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Title: Amorphous vanadium oxide thin films as stable performing cathodes of lithium and sodium-ion batteries
Authors: Petnikota, Shaikshavali
Chua, Rodney
Zhou, Yang
Edison, Eldho
Srinivasan, Madhavi
Keywords: PLD
Amorphous Vanadium Oxide
Issue Date: 2018
Source: Petnikota, S., Chua, R., Zhou, Y., Edison, E., & Srinivasan, M. (2018). Amorphous vanadium oxide thin films as stable performing cathodes of lithium and sodium-ion batteries. Nanoscale Research Letters, 13, 363-. doi: 10.1186/s11671-018-2766-0
Series/Report no.: Nanoscale Research Letters
Abstract: Herein, we report additive- and binder-free pristine amorphous vanadium oxide (a-VOx) for Li- and Na-ion battery application. Thin films of a-VOx with a thickness of about 650 nm are grown onto stainless steel substrate from crystalline V2O5 target using pulsed laser deposition (PLD) technique. Under varying oxygen partial pressure (pO2) environment of 0, 6, 13 and 30 Pa, films bear O/V atomic ratios 0.76, 2.13, 2.25 and 2.0, respectively. The films deposited at 6‑30 Pa have a more atomic percentage of V5+ than that of V4+ with a tendency of later state increased as pO2 rises. Amorphous VOx films obtained at moderate pO2 levels are found superior to other counterparts for cathode application in Li- and Na-ion batteries with reversible capacities as high as 300 and 164 mAh g−1 at 0.1 C current rate, respectively. At the end of the 100th cycle, 90% capacity retention is noticed in both cases. The observed cycling trend suggests that more is the (V5+) stoichiometric nature of a-VOx better is the electrochemistry.
ISSN: 1931-7573
DOI: 10.1186/s11671-018-2766-0
Rights: © 2018 The Author(s). This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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