The influence of nanostructures size on V2O5 electrochemical properties as cathode materials for lithium ion battery
Abstrakt
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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Informacje szczegółowe
- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuł w czasopiśmie wyróżnionym w JCR
- Opublikowano w:
-
RSC Advances
nr 6,
wydanie 61,
strony 1 - 9,
ISSN: 2046-2069 - Język:
- angielski
- Rok wydania:
- 2016
- Opis bibliograficzny:
- 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:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1039/c6ra05695d
- Weryfikacja:
- Politechnika Gdańska
Powiązane datasety
- dane badawcze SEM micrographs of V2O5 nanorods as cathode material in Li-ion batteries
- dane badawcze TEM micrographs of V2O5 nanostructures
- dane badawcze Electrochemical impedance spectra and CV curves of V2O5 nanocrystals
- dane badawcze Electrochemical impedance spectra and CV curves of V2O5 nanorods
- dane badawcze SEM micrographs of V2O5 nanocrystals as cathode material in Li-ion batteries
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