Gao, Xinpei; Wu, Fanglin; Mariani, Alessandro; Passerini, Stefano published the artcile< Concentrated Ionic-Liquid-Based Electrolytes for High-Voltage Lithium Batteries with Improved Performance at Room Temperature>, Reference of 6482-24-2, the main research area is concentration ionic liquid electrolyte lithium battery room temperature viscosity; Li-rich cathode; asymmetric anions; ether-functionalized cations; high concentrated electrolytes; ionic liquids.
Ionic liquids (ILs) have been widely explored as alternative electrolytes to combat the safety issues associated with conventional organic electrolytes. However, hindered by their relatively high viscosity, the electrochem. performances of IL-based cells are generally assessed at medium-to-high temperature and limited cycling rate. A suitable combination of alkoxy-functionalized cations with asym. imide anions can effectively lower the lattice energy and improve the fluidity of the IL material. The Li/Li1.2Ni0.2Mn0.6O2 cell employing N-N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium (fluorosulfonyl)(trifluoromethanesulfonyl)imide (DEMEFTFSI)-based electrolyte delivered an initial capacity of 153 mAh g-1 within the voltage range of 2.5-4.6 V, with a capacity retention of 65.5 % after 500 cycles and stable coulombic efficiencies exceeding 99.5 %. Moreover, preliminary battery tests demonstrated that the drawbacks in terms of rate capability could be improved by using Li-concentrated IL-based electrolytes. The improved room-temperature rate performance of these electrolytes was likely owing to the formation of Li+-containing aggregate species, changing the concentration-dependent Li-ion transport mechanism.
ChemSusChem published new progress about Activation energy. 6482-24-2 belongs to class ethers-buliding-blocks, and the molecular formula is C3H7BrO, Reference of 6482-24-2.
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem