Chemical Papers

, Volume 72, Issue 11, pp 2849–2857 | Cite as

Synthesis of vanadium oxides nanosheets as anode material for asymmetric supercapacitor

  • Zhi-Qiang HouEmail author
  • Zhi-Guang Yang
  • Yong-Ping GaoEmail author
Original Paper


Vanadium oxides (V2O5) have been intensely investigated for advanced supercapacitors due to its extensive multifunctional properties of typical layered structure and multiple stable oxide states of vanadium in its oxides. In this study, V2O5 nanosheets are synthesized via V2O5 xerogel solvothermal reaction in ethanol solvent at 200 °C for 12 h. The V2O5 nanosheets facilitate the easy accessibility of ions and can provide more area available for electrochemical reactions. We have achieved the highest specific capacitance of 298 F/g and good rate discharge for V2O5 electrodes. Notably, the capacitance still retains a high retention rate of 85% after 10,000 cycles at 200 mV/s. Furthermore, asymmetric supercapacitors is assembled based on V2O5 nanosheets and active carbon electrode, and a specific capacitance of 13.2 F/g is obtained at 1 A/g, with a energy density of 4.7 Wh/kg at a power density of 0.798 kW/kg and remains 2.28 Wh/kg at 7.992 kW/kg. Based on these results, the asymmetric supercapacitor exhibits a good cycle life with 77.3% capacitance retention after 3000 cycles. It suggests that the V2O5 nanosheets are promising electrode material for electrochemical supercapacitors.


V2O5 xerogel V2O5 nanosheets Specific capacitance Supercapacitor 



The authors wish to acknowledge the financial support provided by the High Level Personal Fund of Zhoukou Normal University (ZKNUC2017043), School-based Program of Zhoukou Normal University (ZKNUB 1201804), Key Scientific Research Project of Henan Province (18B150024), Key Project of Xinyang College (2017zd03), Xinyang College Students’ Innovative Entrepreneurial Training Program (CX20170031).

Supplementary material

11696_2018_504_MOESM1_ESM.doc (446 kb)
Supplementary material 1 (DOC 446 kb)


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Copyright information

© Institute of Chemistry, Slovak Academy of Sciences 2018

Authors and Affiliations

  1. 1.School of Chemistry and Chemical EngineeringZhou Kou Normal UniversityHenanChina
  2. 2.College of Science and Technology, Xinyang CollegeXinyangChina

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