Vanadium redox flow batteries (VRFBs) are assembled by stacking various components, which results in increase cell resistance. Herein, we propose bipolar plate-electrode integrated design to reduce contact resistance in VRFBs. By selectively impregnating a part of carbon felt with vinyl ester resin, the integrated structure was fabricated. Integrated structures consist of a hard layer and a soft layer, which act as a bipolar plate and an electrode, respectively. The integrated structure had 15% lower electrical resistance than conventional cell of VRFBs, which contribute to reduce ohmic overpotential in a polarization curve. Under a current density of 100 mA·cm-2, the energy efficiency of the integrated structure was 83.4%, which was 5% higher than that of conventional cell.