The individual pair distribution functions between the component particles of the system help us deconvolute these relationships across the spread of solvent composition. From Fig. and S4 the first and second peaks of Fig. can be correlated to the primary aggregation of ionomer and carbon respectively. The relative intensities of the peaks seemingly attest to the ionomer particles exhibiting almost twice the aggregation probability. However, upon comparison with Fig. , it becomes clear that the initial peak in the system RDF arises from the contributions of ionomerionomer and ionomercarbon interactions. While the water content in the ink significantly affects ionomer aggregation, and carbon aggregation, there is no observable change in the ionomercarbon primary peak (Fig. ). This reiterates the fact that solvent composition does not alter ionomer adsorption onto carbon supports, but rather alters relative ionomerionomer and carboncarbon interactions. Fig. also exhibits twin peaks at 45 and 55 nm with high water contents, which collapses into an individual peak at 50 nm in IPA rich solvents.