The escalating levels of anthropogenic carbon dioxide (CO2) in the atmosphere has caused the earth's temperature to rise by approximately 1.2 o C during the last five decades. Currently, human activities release about 40 billion tons of CO2 every year. According to the intergovernmental panel on climate change (IPPC), the CO2 emissions would need to be reduced to 20 billion tons per year to limit warming to 1.5 o C compared to the preindustrial levels. Industrial point sources such as coal, natural gas, and cement industries which contain CO2 in the range of 4-20 % account for more than half of the anthropogenic CO2 emissions. Effective technologies that can remove CO2 both from industrial sources and directly from the atmosphere are high in demand because the transition to renewable energy alone may be too slow in order to meet climate goals. The general requirements for an efficient carbon capture technology include high sorption capacity, low energy consumption, high selectivity for CO2 over other gases in the mixture, facile reversibility of adsorption, fast sorption kinetics, and the use of robust, long-living, and inexpensive materials. To date, the most widely used technology for CO2 capture is amine scrubbing, which requires the use of corrosive, volatile, and toxic solvents. Alternative technologies for carbon capture include pressure swing adsorption (PSA) and temperature swing adsorption (TSA) on porous sorbents such as zeolites and porous carbons. They tend to have relatively low CO2/N2 selectivity, and frequently show high sensitivity to moisture in the gas mixture. Solid-sorbents with grafted amines have also been reported. They exhibit high selectivity for CO2, but have high thermal energy requirements for regeneration, and limited life-time due to the oxygen-sensitivity of amines. Electrochemical CO2 capture techniques have gained considerable attention in recent years. They avoid the energy penalty associated with thermal and pressure cycling. Among them, supercapacitive swing adsorption (SSA) is a promising emerging technology capable of reversibly capturing and releasing CO2 by charging and discharging supercapacitor electrodes. Supercapacitors are capable of electrostatically storing a large number of charges inside the pores of high surface area electrodes in an electrical double layer. SSA is significantly simpler than other electrochemical sorption techniques, only requiring inexpensive, robust, and environmentally benign porous activated carbons and aqueous electrolytes (e.g. NaCl, NaHCO3). Supercapacitors allow for fast charge-discharge rates, have a high round-trip energy efficiency, and a long lifetime (> 10 5 cycles). This is an advantage over electrochemical techniques that rely on the use of redox-active sorbents or solvents (e.g. quinones, redox-active amines). Redox-techniques tend to have a more limited cycle-life, and frequently involve high cost materials such as carbon nanotube-based electrodes, redox-active specialty polymers, copper, special amines, and ionic liquids. Quinones and amines tend to be oxygen-sensitive. Electrochemical methods based on pH-swings, e.g. membrane-capacitive deionization (MCDI), electrolysis, and bipolar membrane electrodialysis (BPMED), have also been reported. However, MCDI require expensive materials such as cation and anion-exchange membranes. Electrolysis and BPMED capture methods also require cation and anion exchange membranes and have high energy consumption (>300 kJ.mol ). In 2014, our group first demonstrated the concept of SSA by separating CO2 from 15 % CO2/85 % N2 gas mixture, with extremely high selectivity of CO2 over N2. Subsequent work focused on the development of SSA modules that can separate CO2 from a gas-stream in batch-mode, and the collection of fundamental adsorptive and energetic performance data as a function of the charging protocols, electrolyte concentration, and electrolyte composition. The highest adsorption capacity achieved for SSA modules with radial gas flow was around 70 mmol.Kg -1 at an energy consumption of about 100 kJ.mol -1 . Recently, Forse et al reported that the sorption capacity of SSA can be increased to 112 mmol.kg by cycling the electrodes between -1 V and +1 V instead of -1 V and 0 V but at a very high energy penalty (751 kJ.mol ). Further improvement in adsorption capacity without compromising on the energy consumption is highly desirable. SSA is believed to function according to three mechanisms. One, the ionic liquid-solid mechanism, assumes that CO2 hydrolyses in the electrolyte to form H + , HCO3 -, and CO3 anions that can adsorb to the double-layers of the negative (H + ) and positive (HCO3 -and CO3 2-) electrodes, respectively. Due to their high charge-density, small radius, and high mobility, protons are preferentially adsorbed to the negative electrode, regardless of the type of ions in the electrolyte. The proton adsorption leads to an increase of the pH in the bulk electrolyte which allows for more CO2 dissolution (and subsequent hydrolysis) into the bulk electrolyte, until the chemical equilibrium is re-established. The two other mechanisms assume the adsorption of molecular CO2 to the double-layer due to a solubility difference of CO2 in the bulk solution and the double-layer (molecular liquid-solid mechanism), and the physisorption of molecular CO2 to hydrophobic pores that are not infiltrated by the electrolyte (molecular gas-solid mechanism). The ionic liquid-solid mechanism of SSA suggests that increasing the specific capacitance of the electrodes could lead to enhanced adsorption capacity, and that there may be a relationship between the sorption capacity for CO2 and the specific capacitance of the electrodes. The previously investigated BPL carbon only shows a moderate specific capacitance of ~80 F.g -1 , indicating substantial room for improvement through the use of carbons with higher specific capacitances.