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Single-crystalline bilayered V2O5 nanobelts for high-capacity sodium-ion batteries

Journal Article


Abstract


  • Single-crystalline bilayered vanadium oxide nanobelts were synthesized by a simple solvothermal method. FESEM and AFM analyses identified the nanobelt morphology of the as-prepared vanadium oxide with a rectangular cross-section and a thickness of approximately 50 nm. XRD and TEM characterizations revealed the presence of a large (001) interlayer spacing (∼11.53 Å), which can accommodate Na-ion insertion and extraction. When applied as cathode materials in Na-ion batteries, vanadium oxide nanobelts exhibited a high capacity of 231.4 mA h g-1 at a current density of 80 mA g-1. This corresponds to the theoretical capacity to form Na2V 2O5 on Na-ion insertion. Vanadium oxide nanobelts also demonstrated an excellent high-rate performance and a satisfactory cyclability. These superior electrochemical performances could be ascribed to the unique bilayered vanadium oxide nanobelts with dominantly exposed {100} crystal planes, which provide large interlayer spacing for facile Na-ion insertion/extraction. Single-crystalline bilayered vanadium oxide nanobelts could be promising cathode materials for high-performance Na-ion batteries. © 2013 American Chemical Society.

UOW Authors


  •   Wang, Guoxiu (external author)

Publication Date


  • 2013

Citation


  • Su, D., & Wang, G. (2013). Single-crystalline bilayered V2O5 nanobelts for high-capacity sodium-ion batteries. ACS Nano, 7(12), 11218-11226. doi:10.1021/nn405014d

Scopus Eid


  • 2-s2.0-84891370740

Start Page


  • 11218

End Page


  • 11226

Volume


  • 7

Issue


  • 12

Abstract


  • Single-crystalline bilayered vanadium oxide nanobelts were synthesized by a simple solvothermal method. FESEM and AFM analyses identified the nanobelt morphology of the as-prepared vanadium oxide with a rectangular cross-section and a thickness of approximately 50 nm. XRD and TEM characterizations revealed the presence of a large (001) interlayer spacing (∼11.53 Å), which can accommodate Na-ion insertion and extraction. When applied as cathode materials in Na-ion batteries, vanadium oxide nanobelts exhibited a high capacity of 231.4 mA h g-1 at a current density of 80 mA g-1. This corresponds to the theoretical capacity to form Na2V 2O5 on Na-ion insertion. Vanadium oxide nanobelts also demonstrated an excellent high-rate performance and a satisfactory cyclability. These superior electrochemical performances could be ascribed to the unique bilayered vanadium oxide nanobelts with dominantly exposed {100} crystal planes, which provide large interlayer spacing for facile Na-ion insertion/extraction. Single-crystalline bilayered vanadium oxide nanobelts could be promising cathode materials for high-performance Na-ion batteries. © 2013 American Chemical Society.

UOW Authors


  •   Wang, Guoxiu (external author)

Publication Date


  • 2013

Citation


  • Su, D., & Wang, G. (2013). Single-crystalline bilayered V2O5 nanobelts for high-capacity sodium-ion batteries. ACS Nano, 7(12), 11218-11226. doi:10.1021/nn405014d

Scopus Eid


  • 2-s2.0-84891370740

Start Page


  • 11218

End Page


  • 11226

Volume


  • 7

Issue


  • 12