For a reversible one-step, one-electron electrochemical reaction, the anodic-to-cathodic CV peak split, ΔE, should be approximately 59 mV at any scan rate, a value unmet for either of the studied LIG samples . Aside from the irreversibility of the charge transfer process, disordered electrochemical behavior, such as enhanced peak separation in CV curves, may be an effect of an Ohmic drop. Ohmic drop is usually related to the low ionic conductivity of the electrolyte and corresponds to high electric resistance between WE and RE. Yet, considering the relatively high electric resistivity of conductive carbon species and the low cross-sectional surface area of porous LIG structures, high electric resistance between WE and CE may also lead to an Ohmic drop. The asymmetric shape of the CV curve, visible in Fig. , confirms the presence of such an Ohmic drop. Similar cases may be observed for conductive 3D-printed composites .