Abstract
This chapter reports on experiments aimed at investigating the capability of pressurized carbon dioxide to extract the electrolyte from commercial available LIBs on a laboratory scale. Two different phase conditions of carbon dioxide (subcritical and supercritical) and two different extraction (static and dynamic) have been considered and analyzed for their strengths and weaknesses. Furthermore, the addition of co-solvents is examined with regard to their contribution to higher recovery rates. After reporting the optimized extraction method, the extracted electrolyte was analyzed by gas and ionic chromatography methods for potential de-composition products and their relative amount.
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References
Grützke M, Kraft V, Weber W, Wendt C, Friesen A, Klamor S, Winter M, Nowak S (2014) Supercritical carbon dioxide extraction of lithium-ion battery electrolytes. J Supercrit Fluids 94(1):216–222. https://doi.org/10.1016/j.supflu.2014.07.014
Grützke M, Monnighoff X, Horsthemke F, Kraft V, Winter M, Nowak S (2015) Extraction of lithium-ion battery electrolytes with liquid and supercritical carbon dioxide and additional solvents. RSC Adv 5(54):43209–43217. https://doi.org/10.1039/c5ra04451k
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Rothermel, S., Grützke, M., Mönnighoff, X., Winter, M., Nowak, S. (2018). Electrolyte Extraction—Sub and Supercritical CO2 . In: Kwade, A., Diekmann, J. (eds) Recycling of Lithium-Ion Batteries. Sustainable Production, Life Cycle Engineering and Management. Springer, Cham. https://doi.org/10.1007/978-3-319-70572-9_10
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DOI: https://doi.org/10.1007/978-3-319-70572-9_10
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