UW-Madison researchers have developed an electrochemical method and associated system for the adsorption/desorption of CO2. The system includes a porous inorganic oxide electrode (e.g., TiO2) and a non-aqueous solution comprising a dissolved electrolyte (e.g., tetrabutylammonium hexafluorophosphate (TBAPF6)). In operation, a gaseous input comprising CO2 is introduced whereupon it saturates the electrolyte. A negative voltage is applied to the electrode to generate nucleophilic sites on the TiO2 surface which subsequently adsorbs the CO2 from the electrolyte solution. Once saturated, desorption of the CO2 from the organic oxide electrode was achieved by applied a positive voltage. In their bench scale system, a voltage sweep of –1.7 V to 0.6 V was sufficient to adsorb and desorb the CO2.