An air-stable, aluminium-based ionic liquid electrolyte for energy storage†

High capacity, lightweight multivalent aluminum (Al) is attractive as an energy storage active material. Current Al containing electrolytes are prohibitively air/moisture sensitive and do not cycle under ambient conditions. Here, promising, reversible electrochemical behavior of Al-containing, air-stable ionic liquids is demonstrated through the addition of the Lewis-base complexing agent, NaI.