In summary, we report a simple synthesis and preparation procedure to develop high massloading garlic-roots derived activated carbon electrodes with micro-and meso-pores for high voltage supercapacitive swing adsorption of carbon dioxide. The minimum energy consumption of 70 kJ.mol -1 is achieved at an adsorption capacity of 312 mmolkg -1 . The adsorptive performance of SSA can be increased to 524 mmol.kg -1 at an energy consumption of 130 kJ.mol -1 by increasing the potential window to -1.4 V. The electrodes show capacitive behavior up to -1.4 V with stable SSA performance over multiple cycles. These results show that new electrodes development is a potential route to further increase the adsorption capacity, lower the energy consumption, and improve the sorption kinetics of SSA.