| 摘要 |
PURPOSE: A secondary battery is provided, to improve the adhesive power between the components of the electrode assembly and to prevent the increase of the interfacial resistance by making a penetrating hole in an electrode and/or a separator. CONSTITUTION: The secondary battery comprises a polymer electrolyte injected into the exterior container; an anode(34) and a cathode(31) which are constructed in the inside of the exterior container and at least one of the two has a primary penetrating hole to allow the polymer electrolyte to be injected into the central part; and a separator(37) placed between the anode and the cathode. Preferably the separator has a secondary penetrating hole and the secondary penetrating hole is formed at the opposite position to the primary penetrating hole. The polymer electrolyte is formed by thermal polymerization of the composition comprising a prepolymer of a copolymer of vinylidene fluoride and hexafluoropropylene, lithium salt and an organic solvent.
|
