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

L. Zhao, E. Chénard, Capraz, Nancy R Sottos, Scott 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

Fingerprint

manganese ions
Manganese
Ultraviolet spectroscopy
Electrolytes
electrolytes
Ions
ion concentration
electric batteries
dissolving
spectroscopy
Cyclic voltammetry
lithium oxides
ions
Dissolution
chelation
probes
manganese oxides
Manganese oxide
manganese
Carbonates

ASJC Scopus subject areas

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

Cite this

Direct Detection of Manganese Ions in Organic Electrolyte by UV-vis Spectroscopy. / Zhao, L.; Chénard, E.; Capraz, ; Sottos, Nancy R; White, Scott R.

In: Journal of the Electrochemical Society, Vol. 165, No. 2, 01.01.2018, p. A345-A348.

Research output: Contribution to journalArticle

Zhao, L. ; Chénard, E. ; Capraz, ; Sottos, Nancy R ; White, Scott R. / Direct Detection of Manganese Ions in Organic Electrolyte by UV-vis Spectroscopy. In: Journal of the Electrochemical Society. 2018 ; Vol. 165, No. 2. pp. A345-A348.
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