▎ 摘　　要

NOVELTY - Energy storage device comprises a positive electrode (110), a negative electrode made of aluminum, a separator provided between the positive electrode and negative electrode, and an electrolyte provided between positive and negative electrodes and partly located in the separator. The electrolyte comprises an aluminum halide and an ionic liquid. The halide is configured to produce a faradaic pseudocapacitance reaction in the device, The liquid cooperates with the reaction. The separator comprises a polymer film. USE - Energy storage device. ADVANTAGE - The energy storage device exhibits relatively good performance in terms of fast charging and discharging (C-rate), electric capacity, and life. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic cross-sectional view of a positive electrode faradaic pseudo-capacitance reaction of an energy storage device made of an aluminum electrode. 10Ion 110Positive electrode 112Intercalation material 114Nickel foil