In Situ Attenuated Total Reflection Fourier Transform Infrared Spectroscopy Studies of the Polyethylene Oxide/LiClO4-Metallic Lithium Interface

Toshihiro Ichino; Boris D. Cahan; Daniel Alberto Scherson

doi:10.1149/1.2085448

In Situ Attenuated Total Reflection Fourier Transform Infrared Spectroscopy Studies of the Polyethylene Oxide/LiClO⁴-Metallic Lithium Interface

Toshihiro Ichino, Boris D. Cahan, Daniel Alberto Scherson

Research output: Contribution to journal › Article

23 Citations (Scopus)

Abstract

The reactivity of polyethylene oxide/LiCI0⁴ solid polymer electrolyte with metallic lithium has been investigated using attenuated total reflection Fourier transform infrared spectroscopy as an in situ probe of the vibrational properties of the interface. The results obtained have indicated that metallic lithium electrodeposited in situ reacts with PEO, leading to an irreversible cleavage of the ether functionality to generate the corresponding alkoxide as a product. This was evidenced by the appearance of a well-defined (ether-related) peak at 1110 cm^-1, as well as a rather broad and not as well-defined peak of opposite polarity at 1200 cm^-1. Also found in the spectra was a feature at 1090 cm^-1 ascribed to perchlorate ions which migrate into and out of the near-surface region to preserve electroneutrality.

Original language	English
Pages (from-to)	L59-L61
Journal	Journal of the Electrochemical Society
Volume	138
Issue number	11
DOIs	https://doi.org/10.1149/1.2085448
Publication status	Published - 1991 Jan 1
Externally published	Yes

ASJC Scopus subject areas

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

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Ichino, T., Cahan, B. D., & Scherson, D. A. (1991). In Situ Attenuated Total Reflection Fourier Transform Infrared Spectroscopy Studies of the Polyethylene Oxide/LiClO⁴-Metallic Lithium Interface. Journal of the Electrochemical Society, 138(11), L59-L61. https://doi.org/10.1149/1.2085448

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abstract = "The reactivity of polyethylene oxide/LiCI04 solid polymer electrolyte with metallic lithium has been investigated using attenuated total reflection Fourier transform infrared spectroscopy as an in situ probe of the vibrational properties of the interface. The results obtained have indicated that metallic lithium electrodeposited in situ reacts with PEO, leading to an irreversible cleavage of the ether functionality to generate the corresponding alkoxide as a product. This was evidenced by the appearance of a well-defined (ether-related) peak at 1110 cm-1, as well as a rather broad and not as well-defined peak of opposite polarity at 1200 cm-1. Also found in the spectra was a feature at 1090 cm-1 ascribed to perchlorate ions which migrate into and out of the near-surface region to preserve electroneutrality.",

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