Energy-efficient electrochemical CO2 capture from the atmosphere

We discuss our experimental progress toward energyefficient electrochemical CO2 capture from the atmosphere. First we discuss the latest results from an ongoing project that uses a modified-fuel-cell-based approach for CO2 concentration [1]. Using this approach, we have demonstrated CO2 capture from atmospheric concentrations with an energy consumption of less than 400 kJ/mol(CO2). We also discuss progress on a second approach to electrochemical CO2 concentration: a novel pH-controlled, high pressure electrodialysis system that allows energyefficient, high-rate CO2 separation from the atmosphere [2].