Capacitive deionization concept based on suspension electrodes without ion exchange membranes

Kelsey B. Hatzell, Etsuro Iwama, Anais Ferris, Barbara Daffos, Koki Urita, Théodore Tzedakis, Fabien Chauvet, Pierre Louis Taberna, Yury Gogotsi, Patrice Simon

Research output: Contribution to journalArticlepeer-review

107 Scopus citations


A new type of capacitive deionization (CDI) system, based on capacitive suspension electrodes (CSEs), was developed for the purpose of desalting brackish and seawater through the use of flowable carbon suspensions. CSEs derived from activated carbon and acetylene black demonstrated a specific capacitance of 92 F g- 1 in a static mode in a 0.6 M NaCl solution. The novel system introduced here is a proof of concept that capacitive suspension electrodes can be envisioned to desalt water without the aid of ion exchange membranes (IEMs).

Original languageEnglish (US)
Pages (from-to)18-21
Number of pages4
JournalElectrochemistry Communications
StatePublished - Jun 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electrochemistry


  • Capacitive deionization
  • Capacitive suspension electrodes
  • Electrochemical flow capacitor
  • Flowable electrodes
  • Water desalination


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