公开(公告)号：US12107276B2

公开(公告)日：2024-10-01

申请号：US17612026

申请日：2020-09-16

申请人： LG ENERGY SOLUTION, LTD.

发明人： Bong Soo Kim ,  Gi Su Park ,  Seong Ho Lee

IPC分类号： H01M4/80 ,  H01M4/04 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/36 ,  H01M10/052 ,  H01M4/02

CPC分类号： H01M4/80 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/364 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/028

摘要： A positive electrode for a lithium-sulfur secondary battery includes a positive electrode active material layer having an intaglio pattern formed therein. A method for manufacturing the same, and a lithium-sulfur secondary battery including the same are also provided. The positive electrode active material layer has a porosity of 50 to 65%. The intaglio pattern has a width of 1 to 100 μm and a depth of 30 to 99% based on the thickness of the positive electrode active material layer. The volumetric ratio of the positive electrode active material layer and the intaglio pattern is 4:1 to 40:1. When the positive electrode is applied to a lithium-sulfur secondary battery, the energy density per unit volume can be remarkably improved.