The Kinetics of the Magnesium Electrode in Thionyl Chloride Solutions

E. Peled, H. Straze

Research output: Contribution to journalArticlepeer-review

Abstract

The electrochemical behavior of the magnesium electrode in thionyl chloride (TC) solutions was studied. It was found that this electrode is covered by a passivating layer which consists of some insoluble magnesium salt, probably MgCl2. The properties of this layer determine the chemical and electrochemical behavior of the electrode in TC solutions. Magnesium was deposited on a nickel cathode from TC solutions containing Mg(FeCl4)2. Magnesium deposition begins after the nickel cathode is covered by a passivating layer (consisting of reduction products of TC) in which [formula omitted]. It was concluded that the rds for the deposition-dissolution process of the magnesium electrode in TC solutions is not the electron-transfer reaction, but is instead the migration of the Mg2+ ions through a passivating layer which covers the electrode.

Original languageEnglish
Pages (from-to)1030-1035
Number of pages6
JournalJournal of the Electrochemical Society
Volume124
Issue number7
DOIs
StatePublished - Jul 1977

Keywords

  • inorganic battery
  • magnesium electrodeposition
  • passivating layer

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