公开(公告)号：US20250105275A1

公开(公告)日：2025-03-27

申请号：US18823190

申请日：2024-09-03

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Woo Suk CHO ,  Hyun Seung KIM ,  Jun Ho SONG ,  Ji Sang YU ,  Kyung Su KIM

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/02 ,  H01M4/131 ,  H01M4/62 ,  H01M10/0585

Abstract: Proposed is a positive electrode containing a positive electrode active material having a multimodal particle-size distribution to suppress particle crack of the positive electrode active material caused by pressure applied during a positive electrode and cell manufacturing process, thereby exhibiting excellent electrical characteristics. In addition, an all-solid-state battery including the positive electrode is proposed. The positive electrode may include a positive electrode active material formed of a lithium transition metal oxide and having a multimodal particle-size distribution in which particles with relatively small particle diameters have greater particle strength than particles with relatively large particle diameters.