Quaternary Ammonium Room-Temperature Ionic Liquid Including an Oxygen Atom in Side Chain/Lithium Salt Binary Electrolytes:  Ionic Conductivity and1H,7Li, and19F NMR Studies on Diffusion Coefficients and Local Motions

2008 ◽  
Vol 112 (4) ◽  
pp. 1189-1197 ◽  
Author(s):  
Kikuko Hayamizu ◽  
Seiji Tsuzuki ◽  
Shiro Seki ◽  
Yasutaka Ohno ◽  
Hajime Miyashiro ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Conductivity ◽  
Oxygen Atom ◽  
Quaternary Ammonium ◽  
Diffusion Coefficients ◽  
Room Temperature ◽  
Lithium Salt ◽  
Room Temperature Ionic Liquid ◽  
Side Chain ◽  
Nmr Studies

Quaternary Ammonium Room-Temperature Ionic Liquid/Lithium Salt Binary Electrolytes: Electrochemical Study

2008 ◽  
Vol 155 (6) ◽  
pp. A421 ◽  
Author(s):  
Shiro Seki ◽  
Yasutaka Ohno ◽  
Hajime Miyashiro ◽  
Yo Kobayashi ◽  
Akira Usami ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Quaternary Ammonium ◽  
Room Temperature ◽  
Lithium Salt ◽  
Room Temperature Ionic Liquid ◽  
Electrochemical Study ◽  
Liquid Lithium

scholarly journals Ionic Liquid Electrolytes for Safer and More Reliable Sodium Battery Systems

2020 ◽  
Vol 10 (18) ◽  
pp. 6323 ◽  
Author(s):  
Mariangela Bellusci ◽  
Elisabetta Simonetti ◽  
Massimo De Francesco ◽  
Giovanni Battista Appetecchi
Keyword(s):  
Thermal Stability ◽  
Ionic Liquid ◽  
Ionic Conductivity ◽  
Low Temperature ◽  
Room Temperature ◽  
Side Chain ◽  
Electrolyte Mixtures ◽  
Sodium Battery ◽  
Sodium Batteries ◽  
Battery Systems

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.

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