Issue 62, 2017

Quantification of ionic organo(fluoro)phosphates in decomposed lithium battery electrolytes

Abstract

A method for the separation, identification and quantification of the ionic decomposition products of LiPF6 based organic electrolytes was developed. It employed the simultaneous coupling of two-dimensional ion chromatography (2D IC) with electrospray-ionization mass spectrometry (ESI-MS) and with inductively coupled plasma-mass spectrometry (ICP-MS). The electrolyte under investigation was a commercially available electrolyte by BASF, consisting of 1 mol L−1 LiPF6 in a mixture of one linear and one cyclic organic carbonate (50 : 50 wt%). The quantification was based on the use of a structurally similar compound as calibration standard for the ICP-MS measurement, while the identification was carried out with ESI-MS. Several organo(fluoro)phosphate species were successfully separated and quantified. Since these species show a high structural similarity to the warfare agent sarin, their investigation is of special interest with regard to their potential toxicity. Additionally, a quantification study of an electrolyte extracted from a cycled lithium metal cell was carried out.

Graphical abstract: Quantification of ionic organo(fluoro)phosphates in decomposed lithium battery electrolytes

Article information

Article type
Paper
Submitted
07 Jul 2017
Accepted
05 Aug 2017
First published
10 Aug 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 39314-39324

Quantification of ionic organo(fluoro)phosphates in decomposed lithium battery electrolytes

J. Menzel, H. Schultz, V. Kraft, J. P. Badillo, M. Winter and S. Nowak, RSC Adv., 2017, 7, 39314 DOI: 10.1039/C7RA07486G

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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