Chalcopyrite (CuFeS2) is a widely available copper mineral and like other transition metal sulfides it may be a suitable material for energy storage applications. In this preliminary study, a composite electrode was built from synthetic CuFeS2 sandwiched between graphite. Scanning Electron Microscopy (SEM), powder X-ray diffraction (XRD) and X-ray photoelectron spectroscopic (XPS) analyses revealed that the post-synthesis CuFeS2 consisted of microspheres with sulfide (S2−, S22− and Sn2−) surface species. The nature of the charge distribution within this composite electrode was determined and compared with a graphite felt (CF) electrode in 0.2M H2SO4 solution at 25°C. The total current response was partitioned into non-faradaic and faradaic components by charging (under-potential deposition) and discharging through cyclic voltammetric analysis. A large amount of the specific current response (93.5%) of the composite electrode was faradaic in nature. The pseudocapacitive under potential adsorption/desorption of H+ ions was reversible and a relatively higher specific capacitance of 1.265Fg−1 was achieved at 0.1Ag−1 (as compared to the 0.588Fg−1 obtained from the CF electrode). Potentiostatic impedance spectroscopy (0≥η≥−0.9V) within the charging regime and cathodic potentiodynamic polarization scans revealed that the graphite fibers exhibited catalytic behavior. The large polarization, higher pseudocapacitance (Φp) and faradaic parallel resistance (Rp) within the potential region (EOCP>E>E°H+/H2) confirmed the generation of an intermediate (H°) species in the CF electrode. The ‘internal charge mediator’ character of the graphite felt in the composite electrode, therefore, provided a large faradaic current response. Finally, based on the electrochemical analysis, the charge/discharge mechanism of the composite electrode is proposed. The addition of CuFeS2 in CF increased the specific capacitance and maintained the columbic efficiency of ∼98%. However, confirmation of its potential use as an active electrode material in energy storage devices requires further research.