کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
189479 | 459680 | 2011 | 6 صفحه PDF | دانلود رایگان |
V2ON thin film has been successfully fabricated by reactive dc sputtering method and annealing process and was investigated for its electrochemistry with lithium. The reversible discharge capacities of V2ON/Li cells cycled between 0.01 and 4.0 V were found in the range of 803–915 mAh g−1 during the first 50 cycles. By using ex situ scanning electron microscopy, transmission electron microscopy, selected-area electron diffraction and X-ray photoelectron spectroscopy measurements, the reversible transformation between nanocrystalline V2ON and well dispersed V, Li2O, Li3N nano-composites were revealed in the lithium electrochemical reaction. V2ON thin film exhibits high reversible capacity and good cycle performance with remarkable lower polarization than VN thin film.
► We have prepared V2ON thin film by reactive dc sputtering method and annealing process.
► We investigated for its electrochemistry with lithium.
► V2ON thin films exhibit a large reversible specific capacity of 830 mAh g−1 with much less polarization than VN thin films.
► The reversible transformation between nanocrystalline V2ON and well dispersed V, Li2O, Li3N nano-composites were revealed.
Journal: Electrochimica Acta - Volume 56, Issue 16, 30 June 2011, Pages 5532–5537