Redox reaction in 1-ethyl-3-methylimidazolium-iron chlorides molten salt system for battery application

Yasushi Katayama, Isamu Konishiike, Takashi Miura, Tomiya Kishi

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

The redox reaction between divalent and trivalent iron species in binary and ternary molten salt systems consisting of 1-ethyl-3-methylimidazolium chloride (EMICl) with iron chlorides, FeCl2 and FeCl3, was investigated as a candidate of the half-cell reactions of novel rechargeable redox batteries based on low temperature molten salt systems. A reversible one-electron redox reaction between divalent and trivalent iron species was observed on a platinum electrode in EMICl-FeCl2-FeCl3 system at 130°C. The voltammetric data indicated that divalent and trivalent iron species were FeCl3- and FeCl4- complex anions, respectively. Combined with another proper redox couple, this molten salt system can be utilized in a rechargeable redox battery on account of its low melting temperature and reversible redox reaction.

Original languageEnglish
Pages (from-to)327-332
Number of pages6
JournalJournal of Power Sources
Volume109
Issue number2
DOIs
Publication statusPublished - 2002 Jul 1

Keywords

  • 1-Ethyl-3-methylimidazolium
  • Iron chloride
  • Molten salt
  • Redox battery

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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