Release Time:2025-12-01  Hits:

Date of Publication: 2022-10-09

Journal: 功能材料

Issue: 4

Page Number: 4075-4079

ISSN: 1001-9731

Abstract: V2O5 film was directly grown on Ni foam substrate by a facile chemical bath deposition method.The morphology and structure of as-prepared V2O5 film was conducted by SEM and XRD,and the specific surface and pore distribution were measured by nitrogen adsorption and desorption measurements.The orthorhombic V2O5 presents three-dimensional flower-like porous microstructure with BET area of 68.7 m2/g and average pore diameter of 7.2 nm.The electrochemical performance of V2O5 film electrode in 3 mol/L KNO3 solution was investigated by cyclic voltammetry,electrochemical impedance spectroscopy and galvanostatic charge/discharge measurements.The results demonstrates that the 3D flower-like microstructure and large pores shows excellent pseudocapacitance behavior and good stability,delivering capacitances of 392,338 and 276 F/g in 3 mol/L KNO3 at current densities of 1,2 and 3 A/g,respectively.

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