Yuan Zhang1,Danzhen Zhang1,Yury Gogotsi1
A.J. Drexel Nanomaterials Institute1
Yuan Zhang1,Danzhen Zhang1,Yury Gogotsi1
A.J. Drexel Nanomaterials Institute1
Owing to an expanding economy and growing population, there is increasing consumer demand for freshwater. Electrochemical water desalination technologies such as capacitive deionization (CDI) can achieve energy-efficient water desalination. MXene is a cation-selective material that can intrinsically suppress the ion-swapping effect in the desalination process. However, to explore MXene application in electrochemical water treatment, a deeper understanding of the charge transfer mechanism is required. In this work, the ion transport in between MXene layers under in-situ-UV-vis spectroscopy has been monitored. Compared with unconstrained spray-coated Ti<sub>3</sub>C<sub>2</sub>T<i><sub>x</sub></i> MXene films, physically confined MXene with fixed interlayer spacing has shown an unextraordinary ability to suppress redox reactions.