolyte ion diffusion [61]. The slight change in the Warburg impedance after 5000 cycles implies that the diffusion control process is highly reversible and consistence with previous reports [61].…”

Section: Electrochemical Propertiessupporting

confidence: 73%

“…Moreover, the height of the semicircle is very small signifies that the electrode has large capacity and this could be attributed to fibrous morphology of good conductive TNFs electrode, which not only provide high surface area but also facilitate fast charge transfer and electrolyte ion diffusion [61]. The slight change in the Warburg impedance after 5000 cycles implies that the diffusion control process is highly reversible and consistence with previous reports [61]. The reliability of the supercapacitor electrode is mainly determined by cycle life test.…”

Section: Electrochemical Propertiesmentioning

confidence: 99%

See 1 more Smart Citation

Electrospun TiO₂ nanofiber electrodes for high performance supercapacitors

Narayana

Hussain

Reddy

2020

Mater. Res. Express

View full text Add to dashboard Cite

Nanofibers are one dimensional (1D) nanoarchitecture materials having high surface-to-volume ratio which provides improved ion diffusion and high mechanical strength to prevent volume expansion during electrochemical process and enhance the cycle stability. In the present study, TiO 2 nanofibers (TNFs) were successfully synthesized on an aluminum collector with a polymer concentration of 9 wt % by cost-effective electrospinning technique followed by annealing at a temperature 500°C. The XRD spectrum of electrospun TNFs exhibited predominant (101) orientation corresponding to anatase TiO 2 with I4 1 /amd symmetry. The estimated average crystallite size is 18 nm. The strongest Raman vibrational mode at 143 cm −1 confirms the phase purity of TNFs. The surface morphological feature depicts interconnected network fibers with a variation in the fiber diameter and the estimated average diameter is ∼150±20 nm. Very smooth surface and homogenously distributed ultra long nanofibers are observed from TEM analysis. The newly fabricated TNF electrode delivered a specific capacitance of 75 Fg −1 and retained 95% capacitance even after 5000 cycles. Moreover, it exhibited energy density and power density values of 24 Whkg −1 and 22.08 Wkg −1 respectively. The large capacitance, high coulombic efficiency and good structural stability demonstrate that TNFs should open up new opportunities for the next-generation high performance supercapacitors.

show abstract

Section: Electrochemical Propertiessupporting

confidence: 73%

Section: Electrochemical Propertiesmentioning

confidence: 99%

Electrospun TiO₂ nanofiber electrodes for high performance supercapacitors

Narayana

Hussain

Reddy

2020

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…These results are in accord with the CV tests. 91 The specic capacitance of the ICS-TiO 2 electrode was calculated according to the following formula: [92][93][94]…”

Section: Electrochemical Characterization Of Ics-tiomentioning

confidence: 99%

“…The ICS-TiO 2 electrode fabricated in the present work showed improved performance in terms of power and energy density as compared to the TiO 2 nanober-based electrode reported previously. 91 The performances of the carbon-TiO 2 composites from literature are given in Table 1. 88,92,[95][96][97][98] The improvement in the performance is because of the increased electrical conductivity and surface area of the ISC-TiO 2 electrode with the coating of the sucrose-derived carbon.…”

Section: Electrochemical Characterization Of Ics-tiomentioning

confidence: 99%

In situcarbon-supported titanium dioxide (ICS-TiO₂) as an electrode material for high performance supercapacitors

