Anion-effects on electrochemical properties of ionic liquid electrolytes for rechargeable aluminum batteries

Anion-effects are embodied in: (1) halogen anions resulting from different halogenated imidazole salt species, which is the critical factor for electrochemical windows; (2) aluminum chloride anions resulting from different AlCl₃/imidazole salt mole ratios, which is the determinant of electrochemical activities.