Flow-Through Porous Electrodes

Richard Alkire, Brian Gracon

Research output: Contribution to journalArticlepeer-review

Abstract

Experimental limiting current data obtained on two systems of known configuration clarify conditions under which internal mass transfer restrictions control the current distribution and collection efficiency of flow-through porous electrodes. At sufficiently low flow rates, the limiting current is controlled by the rate of reactant supply to the electrode. A theoretical model is developed which includes mass transfer, ohmic, kinetic, and geometric parameters. The model succeeds in predicting limiting current behavior over a wide range of operating conditions. A simple algebraic criterion is suggested for estimating the limiting current and collection effectiveness of flow-through porous electrodes.

Original languageEnglish (US)
Pages (from-to)1594-1601
Number of pages8
JournalJournal of the Electrochemical Society
Volume122
Issue number12
DOIs
StatePublished - Dec 1975

Keywords

  • current distribution
  • electrochemical engineering
  • mass transfer
  • mathematical model
  • reactor design

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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