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The influence of nanostructures size on V2O5 electrochemical properties as cathode materials for lithium ion battery
Abstract
In this paper, V2O5 nanostructures with a size depending on the annealing temperature are successfully synthesized by a sol-gel method. The crystal structure and morphology of samples are characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), selected area electron diffraction (SEAD) and scanning electron microscopy (SEM), respectively. Electrochemical testing such as discharge–charge cycling (CD) and cyclic voltammetry (CV) are employed in evaluating their electrochemical properties as cathode materials for lithium ion battery. One-dimensional nanostructures are successfully synthesized with the same structure, composition and similar shape. Results reveal that for one-dimensional nanostructures, next to the thickness which must be as small as possible, the length of nanocrystals is crucial and should be above 2 µm. The longer nanostructures obtained at 650 °C deliver a discharge specific capacity of 281 mAh g-1 at a current rate of C/5 which is over 95.5% of the theoretical capacity for two Li+ ions intercalation (294 mAh g-1) within a voltage window of 2.0-4.0 V.
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Authors (6)
-
Smalc-koziorowska Julita dr inż.
- Polska Akademia Nauk Warszawa Instytut Wysokich Ciśnień
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Keywords
Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
RSC Advances
no. 6,
edition 61,
pages 1 - 9,
ISSN: 2046-2069 - Language:
- English
- Publication year:
- 2016
- Bibliographic description:
- Prześniak-Welenc M., Karczewski J., Julita S., Łapiński M., Sadowski W., Kościelska B.: The influence of nanostructures size on V2O5 electrochemical properties as cathode materials for lithium ion battery// RSC Advances. -Vol. 6, iss. 61 (2016), s.1-9
- DOI:
- Digital Object Identifier (open in new tab) 10.1039/c6ra05695d
- Verified by:
- Gdańsk University of Technology
Referenced datasets
- dataset SEM micrographs of V2O5 nanorods as cathode material in Li-ion batteries
- dataset TEM micrographs of V2O5 nanostructures
- dataset Electrochemical impedance spectra and CV curves of V2O5 nanocrystals
- dataset Electrochemical impedance spectra and CV curves of V2O5 nanorods
- dataset SEM micrographs of V2O5 nanocrystals as cathode material in Li-ion batteries
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