With the majority of research on porous carbon electrodes over the past decades dedicated to
capacitive energy storage devices, capacitive deionization had been somewhat overlooked. Though
the application of porous carbon electrodes for water desalination had been documented since the
1960s when it was called ‘‘electrochemical demineralization’’ or ‘‘electrosorb process for desalting
water’’
[3–7]
, only recently the academic interest in this technology increased exponentially, and com-
panies have begun marketing commercial CDI technologies