et al. 2020

View full text Add to dashboard Cite

Supercapacitors have attracted significant attention in the last few years as they have the capability to fulfill the demand for both power and energy density in many energy storage applications. In this study, an in situ carbon-supported titanium oxide (ICS-TiO 2 ) electrode has been prepared using sucrose and TiO 2 powder. The ICS-TiO 2 powder was prepared by slipcasting, followed by the annealing of the TiO 2 slurry. Sucrose was added to the TiO 2 slurry as a soluble carbon source, and was converted into carbon at 600 C then coated on the TiO 2 particles. The morphological and structural evolution of the electrode was investigated by FEG-SEM, FEG-TEM, XRD, BET, FTIR, XPS and Raman spectroscopy. The electrochemical characterization of ICS-TiO 2 demonstrated that this material exhibits an efficient value of specific capacitance (277.72 F g À1 at 25 mV s À1 ) for charge storage. ISC-TiO 2 also exhibits a specific capacitance of 180 F g À1 at 2 A g À1 in a 1 M Na 2 SO 4 aqueous electrolyte. The results suggest that ICS-TiO 2 can be utilized as a highperformance electrode material for supercapacitors with desirable electrochemical properties. Fig. 3 (a) Nitrogen adsorption/desorption isotherms; (b) nitrogen desorption/desorption pore size distribution; (c) XRD pattern, (d) Raman spectra; (e) FTIR spectra of TiO 2 and ICS-TiO 2 ; (f) TGA of ICS-TiO 2 .This journal is

show abstract

“…He et al [103] reported the fabrication of 100-300 nm conductive TiO 2 nanofibers using KOH treatment. In this study, a mixture solution of PVP and titanium tetraisopropanolate was used to produce nanofibers for supercapacitor electrode applications using electrospinning.…”

Section: Titanium Oxide (Tio 2 ) Nanofibersmentioning

confidence: 99%

Recent Trends in Electrospinning of Polymer Nanofibers and their Applications as Templates for Metal Oxide Nanofibers Preparation

Zagho¹,

Elzatahry²

2016

Electrospinning - Material, Techniques, and Biomedical Applications

View full text Add to dashboard Cite

Scientists have been paying a special atention for the synthesis of one-dimensional D) morphologies to atain new phenomena and novel physicochemical characteristics of materials. Furthermore, D nanostructures exhibit long axial ratio, which has a great inluence on the physical and chemical properties of materials. It is worth mentioning that electrospinning is one of the most common and eicient techniques used for the preparation of D polymer composite nanoibers. Using electrospinning, nanoibers were fabricated by electrostatic stretching of polymer viscous solution by applying a high voltage. This chapter discusses the synthesis of metal oxide nanoibers such as tin oxide SnO 2 ), zinc oxide ZnO), titanium oxide TiO 2 ), and nickel oxide NiO) using electrospinning process of polymer solution containing metal precursors and followed by annealing procedures to eliminate the polymer galleries, which were chosen as a sacriicial template for the preparation of metal oxide nanoibers. SEM, XRD, and XPS are equipped to characterize the electrospun metal oxide nanoibers and the results setle the formation of homogeneously distributed metal oxide nanoibers.

show abstract

Supercapacitor of TiO 2 nanofibers by electrospinning and KOH treatment

Cited by 73 publications

References 30 publications

Electrospun TiO₂ nanofiber electrodes for high performance supercapacitors

Electrospun TiO₂ nanofiber electrodes for high performance supercapacitors

In situcarbon-supported titanium dioxide (ICS-TiO₂) as an electrode material for high performance supercapacitors

Recent Trends in Electrospinning of Polymer Nanofibers and their Applications as Templates for Metal Oxide Nanofibers Preparation

Contact Info

Product

Resources

About

Supercapacitor of TiO 2 nanofibers by electrospinning and KOH treatment

Cited by 73 publications

References 30 publications

Electrospun TiO2 nanofiber electrodes for high performance supercapacitors

Electrospun TiO2 nanofiber electrodes for high performance supercapacitors

In situcarbon-supported titanium dioxide (ICS-TiO2) as an electrode material for high performance supercapacitors

Recent Trends in Electrospinning of Polymer Nanofibers and their Applications as Templates for Metal Oxide Nanofibers Preparation

Contact Info

Product

Resources

About

Electrospun TiO₂ nanofiber electrodes for high performance supercapacitors

Electrospun TiO₂ nanofiber electrodes for high performance supercapacitors

In situcarbon-supported titanium dioxide (ICS-TiO₂) as an electrode material for high performance supercapacitors