Interestingly, excess cation accumulation in the dedoped state was not observed. Instead, cation composition in the dedoped state was diminished compared to the doped state. This stood in contrast to previous reports where a dedoping occurs by both anion expulsion and cation insertion to counterbalance remaining anion dopants in both conjugated and radical OMIECs. It must be noted that these previous studies either did not employ metal halide salts, or in the case of radical polymers, employed non-aqueous electrolytes. The absence of cation accumulation highlights that aqueous metal halide transport in OMIEC based bioelectronic devices can deviate significantly from systems employing salts and solvents more common in energy storage devices. Here, cations do not contribute to the doping/dedoping process, but simply participate through passive electrolyte swelling of the pg2T-TT film, the miscibility of which depends on the film's charged state.