Journal
ELECTROCHIMICA ACTA
Volume 56, Issue 16, Pages 5532-5537Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2011.03.085
Keywords
V2ON; Thin film; Rechargeable lithium batteries; DC sputtering
Categories
Funding
- China Postdoctoral Science Foundation [20100470660]
- Science & Technology Commission of Shanghai Municipality [08DZ2270500, 09JC1401300]
- 973 Programs of China [2011CB933300]
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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. (C) 2011 Elsevier Ltd. All rights reserved.
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