Статья
2019

Flaky Structured V2O5: Morphology, Formation Scheme and Supercapactive Performance


B. Saravanakumar B. Saravanakumar , K. K. Purushothaman K. K. Purushothaman , G. Muralidharan G. Muralidharan
Российский электрохимический журнал
https://doi.org/10.1134/S1023193519010130
Abstract / Full Text

Vanadium pentoxide (V2O5) based electrodes for energy storage devices have captured sizeable attention in the past decade owing to their attractive physiochemical features. In the present work, flaky structured V2O5 was prepared using a single step hydrothermal route. The results from analytical investigations hold up well with the formation scheme proposed. The flaky morphology of V2O5 facilitates additional pathways for electron transport and effective ion access. When employed as a supercapacitor electrode in a neutral electrolyte, this flaky V2O5 electrode demonstrates a specific capacitance of 472 F g−1. Besides, it retains maximum capacitance at higher current density confirming its good rate performance. An asymmetric type supercapacitor using flaky V2O5 as positive electrode and activated carbon as negative electrode exhibits specific capacitance of 69 F g−1. This device shows energy density of 10 W h kg−1 within the operational window of 1 V.

Author information
  • Department of Physics, Dr. Mahalingam College of Engineering and Technology, Pollachi, 642003, India

    B. Saravanakumar

  • Department of Physics, Aringar Anna Government Arts and Science College, Karaikal, Puduchery, 609605, India

    K. K. Purushothaman

  • Department of Physics, Gandhigram Rural Institute, Gandhigram, Dindigul, Tamilnadu, 624302, India

    G. Muralidharan

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