An electrochemical apparatus includes a housing, an electrode assembly, a first insulating layer, and an electrolyte, where the electrode assembly and the electrolyte are accommodated in the housing. The electrode assembly includes a plurality of electrode...

A dielectric thin film for a solid-state or semi-solid lithium battery, wherein the dielectric thin film is connected between a negative electrode and a positive electrode of the lithium battery. The dielectric thin film includes a first film layer connect...

A separator and a preparation method of separator, a battery cell including the separator, a battery including the battery cell, and an electric device including the battery, where the separator includes at least two base films and a functional layer inter...