In this work we have developed a new class of quinone-functionalised carbon materials for electrochemically driven CO2 capture. Structural characterization and measurements showed that anthraquinones were successfully grafted to CMK-3 mesoporous carbon using the diazonium radical reaction to yield f-CMK-3. Following quinone functionalisation, clear increases in electrochemical charge storage capacity were obtained due to anthraquinone redox reactions. By incorporating f-CMK-3 in an electrochemical gas cell and applying a cell voltage in the range of -1 to -2 V in the presence of CO2, CO2 adsorption capacities ca. 0.4 mmol g -1 were demonstrated that utilize the Faradaic redox reactions of anthraquinone on the carbon surface. The addition of anthraquinone therefore improves both the carbon capture and energy storage abilities of the solid-state electrode.