Capacitive deionization (CDI) is an environmentally-friendly, cost-effective and energy efficient technology that has been developed for removal of charged ions from water. Here we report the performance of graphene with low specific surface area coated with MnO2 by potentiostatic anodic deposition technique. The morphology, structure, porous and electrochemical properties was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and electrochemical potentiostat analyser. The specific capacitance of graphene electrode was obviously enhanced after coating with MnO2. Capacitive deionization experiments were performed in a batch mode, using a classic three-electrode electrochemical cell. High conductivity of graphene and high surface adsorption capability of MnO2 offer the potential of MnO2/graphene composite to be used as electrodes for capacitive deionization.

MnO<sub>2</sub>/graphene composite electrode for capacitive deionization

248th National Meeting (2014)

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MnO2/graphene composite electrode for capacitive deionization

MnO₂/graphene composite electrode for capacitive deionization