公开(公告)号：US20240014399A1

公开(公告)日：2024-01-11

申请号：US18022834

申请日：2021-11-18

申请人： LG Energy Solution, Ltd.

发明人： Hae Jung Jung ,  Boram Lee ,  Tae Gu Yoo ,  Wang Mo Jung ,  Byungchun Park

IPC分类号： H01M4/62 ,  H01M4/131

CPC分类号： H01M4/628 ,  H01M4/131 ,  H01M2004/028

摘要： An additive for a positive electrode of a lithium secondary battery, the additive including a lithium transition metal oxide, Li3PO4, Li5AlO4 and Li3BO3. The lithium transition metal oxide has an aluminum-doped form. The additive including Li3PO4, Li5AlO4 and Li3BO3 together with the lithium transition metal oxide has functionality of improving stability of a battery when used in a positive electrode of a lithium secondary battery. The Li3PO4, the Li5AlO4 and the Li3BO3 are evenly mixed with the lithium transition metal oxide or some thereof form a partial coating layer, or a portion of aluminum is doped to the lithium transition metal oxide to suppress the lithium transition metal oxide from causing a side reaction with an electrolyte liquid.

公开(公告)号：US20240059581A1

公开(公告)日：2024-02-22

申请号：US18269719

申请日：2022-05-10

申请人： LG Energy Solution, Ltd.

发明人： Tae Gu Yoo ,  Boram Lee ,  Hae Jung Jung ,  Wang Mo Jung ,  Byungchun Park

IPC分类号： C01G53/00

CPC分类号： C01G53/42 ,  C01P2002/54 ,  C01P2006/40

摘要： An additive for a positive electrode of a lithium secondary battery comprising a lithium transition metal oxide, Li3PO4 and Li5AlO4. The lithium transition metal oxide is doped with aluminum. The additive comprising Li3PO4 and Li5AlO4 together with the lithium transition metal oxide has a function of improving battery stability when applied to a positive electrode of a lithium secondary battery. Specifically, when a general lithium transition metal oxide is applied to the positive electrode of a lithium secondary battery, it may cause a side reaction with the electrolyte solution to generate gas in the battery, which may cause a problem with poor stability. However, Li3PO4 and Li5AlO4 are uniformly mixed with the lithium transition metal oxide or partially form a coating layer, and some aluminum is doped into the lithium transition metal oxide to inhibit the lithium transition metal oxide from causing side reactions with the electrolyte solution.