A lithium-air capacitor-battery based on a hybrid electrolyte

A hybrid electrolyte lithium-air battery, in which a lithium-anode in a non-aqueous electrolyte and an air catalytic cathode in an aqueous electrolyte solution were separated by a ceramic LISICON film, has been investigated in our previous work. In the present work, a capacitor electrode was put in the non-aqueous electrolyte solution as an additional cathode in parallel with the air catalytic cathode. The proposed lithium-air batteries with an additional capacitor cathode can successfully unite capacitor character and lithium-air battery character in one device which is now nominated as a lithium-air capacitor-battery based on a hybrid electrolyte. When high power is needed, the capacitor cathode would play the main role of peak power output; when high energy is demanded, the air catalytic cathode would display its high energy character. The adjustability of power output and energy output demonstrate that the proposed lithium-air capacitor-battery should be a promising power system for future electric vehicles.