Electrodeposition of Vanadium Oxides at Room Temperature as Cathodes in Lithium-Ion Batteries
AbstractElectrodeposition of vanadium pentoxide coatings was performed at room temperature and a short growth period of 15 min based on an alkaline solution of methanol and vanadyl (III) acetyl acetonate. All samples were characterized by X-ray diffraction, Raman spectroscopy, field-emission scanning electron microscopy, cyclic voltammetry, and electrochemical impedance spectroscopy. The current density and electrolyte concentration were found to affect the characteristics of the as-grown coatings presenting enhanced crystallinity and porous structure at the highest values employed in both cases. The as-grown vanadium pentoxide at current density of 1.3 mA·cm−2 and electrolyte concentration of 0.5 M indicated the easiest charge transfer of Li+ across the vanadium pentoxide/electrolyte interface presenting a specific discharge capacity of 417 mAh·g−1, excellent capacitance retention of 95%, and coulombic efficiency of 94% after 1000 continuous Li+ intercalation/deintercalation scans. One may then suggest that this route is promising to prepare large area vanadium pentoxide electrodes with excellent stability and efficiency at very mild conditions. View Full-Text
Share & Cite This Article
Rasoulis, M.; Vernardou, D. Electrodeposition of Vanadium Oxides at Room Temperature as Cathodes in Lithium-Ion Batteries. Coatings 2017, 7, 100.
Rasoulis M, Vernardou D. Electrodeposition of Vanadium Oxides at Room Temperature as Cathodes in Lithium-Ion Batteries. Coatings. 2017; 7(7):100.Chicago/Turabian Style
Rasoulis, Michalis; Vernardou, Dimitra. 2017. "Electrodeposition of Vanadium Oxides at Room Temperature as Cathodes in Lithium-Ion Batteries." Coatings 7, no. 7: 100.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.