Study on the optical and electrochemical performance of V₂O₅ with various morphologies

Abstract

The morphology of V₂O₅ has an important influence on its optical properties and electrochemical performance. Herein, four types of vanadium pentoxide structures such as nanowires, layer-by-layer, solid spheres and hollow spheres, were prepared by the combination of the hydrothermal synthesis and calcinations. Various techniques including FT-IR, UV-vis and Raman were used to measure the optical properties. Cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) measurements were used to evaluate the electrochemical properties of the samples. The optimal electrochemical performance was obtained from V₂O₅ hollow spheres. The experimental results indicated that nanowires exhibited higher transmittance in the near-IR region and V₂O₅ hollow spheres were an ideal electrode material for supercapacitors.

Graphical Abstract

Keywords:

• V₂O₅
• morphologies
• optical properties
• electrochemical properties

Conflict of interest

The authors declare that they have no conflicts of interest.

Additional information

Funding

This work was supported by the Natural Science Foundation of Liaoning Province (No. 20170520427).