Electrochemical characterization of electrolytes for lithium-ion batteries based on lithium difluoromono(oxalato)borate |
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| Authors: | Sandra ZugmannDominik Moosbauer Marius AmerellerChristian Schreiner Franz WudyRené Schmitz Raphael SchmitzPhilipp Isken Christian DippelRomek Müller Miriam KunzeAlexandra Lex-Balducci Martin WinterHeiner Jakob Gores |
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| Affiliation: | a Workgroup “Electrochemistry and Electrolytes”, Institute of Physical and Theoretical Chemistry, University of Regensburg, Universtaetsstr. 31, D-93040 Regensburg, Bavaria, Germany
b Institute of Physical Chemistry, Westfälische Wilhelms-University Münster, Corrensstraße 28/30, 48149 Münster, Germany |
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| Abstract: | The salt lithium difluoromono(oxalato)borate (LiDFOB) showed some promising results for lithium-ion-cells. It was synthesized via a new synthetic route that avoids chloride impurities. Here we report the properties of its solutions (solvent blend ethylene carbonate/diethyl carbonate (3:7, mass ratio), including its conductivity, cationic transference number, hydrolysis, Al-current collector corrosion-protection ability and its cycling performance with some electrode materials. Some Al-corrosion studies were also performed with the help of our recently developed computer controlled impedance scanning electrochemical quartz crystal microbalance (EQCM) that proofed to be a useful tool for battery material investigations. |
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| Keywords: | Lithium difluoromono(oxalato)borate (LiDFOB) Hydrolysis Lithium-ion batteries Al corrosion EQCM |
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