Herein, we investigate biomass-(garlic skin, garlic roots, garlic powder), coal-, coke-, and carbide-derived activated carbons as electrode materials for SSA. Garlic roots, skin, and powder were selected because of the very high specific capacitance of activated carbons reported for garlic skin-derived carbons. For comparison reasons, we also investigated commercially available activated carbons from different non-biomass sources, namely Y carbon (derived from silicon carbide), and Supersorb carbon (derived from coke) . These materials exhibit varying porosity, pore size distributions, and surface functionalities which allows for studying the influence of these variables on the SSA performance. Our previously used BPL carbon (derived from bituminous coal) was used as benchmark material. Two different electrode sizes (4 cm 2 and 49 cm 2 ) were used to study the dependence of electrode size on the performance of SSA.