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Vorträge und Posterpräsentationen (ohne Tagungsband-Eintrag):

C. Kanakaki, E. Rosenberg, A. Amon, I. Gocheva, A. Trifonova:
"Using Chromatographic Methods for the Assessment of Safety Hazards Arising from Lithium Ion Batteries";
Vortrag: 18th International Symposium on Advances in Extraction Technologies & 22nd International Symposium on Separation Sciences (18th ExTech & 22nd ISSS 2016), Torún, Poland; 03.07.2016 - 06.07.2016.



Kurzfassung englisch:
Lithium ion batteries (LIBs) have been introduced for many stationary and mobile applications about two decades ago. With their increasing use and factual omnipresence, safety concerns have surfaced, particularly for the larger aggregates used in electrotransportation (notably for electric and hybrid vehicles [1]). This has prompted detailed studies regarding their safety under extreme conditions, with particular emphasis on the stability of their electrolytes [2].
This electrolyte, consisting of a mixture of organic carbonates with the addition of a suitable lithium salt, degrades already under conditions of normal use, but even more so under extreme conditions of temperature or overcharging/overdischarging. Volatile degradation products are formed that represent both a fire or explosion hazard, and also may be toxicologically relevant [2].
We report here on the characterization of the organic electrolyte and its volatile degradation products under conditions of normal use as well as of thermal exposure and electrochemical stress. The great variety of reaction products requires various GC/MS and HPLC/MS techniques to be used for the characterization of the volatile and less volatile degradation products and the electrolyte, respectively. Both off-line and on-line approaches for the sampling of the volatile emissions have been investigated and will be presented, the latter also allowing the dynamic behavior of the emissions to be studied. The use of different experimental set-ups eventually allows assessing the hazard arising from the use of LIBs [3-5].

References
1. J.B. Goodenough, K.-S. Park, J. Am. Chem. Soc. 135 (2013) 1167-1176.
2. A. Hammami, N. Raymond, M. Armand, Nature 424 (7 August 2003) 635-636.
3. G. Gachot, P. Ribière, D. Mathiron, et al., Anal. Chem. 83 (2011) 478-485.
4. A. Amon, Master Thesis, Univ. of Vienna (2014).
5. C. Kanakaki, PhD Thesis, Vienna Univ. of Technology (in preparation, 2017).

Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.