High Lithium Transference Number Electrolytes Containing Tetratriflylpropene’s Lithium Salt
| Autor: | Jelena Popovic, Benjamin List, Joachim Maier, Andreas Münchinger, Jan-Patrick Melchior, Denis Höfler |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Inorganic chemistry Diglyme 02 engineering and technology Electrolyte Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 7. Clean energy 0104 chemical sciences Dielectric spectroscopy chemistry.chemical_compound chemistry Ionic conductivity General Materials Science Physical and Theoretical Chemistry 0210 nano-technology Pulsed field gradient Polarization (electrochemistry) Trifluoromethanesulfonate |
| Zdroj: | The Journal of Physical Chemistry Letters |
| Popis: | Electrolytes with a high lithium transference number linked with high ionic conductivity are urgently needed for high power battery operation. In this work, we present newly synthesized lithium tetra(trifluoromethanesulfonyl)propene as a salt-in-glyme-based "salt-in-solvent" electrolyte. We employ impedance spectroscopy in symmetric Li/electrolyte/Li cells and pulsed field gradient nuclear magnetic resonance spectroscopy to investigate the lithium conduction mechanism. We find predominant lithium conductivity with very high lithium transference numbers (∼70% from the polarization experiments) and three times higher ionic conductivity compared to well-known lithium triflate in diglyme electrolyte. This is a consequence of the reduced mobilities of large anions linked with improved ionic dissociation. |
| Databáze: | OpenAIRE |
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