Enhanced Capacitive Deionization of Graphene Nanoplatelet/Activated Carbon Composite Electrode

摘要

Electrochemical ion adsorption removal, i.e. capacitive deionization (CDI) with low-energy consumption and no secondary waste is emerging as an innovative desalination technology. In this work, we report the development of mesoporous/microporous carbon electrode composite using the different ratio of mesoporous graphene nanoplatelet to amorphous activated carbon for fast ion infiltration with high electrosorption capacity in CDI process. We found that the GNPAC 1:1 composite electrode shows highest desalination efficiency, attributed to better adsorption kinetics of graphene nanoplatelet compared with the electrode exploiting only activated carbon.