The electrochemical reduction of oxidation products of tetrafluoro-p-hydroquinone, TFQH(2), and 3-fluorocatechol, 3FQH(2), in a 1.0 M sulfuric acid solution is used as the positive electrode reaction to manufacture of hybrid redox flow batteries, HRFBs. Our previous studies and the results of this manuscript demonstrate that the electrochemical oxidation products 3FQH(2) and TFQH(2) are stable at time window of the cyclic voltammetric method as well as under different applied experimental conditions. Also, TFQH(2) is a suitable compound for manufacturing of HRFBs. This is due to the stability of the electrochemical oxidation product of TFQH(2) at time window of the electrolysis process. In addition, oxidation of electrodeposited cadmium on the copper electrode surface is used as the negative electrode reaction. Galvanostatic charge-discharge cycles are performed to determine the energy and coulombic performances of these compounds when they are used as active materials in fabrication of HRFBs. The proposed HRFBs were frequently charged and discharged in a voltage range of 0.8 to 1.6 V. The results demonstrate stable charge-discharge cycling over 40 cycles with the energy efficiency of 80% and a negligible capacity loss at room temperature for TFQH(2). According to the experimental results, although the difference between the formal redox potential of 3FQH(2) and cadmium is greater than that of TFQH(2) and cadmium, the coulombic and energy efficiencies of an HRFB including TFQH(2) is significantly higher than those of one including 3FQH(2). Finally, TFQH(2) is proposed as an excellent electroactive material for fabrication of an HRFB. (C) 2016 Elsevier B.V. All rights reserved.