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

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

doi:10.1149/2.1111802jes

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 journal › Article › peer-review

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 language	English (US)
Pages (from-to)	A345-A348
Journal	Journal of the Electrochemical Society
Volume	165
Issue number	2
DOIs	https://doi.org/10.1149/2.1111802jes
State	Published - 2018

ASJC Scopus subject areas

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

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10.1149/2.1111802jes

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title = "Direct Detection of Manganese Ions in Organic Electrolyte by UV-vis Spectroscopy",

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.",

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note = "Publisher Copyright: {\textcopyright} 2018 The Electrochemical Society.",

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AU - Zhao, L.

AU - Chénard, E.

AU - Capraz,

AU - Sottos, N. R.

AU - White, S. R.

PY - 2018

Y1 - 2018

N2 - 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.

AB - 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.

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

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