In a separate experiment, an equal concentration of DPPHBArF was added to the TFT electrolyte, and a non-zero limiting current was observed negative of 0 V. This limiting current is proportional to the bulk concentration of DPPHBArF, and the difference in the magnitude of positive and negative limiting current is due to the lower diffusion coefficient of DPPH + in TFT. The point where the steady state voltammogram intersects the potential axis was identified as the equilibrium potential Δ 𝑜𝑜 𝑤𝑤 𝜙𝜙 𝑑𝑑𝑠𝑠 for that experiment. We found that the equilibrium potential read by the potentiostat is different in every experiment due to the variability of the silver pseudo-reference electrode potential in the TFT electrolyte. Importantly, referencing all other potentials to a particular cell's Δ 𝑜𝑜 𝑤𝑤 𝜙𝜙 𝑑𝑑𝑠𝑠 allows us to simply analyze current as a function of ion-transfer overpotential rather than an arbitrary pseudo-reference potential.