Lg Energy Solution, Ltd.

Yeong Hun Jung

Jin Soo Lee

Jeong Ho Park

Joo Hwan Sung

Min Gyu Kim

Bu Won Son

Jin Yeong Lee

Min Su Cho

Yong Gon Lee

Sang Hak Chae

Geun Young Park

Byung Sup Kim

Min Seon Kim

A button-type secondary battery includes an electrode assembly including a first separator, a negative electrode, a second separator, and a positive electrode that are sequentially stacked and wound, wherein ends of the first separator and the second separator are disposed closer to a center of the wound electrode assembly than ends of the positive electrode and the negative electrode; an electrolyte; and a can in which the electrode assembly and the electrolyte are accommodated. In the electrode assembly, an expansion member is attached to at least one central end of the first separator or the second separator, and the expansion member is expanded by absorbing the electrolyte.

Button-type secondary battery

Growing community of inventors

Daejeon, South Korea

Yeong Hun Jung