Abstract
The authors acknowledge the UK’s Engineering and Physical Sciences Research Council (EPSRC) under Grant EP/L01548X/1 for funding R.M.’s doctoral studies through the University of Manchester’s Graphene NOWNANO CDT account. The research reported in this publication was supported by funding from KAUST.
Highlights
The availability of potable water is an ever-expanding global challenge, with factors such as population growth and climate change driving the depletion of freshwater sources to unprecedented levels.[1]
Such operational limitations are detrimental to the widespread industrial realization of (M)Capacitive deionization (CDI); while less energy input would be required, compared to processes such as RO and distillation, these savings would be offset by the need for replacement materials and regular system maintenance
This study showed that anion-exchange membrane (AEM) with enhanced dimensional and electrochemical properties could be fabricated via innovative methods, which translated into improved membrane capacitive deionization (MCDI) performance
Summary
The availability of potable water is an ever-expanding global challenge, with factors such as population growth and climate change driving the depletion of freshwater sources to unprecedented levels.[1]. While it is accepted that certain faradaic processes can be beneficial to MCDI performance (e.g., faradaic and intercalation ion storage), other processes such as anodic oxidation and oxygen reduction reactions can result in water quality fluctuations and electrical energy losses.[49] In particular, anodic oxidation of the carbon electrode itself can lead to a breakdown of the internal pore structure and rapid deterioration of desalination performance Such operational limitations are detrimental to the widespread industrial realization of (M)CDI; while less energy input would be required, compared to processes such as RO and distillation, these savings would be offset by the need for replacement materials and regular system maintenance. The need for robust, high-performance, and affordable ion-exchange materials is crucial to ensure the longevity of electrodes for any industrial applications of MCDI
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