Ionic Liquids Electrolytes for High Performance Sodium Batteries—Chemistry, Composition, and Interfaces

ABSTRACT Novel energy storage and energy generation technologies have been extensively supported by taking advantage of the unique properties of ionic liquids (ILs). In particular, the low volatility, high ionic conductivity, and large chemical and electrochemical stability of some ionic liquid chemistries have been key in the development of high‐performance electrolytes for electrochemical devices including sodium batteries. Recently, exploration has turned to modifications in the ionic liquid cation chemistry, as well as the sodium salt concentration, demonstrating significant influence on the anode cycling performance (both metal sodium and hard carbon), while the initial cycling protocols also have a…