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Synthesis and characterization of hollow V2O5 microspheres for supercapacitor electrode with pseudocapacitance Cover

Synthesis and characterization of hollow V2O5 microspheres for supercapacitor electrode with pseudocapacitance

Materials Science-Poland
Volume 35 (2017): Issue 1 (March 2017)
By: Yifu Zhang  
Open Access
|Feb 2017

Figures & Tables

FE-SEM images of the template carbon spheres.
FE-SEM images of the as-obtained sample.
XRD patterns of the as-obtained hollow microspheres.
IR spectrum of the as-obtained HVOM.
(a) Nitrogen adsorption-desorption isotherms and (b) BET curve of the as-obtained HVOM.
CV curves of HVOM in 1 mol·dm–3 LiNO3 at a scan rate 20 mV·s–1: (a) on various potential limits; (b) compared with foamed Ni.
(a) Galvanostatic charge and discharge curves at different current densities of HVOM; (b) Ragone plot of HVOM.
Cycling behavior of HVOM recorded by CV at 20 mV·s–1 scan rate.
Cycling behavior of HVOM recorded at a current density of 1 A·g–1 by GCD: (a) galvanostatic charge and discharge curves; (b) cyclic stability of the specific capacitance.

Comparison of specific capacitance of the HVOM with V2O5 materials reported in the previous literature_

Types of V2O5 materialElectrolytePotential range [V]Specific capacitance [F·g–1]Literature
V2O5 nanoflowers, nanoballs, nanowires, nanorods1 mol·dm–3 Na2SO40 to 1119, 161, 177, 235[28]
V2O5 nanobelts, nanoparticles, microspheres1 mol·dm–3 LiNO3–0.4 to 0.8140, 276, 308[3]
Electrospun V2O5 nanofibers2 mol·dm–3 KCl0 to 0.9 V190[26]
Electrospun V2O5 nanofibers1 mol·dm–3 LiClO4 in PC0 to 3250[26]
Nano porous V2O52 mol·dm–3 KCl–0.2 to 0.8214[38]
V2O5 powders2 mol·dm–3 KCl–0.2 to 0.7262[39]
Interconnected V2O5 nanoporous network0.5 mol·dm–3 K2SO40.2 to 0.8 V304[27]
V2O5 nanowires1 mol·dm–3 LiNO3–0.4 to 0.8351[24]
Hollow spherical V2O55 mol·dm–3 LiNO3–0.2 to 0.8479[22]
β-V2O5 thin films1 mol·dm–3 LiClO4 in PC–0.8 to 1.2346[40]
Hollow V2O5 microspheres1 mol·dm–3 LiNO3–0.4 to 0.6488This work
DOI: https://doi.org/10.1515/msp-2017-0015 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
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Language: English
Page range: 188 - 196
Submitted on: May 31, 2016
|
Accepted on: Dec 14, 2016
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Published on: Feb 24, 2017
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
V2O5,
hollow microspheres,
electrical properties,
supercapacitor,
pseudocapacitance
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2017 Yifu Zhang, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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