Carbon cloth supported vanadium pentaoxide nanoflake arrays as high-performance cathodes for lithium ion batteries

• Published in: Electrochimica acta Vol. 149; pp. 349 - 354
• Main Authors: Pan, G.X., Xia, X.H., Cao, F., Chen, J., Zhang, Y.J.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 10.12.2014
• Subjects: Arrays; Carbon; cathode; Cathodes; Cloth; Deposition; Electrolytes; Lithium batteries; Lithium-ion batteries; Nanoflake arrays; Nanostructure; Vanadium pentaoxide; Vanadium pentoxide; Lithium batteries; Nanoflake arrays; cathode; Vanadium pentaoxide
• ISSN: 0013-4686; 1873-3859
• DOI: 10.1016/j.electacta.2014.10.130

[Display omitted] •Construct a carbon cloth supported V2O5 nanoflake arrays.•V2O5 nanoflake arrays show high Li-storage properties.•Nanoflake arrays structure is favorable for fast ion and electron transfer Carbon cloth supported vanadium pentoxide (V2O5) nanoflake arrays are synthesized by a facile solvothermal deposition method. The V2O5 nanoflakes grow quasi-vertically to the carbon cloth and show a star-fruit like hierarchical structure composed of 3−4 secondary flakes with a thickness of ∼20nm. When applied as cathode material for lithium ion batteries, the V2O5 nanoflake arrays exhibit a high capacity of 292 mAh g−1 at 0.5C, and 94% capacity (275 mAh g−1) retained after 100 cycles. In addition, the V2O5 nanoflakes present an impressive high-rate capability with 62% capacity (181 mAh g−1) retention when the rate changes from 0.5C to 10C. The noticeable electrochemical performances are mainly due to the carbon cloth supported thin nanoflake array structure, which provides fast ion/electron transfer, sufficient contact between active materials and electrolyte, and alleviates the structure degradation caused by volume expansion during the cycling process.