Electrochemical double layer capacitors (EDLCs) are a class of supercapacitor energy storage devices with superior power performances and longer cycle lives than batteries . The most 30 commonly studied and cheapest EDLCs contain carbon electrodes formed from disordered, graphene-like sheets that form a porous network with a distribution of pore sizes . In order to improve the energy densities of these devices closer towards those of batteries, many studies focus on varying the structure of the nanoporous carbon electrodes (4) so as to tune the carbon pore size (as measured by gas sorption). While early studies of titanium carbide-derived carbons (TiC-CDCs) with different pore sizes , as well as studies of activated carbons , reported a maximum capacitance as the carbon pore sizes were decreased towards the size of desolvated electrolyte ions , more recent studies have generated contradictory results. For example, a lack of correlation between capacitance and pore size across a collection of porous carbons with pore sizes ranging from 0.7 to 15 nm in a standard NEt4BF4 in acetonitrile (ACN) electrolyte, including 22 microporous 40 activated carbons from different precursors, TiC-CDCs, and 6 mesoporous carbons was reported .