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Issue 62, 2017
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Quantification of ionic organo(fluoro)phosphates in decomposed lithium battery electrolytes

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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

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Publication details

The article was received on 07 Jul 2017, accepted on 05 Aug 2017 and first published on 10 Aug 2017


Article type: Paper
DOI: 10.1039/C7RA07486G
Citation: RSC Adv., 2017,7, 39314-39324
  • Open access: Creative Commons BY license
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    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

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