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Ionic Liquid Electrolytes for Safer and More Reliable Sodium Battery Systems
| Content Provider | MDPI |
|---|---|
| Author | Bellusci, Mariangela Simonetti, Elisabetta Francesco, Massimo De Appetecchi, Giovanni Battista |
| Copyright Year | 2020 |
| Description | Na+-conducting, binary electrolytic mixtures, based on 1-ethyl-3-methyl-imidazolium, trimethyl-butyl-ammonium, and N-alkyl-N-methyl-piperidinium ionic liquid (IL) families, were designed and investigated. The anions were selected among the per(fluoroalkylsulfonyl)imide families. Sodium bis(trifluoromethylsulfonyl)imide, NaTFSI, was selected as the salt. The NaTFSI-IL electrolytes, addressed to safer sodium battery systems, were studied and compared in terms of ionic conductivity and thermal stability as a function of the temperature, the nature of the anion and the cation aliphatic side chain length. Room temperature conductivities of interest for sodium batteries, i.e., largely overcoming 10−4 or 10−3 S cm−1, are displayed. Similar conduction values are exhibited by the EMI-based samples even below −10 °C, making these electrolyte mixtures potentially appealing also for low temperature applications. The NaTFSI-IL electrolytes, with the exception of the FSI-ones, are found to be thermally stable up to 275 °C, depending on the nature of the cation and/or anion, thus extending their applicability above 100 °C and remarkably increasing the reliability and safety of the final device, especially in the case of prolonged overheating. |
| Starting Page | 6323 |
| e-ISSN | 20763417 |
| DOI | 10.3390/app10186323 |
| Journal | Applied Sciences |
| Issue Number | 18 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-09-11 |
| Access Restriction | Open |
| Subject Keyword | Applied Sciences Electrochemistry Sodium Electrolytes Ionic Liquids Sodium Batteries |
| Content Type | Text |
| Resource Type | Article |
