In this work, the incorporation of V2O5 into reduced graphene oxide (rGO) and the characterization of the obtained material in a three-electrode system were carried out. In addition, the synthesis and characterization of rGO paper in which V2O5 was incorporated was carried out. The goal of the work was to obtain a stable, flexible and free-standing material that will be suitable as a cathode material in Zn-ion water based batteries. Examination of different rGO/ V2O5 electrodes showed that higher capacities are obtained in 2 mol dm^-3 ZnSO4 solution compared to 3 mol dm^-3 ZnSO4 solution. It was also shown that highercapacities were obtained with electrodes with 50% V2O5 than with electrodes with 70% V2O5 and that the material was better utilised when a smaller mass of active material was applied to the electrode. In this research, GO paper with 70% V2O5 was prepared and it was reduced electrochemically at -1.4 V, in order to convert graphene oxide (GO to rGO. In the prepared battery, Zn played the role of the anode while rGO/ V2O5 was used as the cathode. The properties of the Zn//rGO/ V2O5 battery were tested by chronoamperometry (CA) and cyclic voltammetry (CV) methods. In the cyclic voltammograms, anodic and cathodic current peaks corresponding to the V2O5 redox reaction were recorded. The battery capacity values, obtained by the CV method, range from 41.06 mAh g^-1 to 311.85 mAh g^-1 at scan rates from 50 to 1 mV s^-1. The galvanostatic process of charging and discharging the battery was also carried out. The battery capacity values, recorded during the galvanostatic test, range from 77.78 mAh g^-1 at the highest current (4.3 mA, 5.0 A g^-1 ), to 306.07 mAh g^-1 at the lowest current (0 .7 mA, 0.8 A g^-1 ).