Lg Energy Solution, Ltd.

Korea Research Institute of Chemical Technology

Byung Sup Kim

Sung Soo Kim

Joo Hwan Sung

Je Jun Lee

Min Gyu Kim

Geon Woo Min

Min Su Cho

Ki J Hwang

Yong Gon Lee

Kwang Su Hwangbo

Sang Hak Chae

Geun Young Park

Yeong Hun Jung

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

Propenoic ester derivatives having 4-hydroxypyrazole group and the use

Growing community of inventors

Daejeon, South Korea

Byung Sup Kim