Investigation of thermal aging and hydrolysis mechanisms in commercial lithium ion battery electrolyte
| Autor: | Martin Winter, Stefano Passerini, Lydia Terborg, Franziska Blaske, Sascha Weber, Sascha Nowak, Uwe Karst |
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| Rok vydání: | 2013 |
| Předmět: |
Battery (electricity)
Aqueous solution Renewable Energy Sustainability and the Environment Chemistry Electrospray ionization Ion chromatography Analytical chemistry Energy Engineering and Power Technology Electrolyte Lithium-ion battery Hydrolysis Electrical and Electronic Engineering Physical and Theoretical Chemistry Inductively coupled plasma |
| Zdroj: | Journal of Power Sources. 242:832-837 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2013.05.125 |
| Popis: | Novel methods based on hyphenated analytical techniques for the analysis of LiPF 6 commercially available battery electrolytes are presented. PF 6 − and the formed main decomposition products F − , PO 2 F 2 − and HPO 3 F − were separated by ion chromatography (IC) and detected by electrospray ionization mass spectrometry (ESI-MS). Inductively coupled plasma optical emission spectroscopy (ICP-OES) on the phosphorous trace supported the results obtained by ESI-MS. Samples, which were stored at room temperature and at 5 °C, were analyzed several times over a period of two weeks to demonstrate the progress of the hydrolysis of LiPF 6 in aqueous solution and commercially available electrolyte (EC/DEC (3:7 w/w) 1 M LiPF 6 ). Subsequently, the same commercially available electrolyte system was analyzed to prove the usefulness of the proposed method to investigate the influence of the thermal aging in lithium-ion batteries. |
| Databáze: | OpenAIRE |
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