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Capacitive deionization (CDI) is one of the attractive environmentally-friendly technologies for desalting applications. It consumes relatively small energy for operation and does not produce any secondary wastes for a re-use. In this work, we have successfully prepared both anion and cation exchange ionomer coating solutions using engineering polymers as the base materials. The functionalized ionomers were coated on porous carbon electrodes and also utilized as a binder for immobilizing the carbon particles to improve the current and removal efficiencies of CDI process. The ionomers exhibited excellent electrochemical properties of both the low electrical resistance and high ion selectivity. As a result, the desalination performances of the CDI were largely improved by employing the ionomers-carbon composite electrodes.(No. 10047796)
