公开(公告)号：US11799072B2

公开(公告)日：2023-10-24

申请号：US17058194

申请日：2020-01-03

Applicant: LG CHEM, LTD.

Inventor： Hee Won Choi ,  Je Young Kim ,  Sang Wook Woo ,  Li Lin Piao

IPC: H01M4/36 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/364 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027

Abstract: An anode active material for a secondary battery, which has improved cycle swelling properties and rapid charge performance, an anode comprising an anode active material for a secondary battery, and a method for manufacturing same. The anode active material is a mixture of scaly natural graphite and spherical natural graphite. An average particle diameter (D50) of the scaly natural graphite is 10 μm to 15 μm and an average particle diameter (D50) of the spherical natural graphite is 14 μm or less.

公开(公告)号：US11866338B2

公开(公告)日：2024-01-09

申请号：US17257184

申请日：2020-01-17

Applicant: LG CHEM, LTD.

Inventor： Hee Won Choi ,  Je Young Kim ,  Sang Wook Woo ,  Li Lin Piao

IPC: C01B32/205 ,  C01B32/21

CPC classification number: C01B32/205 ,  C01B32/21 ,  C01P2004/32 ,  C01P2006/17

Abstract: An anode active material for secondary batteries which has improved cycle swelling characteristics and rapid charge performance, an anode comprising same, and a method for manufacturing same, in which the anode active material is manufactured by modifying the surface of natural graphite particles. The natural graphite particles have a Dmax/Dmin value of 1.6 to 2.1 in the particle size distribution thereof and have, formed in the surface thereof, pores having a diameter of 0.5 μm to 2.0 μm.

公开(公告)号：US11862799B2

公开(公告)日：2024-01-02

申请号：US17049471

申请日：2019-12-10

Applicant: LG CHEM, LTD.

Inventor： Hee Won Choi ,  Je Young Kim ,  Sang Wook Woo ,  Li Lin Piao

IPC: H01M4/587 ,  H01M4/133 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/587 ,  H01M4/133 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027

Abstract: An anode active material for a secondary battery that has improved cycle swelling properties and rapid charge performance, an anode comprising same, and a method for manufacturing same. The anode active material is a mixture of artificial graphite and spherical natural graphite, wherein the spherical natural graphite has an average particle diameter (D 50) of 12 μm or less, with D 90-D 10 value ranging from 5 μm to 12 μm.