Abstract: An electrochemical apparatus includes an electrolyte solution comprising a compound of Formula I and a compound of Formula II wherein R1 is halogenated C1 to C10 alkyl and R2 is C1 to C10 alkyl; and R21, R22, R23, and R24 are each independently fluorine or unsubstituted or halogenated C1 to C3 alkyl, and at least one of R21, R22, R23, and R24 contains fluorine.

Abstract: The present disclosure provides a refrigerator, including a storage compartment and a door opening or closing the storage compartment. A vacuum sealing device is disposed on the door. The vacuum sealing device includes an upper support and a lower support opposite to each other and a vacuumization assembly. The lower support is detachably connected to the door; opening cavities are formed on mutually-opposed surfaces of the upper support and/or the lower support; the upper support can move close to or away from the lower support under the drive of a driving device; the upper supports moves close to the lower support until the upper support and the lower support are butt-joined, and the opening cavities sealingly form a vacuumization region by sealing portions; the vacuumization assembly is in communication with the vacuumization region through a pipe to perform vacuumization or depressurization for the vaccumization region.