Direct Detection of Manganese Ions in Organic Electrolyte by UV-vis Spectroscopy

L. Zhao, E. Chénard, Capraz, N. R. Sottos, S. R. White

Research output: Contribution to journalArticle

Abstract

Lithium manganese oxide cathodes used in Li-ion batteries suffer from manganese dissolution and capacity fade. We present a new technique for directly measuring the manganese ion (Mn2+) concentration in a typical Li-ion carbonate electrolyte using 4-(2-pyridylazo) resorcinol (PAR) as a UV-vis probe. Chelation between PAR and Mn2+ ion induces a characteristic absorption peak where the peak intensity corresponds to Mn2+ ion concentration in the electrolyte. Electrochemical stability of the probe is verified by performing potential hold and cyclic voltammetry. The in situ characterization of Mn dissolution in a customized battery cell is performed during cyclic voltammetry.

Original languageEnglish (US)
Pages (from-to)A345-A348
JournalJournal of the Electrochemical Society
Volume165
Issue number2
DOIs
StatePublished - Jan 1 2018

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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