期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1354, 期 -, 页码 92-100出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2014.05.066
关键词
IC/ESI-MS; Lithium hexafluorophoshate; Fluorinated organophosphates
资金
- state of North Rhine-Westphalia [w1102ck010a]
- Metrohm
A method based on the coupling of ion chromatography (IC) and electrospray ionization mass spectrometry (ESI-MS) for the separation and determination of thermal decomposition products of LiPF6-based organic electrolytes is presented. The utilized electrolytes, LP30 and LP50, are commercially available and consist of 1 mol/l LiPF6 dissolved in ethylene carbonate/dimethyl carbonate and ethylene carbonate/ethyl methyl carbonate, respectively. For the separation method development three ion chromatographic columns with different capacity and stationary phase were used and compared. Besides the known hydrolysis products of lithium hexafluorophosphate, several new organophosphates were separated and identified with the developed IC-ESI-MS method during aging investigations of the electrolytes. The chemical structures were elucidated with IC-ESI-MS/MS (C) 2014 Elsevier B.V. All rights reserved.
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