NOVELTY - The adhesive tape comprises a bonding layer contacting an outer surface of an electrode assembly, and a base layer in which the bonding layer is coated. An external surface of the electrode assembly is present in contact with the adhesive layer. The adhesive layer is applied onto a substrate. A multi-layered structure is present in a roll state when storing the adhesive tape. The bonding layer does not damage the base layer. The bonding layer is separated from a direction in which the bonding layer is not formed in the base layer. An adhesive force of the bonding layer is 300-600 gf.    USE - The adhesive tape is useful for an electrode assembly of a secondary battery of a battery module that is useful in a device comprising an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle or a power storage (all claimed), where the power storage is used in an electronic device such as cell phone, notebook computer and camcorder.    ADVANTAGE - The base layer of the adhesive tape is not damaged even when the adhesive force is excellent so that the excellent adhesive force can be maintained even when the adhesive tape reacts with the electrolyte in the battery and sticks to a case.    DETAILED DESCRIPTION - The adhesive tape comprises a bonding layer contacting an outer surface of an electrode assembly, and a base layer in which the bonding layer is coated. An external surface of the electrode assembly is present in contact with the adhesive layer. The adhesive layer is applied onto a substrate. A multi-layered structure is present in a roll state when storing the adhesive tape. The bonding layer does not damage the base layer. The bonding layer is separated from a direction in which the bonding layer is not formed in the base layer. An adhesive force of the bonding layer is 300-600 gf. The bonding layer is the first adhesive layer/sacrificial layer/second adhesive layer. A thickness of the adhesive tape is 10-60 mu m. INDEPENDENT CLAIMS are included for:    (1) an electrode assembly; and    (2) a secondary battery.