V2O5·0.6H2O nanoribbons as cathode material for asymmetric supercapacitor in K2SO4 solution

Qu, Qianhui; Shi, Yifeng; Li, L.L.; Guo, Wei; Wu, Yuping; Zhang, H.P.; Guan, Shiyou; Holze, Rudolf

doi:10.1016/j.elecom.2009.05.003

Cited by 277 publications

(76 citation statements)

References 22 publications

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“…V 2 O 5 ·nH 2 O is considered to be an ideal supercapacitor material due to its high surface area and high variable valence state [6,7]. However, its low electronic conductivity limits the large-scale application in energy storage.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of V2O5·1.6H2O/graphene composite and its application in supercapacitors

Geng

Wang

2015

J Solid State Electrochem

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V 2 O 5 ·nH 2 O/graphene composite is synthesized by self-assembly of V 2 O 5 ·1.6H 2 O nanobelts on the surface of graphene via a simple hydrothermal method. The structure and morphologies of the composites are characterized by thermogravimetry analyzer, x-ray diffraction, and scanning electron microscope, respectively. It's found that the V 2 O 5 · 1.6H 2 O nanobelts are in width of 90 nm and length of 1.5 μm. The electrochemical behaviors of the composites in supercapacitors are tested by cyclic voltammetry and galvanostatic charge/discharge in a three-electrode system in KCl aqueous solution. Three pairs of redox peaks and voltage plateaus are observed correspondingly in the cyclic voltammetry curves and galvanostatic charge/discharge curves. The hybrid capacitance of this composite reaches 579 F/g at current density of 1 A/g and decreases 21 % after 5000 cycles at 4 A/g.

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Section: Introductionmentioning

confidence: 99%

Synthesis of V2O5·1.6H2O/graphene composite and its application in supercapacitors

Geng

Wang

2015

J Solid State Electrochem

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“…carbon nanotubes [2], carbon [3] and graphene [4]) and transition metal oxides (e.g. Co 3 O 4 [5,6], NiO [7], RuO 2 [8], SnO 2 [9], MnO 2 [10], V 2 O 5 [11], and so forth). Recently, graphene has been shown to be an effective material for constructing supercapacitor electrodes due to its large surface area, high mechanical stability and electrical conductivity [12,13].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis of simonkolleite microplatelets on nickel foam-graphene for electrochemical supercapacitors

Khamlich

Bello

Fabiane

et al. 2013

J Solid State Electrochem

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Nickel foam-graphene (NF-G) was synthesised by chemical vapour deposition (CVD) followed by facial in situ aqueous chemical growth of simonkolleite (Zn 5 (OH) 8 Cl 2 ·H 2 O) under hydrothermal conditions to form NF-G/simonkolleite composite. X-ray diffraction and Raman spectroscopy show the presence of simonkolleite on the NF-G, while scanning electron and transmission electron microscopies show simonkolleite micro-plates like structure evenly distributed on the NF-G. Electrochemical measurements of the composite electrode give a specific capacitance of 350 Fg -1 at current density of 0.7 Ag -1 for our device measured in three-electrode configuration. The composite also shows a rate capability of 87% capacitance retention at a high current density of 5 Ag -1 , which makes it a promising candidate as an electrode material for supercapacitor applications.

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“…29,30 Specifically, 0.30 g of ammonium metavanadate (NH 4 VO 3 , 99.0%, Alfa Aesar) and 0.50 g of poly(ethylene oxide)-block-poly(propylene oxide)-block-poly(ethylene oxide) copolymer (P123, MW = 5,800, Sigma Aldrich) were dissolved in 30 mL of deioned water containing 1.5 mL of 2 M HCl. The mixture was stirred at room temperature for 24 h and then transferred into an autoclave and heated at 120 °C for 24 h. The resulting precipitate was rinsed with deioned water and acetone and then dried at 80 °C for 12 h. PPy/V 2 O 5 nanocomposite product was precipitated naturally and washed with deionized water and methanol until the supernatant is transparent.…”

Section: Synthesis Of V 2 O 5 Nfsmentioning

confidence: 99%

Understanding the Influence of Polypyrrole Coating over V2O5 Nanofibers on Electrochemical Properties

Sun¹,

Li²,

Mao³

2015

Electrochimica Acta

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V2O5·0.6H2O nanoribbons as cathode material for asymmetric supercapacitor in K2SO4 solution

Cited by 277 publications

References 22 publications

Synthesis of V2O5·1.6H2O/graphene composite and its application in supercapacitors

Synthesis of V2O5·1.6H2O/graphene composite and its application in supercapacitors

Hydrothermal synthesis of simonkolleite microplatelets on nickel foam-graphene for electrochemical supercapacitors

Understanding the Influence of Polypyrrole Coating over V2O5 Nanofibers on Electrochemical Properties

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