公开(公告)号：US09979043B2

公开(公告)日：2018-05-22

申请号：US14982748

申请日：2015-12-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hojung Yang ,  Jinseok Heo ,  Hwiyeol Park ,  Kyunghoon Cho

IPC: H01M10/04 ,  H01M4/48 ,  H01M4/66 ,  H01M10/052

CPC classification number: H01M10/04 ,  H01M4/48 ,  H01M4/668 ,  H01M10/052

Abstract: A three dimensional (“3D”) secondary battery includes an electrolyte layer and an anode active material layer that are sequentially stacked on a plurality of first trenches that are provided in a cathode active material layer where, in the anode active material layer, a plurality of second trenches having similar shape to that of the first trenches is provided and the plurality of second trenches are filled with an elastic member and where the elastic member absorbs expansion of the anode active material layer during charging and discharging the 3D secondary battery, and thus, the degradation of the 3-dimensional secondary battery is prevented.