Lg Energy Solution, Ltd.

Roun Kim

Sang Sok Jung

Sangjoon Park

Jeong Eon Park

Gilyoung Lee

A secondary battery includes an electrode assembly, an electrolyte solution, a seal tape, and a can. The electrode assembly has a structure in which a positive electrode, a negative electrode, and a separator are in a wound state. The seal tape includes a base and an adhesive layer provided on one surface of the base. The can accommodates the electrode assembly and the electrolyte solution. The negative electrode is disposed along an outer circumferential surface of the electrode assembly and the seal tape is provided on the outer circumferential surface. The adhesive layer is configured to expand when in contact with the electrolyte solution.

Secondary battery comprising seal tape

A battery cell having an electrode main body, in which a positive electrode and a negative electrode, each having an electrode mixture is coated on at least one surface of a metallic current collector, and a separation film interposed between the positive electrode and the negative electrode are wound together, a metal can, which accommodates the electrode main body together with an electrolyte solution; and a sealing tape attached to an exterior surface of the electrode main body so as to fix a distal end portion of the electrode main body, the sealing tape including a heat conductive material to provide heat conduction between the electrode main body and the metal can is provided.

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Daejeon, South Korea

Roun Kim