Kerr gated Raman spectroscopy of LiPF6 salt and LiPF6-based organic carbonate electrolyte for Li-ion batteries

Kerr gated Raman spectroscopy of LiPF6 salt and LiPF6-based organic carbonate electrolyte for Li-ion batteries

TitleKerr gated Raman spectroscopy of LiPF6 salt and LiPF6-based organic carbonate electrolyte for Li-ion batteries
Publication TypeJournal Article
Year of Publication2019
AuthorsLaura Cabo-Fernandez, Alex R Neale, Filipe Braga, Igor V Sazanovich, Robert Kostecki, Laurence J Hardwick
JournalPhysical Chemistry Chemical Physics
Volume21
Issue43
Pagination23833 - 23842
Date Published09/2019
ISSN1463-9076
Abstract

Fluorescent species are formed during cycling of lithium ion batteries as a result of electrolyte decomposition due to the instability of the non-aqueous electrolytes and side reactions that occur at the electrode surface. The increase in the background fluorescence due to the presence of these components makes it harder to analyse data due to the spectroscopic overlap of Raman scattering and fluorescence. Herein, Kerr gated Raman spectroscopy was shown to be an effective technique for the isolation of the scattering effect from the fluorescence enabling the collection of the Raman spectra of LiPF6 salt and LiPF6-based organic carbonate electrolyte, without the interference of the fluorescence component. Kerr gated Raman was able to identify POF3 on the LiPF6 particle surface, after the addition of trace water.

DOI10.1039/C9CP02430A
Short TitlePhys. Chem. Chem. Phys.
Refereed DesignationRefereed