The dependence of the desalination performance in capacitive deionization processes on the electrodes PZC

Eran Avraham, Malachi Noked, Izaak Cohen, Abraham Soffer, Doron Aurbach

Research output: Contribution to journalArticlepeer-review

75 Scopus citations

Abstract

Capacitive deionization (CDI) is a method in which charged species can be electro-adsorbed by imposed electrostatic forces formed by polarization of high surface carbon electrode. An important parameter that may have pronounced effect on the desalination performance in CDI processes is the potential of zero charge (PZC) of the carbon electrodes in the cell. In this work we examined the influence of the relation between the electrodes' PZC and the electrodes' potential (Vs. Ref. electrode) when the cell is being short-circuited (E 0) at dynamic steady state, on the salt removal effectiveness. A flow through CDI cell, which solutions concentration could be continuously measured in the course of the periodic charge-discharge processes was employed for this purpose. The paper outlines guidelines for CDI cells optimization by choosing appropriate carbon electrodes.

Original languageEnglish
Pages (from-to)P168-P173
JournalJournal of the Electrochemical Society
Volume158
Issue number12
DOIs
StatePublished - 2011

Fingerprint

Dive into the research topics of 'The dependence of the desalination performance in capacitive deionization processes on the electrodes PZC'. Together they form a unique fingerprint.

Cite this