A composite film of reduced graphene oxide modified vanadium oxide nanoribbons as a free standing cathode material for rechargeable lithium batteries

Hydrated vanadium pentoxide (V2O5·0.86H2O) nanoribbons modified with reduced graphene oxide (RGO) are synthesized by a hydrothermal process. These ribbons are 30 nm thick, 200 nm to 1 μm wide and above 50 μm long. Binder-free films are prepared by using these ribbons and annealed at 300 °C in nitrog...

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Bibliographic Details
Published in:Journal of power sources 2013-11, Vol.241, p.168-172
Main Authors: Sun, Yi, Yang, Shu-Bin, Lv, Li-Ping, Lieberwirth, Ingo, Zhang, Lin-Chao, Ding, Chu-Xiong, Chen, Chun-Hua
Format: Article
Language:English
Subjects:
Applied sciences
Cathode
Cathodes
Direct energy conversion and energy accumulation
Electric potential
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Exact sciences and technology
Graphene
Lithium batteries
Lithium battery
Materials
Nanocomposites
Nanomaterials
Nanoribbon
Nanostructure
Networks
Oxides
Ribbons
Vanadium oxide
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Summary:Hydrated vanadium pentoxide (V2O5·0.86H2O) nanoribbons modified with reduced graphene oxide (RGO) are synthesized by a hydrothermal process. These ribbons are 30 nm thick, 200 nm to 1 μm wide and above 50 μm long. Binder-free films are prepared by using these ribbons and annealed at 300 °C in nitrogen as the cathode for rechargeable lithium cells. The intertwining network of this free-standing VOx/RGO film provides efficient conduction pathways for electrons and short diffusion distances for Li ions. The electrochemical tests exhibit that this cathode film delivers a high reversible specific capacity (160 mAh g−1) and good cycling stability (133 mAh g−1 after 200 cycles) in the voltage range between 2.0 and 3.5 V. •RGO modified hydrated vanadium pentoxide nanoribbons are obtained by a facile hydrothermal process.•A free-standing VO2.07/RGO film is fabricated with these ribbons.•The binder-free free-standing VO2.07/RGO film electrode shows good electrochemical properties.
ISSN:0378-7753
1873-2755
DOI:10.1016/j.jpowsour.2013.04.093