ABSTRACT
Jung and coworkers in 2012 demonstrated that only when a stable electrolyte is chosen can an appropriately designed Li-air cell reach application-expected operational parameters, including cycle number, capacity, and charge/discharge rates. An ideal electrolyte for a Li-air battery should exhibit numerous and often contradictive features. Li-air batteries are considered as a promising alternative to ion cells due to their high energy density. However, using them is still challenging. In the past decade, many strategies have been explored, promoting the development of metal-air batteries. A majority of the efforts concerning nitriles are focused on acetonitrile-based electrolytes, despite their relatively high volatility. Properties of other nitriles are much less known. Room-temperature ionic liquids offer some advantages over typical electrolytes, such as thermal stability and a wide electrochemical stability window. The ceramic-based artificial solvent-electrolyte interphase protects lithium metal from atmospheric contamination and with its strong barrier properties is essential for both the all-solid and hybrid systems.
