Aluminum air battery electrolyte as well as preparation method and application thereof

The invention belongs to the technical field of aluminum air batteries, and particularly discloses an aluminum air battery electrolyte as well as a preparation method and application thereof. The invention finds that the trifluoromethanesulfonic acid group can form a strong hydrogen bond with water molecules so as to inhibit water activity and increase hydrogen evolution reaction activation energy, and the trifluoromethanesulfonic acid group can be respectively adsorbed on the surface of the aluminum anode/air cathode during shelving/discharging, and forms a local water-poor structure on the surface of the aluminum anode/air cathode so as to improve the hydrogen evolution reaction activation energy. Therefore, the aluminum anode and the air cathode are effectively protected. The alkaline electrolyte used in the invention can greatly reduce the self-discharge of the battery, and at the same time can improve the shelving voltage of the battery to a certain extent. The electrolyte added with the additive with th