Electrochemical filters

T. A. Ramanarayanan, S. Ling, J. D. Mumford, A. Ozekcin, V. K. Pareek

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


In so much as most solid electrolytes and mixed ion/electron conductors are generally specific to the migration of one ion, solid state electrochemical cells have applications as electrochemical filters. In the present paper several examples are considered from the author's research where filtering as an electrochemical phenomenon occurs. Oxide ion conducting electron/ion conductors are taken as a specific example, and ways to optimize oxygen transport through such materials are discussed. Examples are given from corrosion research where selective ion migration through oxide films formed on alloy surfaces can lead to alloy enrichment in the sub-surface region. Finally, an electrochemical cell is described where selective filtering of cations from a nonstoichiometric sulphide electrode via a solid electrolyte can release anions to enhance specific reactions.

Original languageEnglish (US)
Pages (from-to)259-265
Number of pages7
JournalSolid State Ionics
Issue number1-4
StatePublished - Feb 1 1997
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


  • Corrosion
  • Grain boundary
  • Mixed conduction
  • Reaction enhancement
  • Transference number


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