Facile hydrothermal synthesis of vanadium oxides nanobelts by ethanol reduction of peroxovanadium complexes

Zhang, Yifu; Chen, Chongxue; Wu, Weibing; Niu, Fei; Liu, Xinghai; Zhong, Yi; Cao, Yuliang; Liu, Xin; Huang, Chi

doi:10.1016/j.ceramint.2012.06.001

Cited by 69 publications

(13 citation statements)

References 62 publications

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“…The typical TEM images of the samples are shown in figure 5. Without any additives, it could be observed from figure 5a and b that the Mo-doped VO 2 (B) displayed the belt-like morphology, thus VO 2 (B) nanomaterials were synthesized in agreement with the previous report [42]. The average diameter was in the range of 50-100 nm and the length was up to 1 μm.…”

Section: Characterization Of Mo-doped Vo X Nanomaterialssupporting

confidence: 87%

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Influence of the electrochemical properties of vanadium oxides on specific capacitance by molybdenum doping

Huang

Zhang

2019

Bull Mater Sci

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Molybdenum (Mo)-doped vanadium dioxide (VO 2 (B)) nanobelts were successfully synthesized using commercial vanadium pentoxide (V 2 O 5) as the starting material and ammonium molybdate as the dopant by a simple hydrothermal route. Then, Mo-doped VO 2 (B) nanobelts were transformed to Mo-doped V 2 O 5 nanobelts by calcination at 400 • C under an air atmosphere. The samples were characterized by X-ray powder diffraction, energy-dispersive X-ray spectrometer, elemental mapping, X-ray photoelectron spectroscopy, X-ray fluorescence and transmission electron microscopy techniques. The results showed that Mo-doped VO 2 (B) and V 2 O 5 solid solution with high purity were obtained. The electrochemical properties of Mo-doped VO 2 (B) and V 2 O 5 nanobelts as supercapacitor electrodes were measured using cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD). The specific capacitance of VO 2 (B) nanobelts slightly declines with Mo doping, however, the specific capacitance of V 2 O 5 nanobelts greatly improves with Mo doping. Mo-doped V 2 O 5 nanobelts exhibit the specific capacitance as high as 526 F g −1 at the current density of 1 A g −1. Both CV and GCD curves show that they have good rate capability and retain 464, 380, 324 and 273 F g −1 even at a high-current density of 2, 5, 10 and 20 A g −1 , respectively. It turns out that Mo-doped V 2 O 5 nanobelts are ideal materials for supercapacitor electrodes in the present work. Keywords. Mo-doped VO 2 (B) nanobelts; Mo-doped V 2 O 5 nanobelts; chemical synthesis; electrochemical properties; specific capacitance.

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Section: Characterization Of Mo-doped Vo X Nanomaterialssupporting

confidence: 87%

“…Synthesis of Mo-doped VO 2 (B) nanomaterials was carried out according to our previous report [42] with slight modification. In a typical procedure, 0.455 g of commercial V 2 O 5 powder was dispersed into 28 ml of deionized water in a 100 ml beaker with magnetic stirring at room temperature for 10 min.…”

Section: Synthesis Of Mo-doped Vo 2 (B) Nanomaterialsmentioning

confidence: 99%

Influence of the electrochemical properties of vanadium oxides on specific capacitance by molybdenum doping

Huang

Zhang

2019

Bull Mater Sci

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“…Over the past decades, enormous attention has been paid to transition metal oxides/hydroxides/sulphides electrode materials. Among the various metal oxides, vanadium oxides (VO x ) have received increasing interest as supercapacitor electrodes because of their low cost, multiple valence states (V 5+ , V 4+ , V 3+ and V 2+ ) and unique layered structure, which play a major role in delivering high energy density and allowing efficient ion diffusion [10,15,[17][18][19][20][21][22][23][24][25][26][27][28][29][30]. VO x with novel structures have better capacitive property than massive VO x due to the charge storage mechanism, and the electrochemical performance of energy storage elements is closely related to the morphology and crystal structure of electrode materials [31,32].…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis and characterization of rough surface $$\mathrm{V}_{2}\hbox {O}_{5}$$ V 2 O 5 nanomaterials for pseudo-supercapacitor electrode material with high capacitance

Zhang

Huang

2017

Bull Mater Sci

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V 2 O 5 nanomaterials with rough surface were synthesized using commercial V 2 O 5 , ethanol (EtOH) and H 2 O as the starting materials by a simple hydrothermal route and combination of calcination. The electrochemical properties of V 2 O 5 nanomaterials as electrodes in a supercapacitor device were measured using cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) method. V 2 O 5 nanomaterials exhibit the specific capacitance of 423 F g −1 at the current density of 0.5 A g −1 and retain 327 F g −1 even at the high current density of 10 A g −1. The influence of the ratio of EtOH/H 2 O, the calcined time and temperature on the morphology, purity and electrochemical property of the products is discussed in detail. The results revealed that the ratio of EtOH/H 2 O = 10/25 and calcination at 400 • C for 2-4 h are favourable for preparing V 2 O 5 nanomaterials and they exhibited the best electrochemical property. The novel morphology and high specific surface area are the main factors that contribute to high electrochemical performance of V 2 O 5 nanomaterials during the charge-discharge processes. It turns out that V 2 O 5 nanomaterials with rough surface is an ideal material for supercapacitor electrode in the present work.

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“…Vanadium [15] are interesting electrode materials for lithium ion batteries because of its typical intercalation structure, low cost and tunable oxidation state (from +2 to +5). Among these, VO 2 and V 3 O 7 Á H 2 O have attracted much attention due to its potential application in transistors, electrical and optical switch devices and lithium ion battery [16][17][18]. VO 2 (B) is one of vanadium dioxide polymorphs [6].…”

Section: Introductionmentioning

confidence: 99%

Mesoporous vanadium oxide nanostructures: Hydrothermal synthesis, optical and electrochemical properties

Mjejri¹,

Etteyeb²,

Sediri

2014

Ceramics International

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Facile hydrothermal synthesis of vanadium oxides nanobelts by ethanol reduction of peroxovanadium complexes

Cited by 69 publications

References 62 publications

Influence of the electrochemical properties of vanadium oxides on specific capacitance by molybdenum doping

Influence of the electrochemical properties of vanadium oxides on specific capacitance by molybdenum doping

Facile synthesis and characterization of rough surface $$\mathrm{V}_{2}\hbox {O}_{5}$$ V 2 O 5 nanomaterials for pseudo-supercapacitor electrode material with high capacitance

Mesoporous vanadium oxide nanostructures: Hydrothermal synthesis, optical and electrochemical properties

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