公开(公告)号：US20230187692A1

公开(公告)日：2023-06-15

申请号：US18163699

申请日：2023-02-02

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Woo Suk CHO ,  Kyung Su KIM ,  Ji Sang YU ,  Goo Jin JEONG ,  Keon Ho PARK

IPC: H01M10/0562

CPC classification number: H01M10/0562 ,  H01M2300/008

Abstract: A solid electrolyte having satisfactory moisture stability and ion conductivity through activation energy improvement and a solid-state battery including the same are proposed. The solid electrolyte may include an oxysulfide-based compound represented by the following chemical formula: [Chemical formula] LiaMbPcSdOeXf, wherein 5≤a≤7, 0

公开(公告)号：US20230387407A1

公开(公告)日：2023-11-30

申请号：US18364737

申请日：2023-08-03

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Woo Suk CHO ,  Kyung Su KIM ,  Ji Sang YU ,  Jun Ho SONG ,  Keon Ho PARK

IPC: H01M4/525 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/62 ,  C01G53/00

CPC classification number: H01M4/525 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/62 ,  C01G53/50 ,  H01M2004/028

Abstract: A positive electrode active material, an all-solid-state battery comprising same, and a method for manufacturing same are proposed. The positive electrode active material may include a lithium metal oxide in the form of single particles having a particle strength of 300 MPa to 1500 MPa and an average particle diameter of at most 10 μm. Since the positive electrode active material is in the form of single particles having a high particle strength of at least 300 MPa and a small average particle diameter of at most 10 μm as indicated above, cracks may not form or may be delayed even when pressure is applied during the manufacture of the positive electrode or structural stress is applied over the lifespan of the battery.