公开(公告)号：US12191484B2

公开(公告)日：2025-01-07

申请号：US17298818

申请日：2019-12-04

Applicant: LG Chem, Ltd.

Inventor： Jung Min Han ,  Dong Hun Lee ,  Sung Bin Park ,  Hyung Man Cho ,  Jin Tae Hwang ,  Wang Mo Jung

IPC: H01M4/525 ,  H01M4/36 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/02

Abstract: A positive electrode material and a positive electrode and a lithium secondary battery including the same are provided. The positive electrode material having a bimodal particle size distribution which includes large-diameter particles and small-diameter particles having different average particle diameters (D50), wherein the large-diameter particles are lithium composite transition metal oxide having a nickel content of 80 atm % or more in all transition metals thereof, and the small-diameter particles are a lithium composite transition metal oxide including nickel, cobalt, and aluminum, having a nickel content of 80 atm % to 85 atm % in all transition metals, and having an atomic ratio of the cobalt to the aluminum (Co/Al) of 1.5 to 5.

公开(公告)号：US11581535B2

公开(公告)日：2023-02-14

申请号：US16701621

申请日：2019-12-03

Applicant: LG Chem, Ltd.

Inventor： Jin Tae Hwang ,  Dong Hun Lee ,  Sung Bin Park ,  Hyung Man Cho ,  Jung Min Han ,  Wang Mo Jung

IPC: H01M4/525 ,  H01M10/0525 ,  H01M4/50 ,  H01M4/04 ,  H01M4/46 ,  H01M4/02

Abstract: A method for producing a positive electrode active material, a positive electrode active material produced thereby, and a positive electrode and a lithium secondary battery including the same are provided. The method includes preparing a nickel-manganese-aluminum precursor having an atomic fraction of nickel of 90 atm % or greater in all transition metals, and mixing the nickel-manganese-aluminum precursor, a cobalt raw material, and a lithium raw material and heat treating the mixture.

公开(公告)号：US11575116B2

公开(公告)日：2023-02-07

申请号：US16361740

申请日：2019-03-22

Applicant: LG CHEM, LTD. ,  THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Chi Ho Jo ,  Wang Mo Jung ,  Dong Hun Lee ,  Ying Shirley Meng ,  Abhik Banerjee ,  Minghao Zhang

IPC: H01M4/131 ,  H01M4/04 ,  H01M4/1391 ,  H01M4/525 ,  H01M10/0562 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/02

Abstract: A method of treating the surface of a positive electrode active material that is capable of inhibiting a reaction at the interface between a sulfide-based solid electrolyte and the positive electrode active material. A positive electrode active material particle for sulfide-based all-solid-state batteries, the surface of which is reformed, using the method and a sulfide-based all-solid-state battery, the charge/discharge characteristics of which are improved, including the same are also disclosed. The positive electrode active material particle for sulfide-based all-solid-state batteries manufactured using a dry-type method exhibits larger capacity than a positive electrode active material particle for sulfide-based all-solid-state batteries manufactured through a conventional wet-type process. In addition, the manufacturing process is simplified, and the amount of byproducts is reduced.

公开(公告)号：US11557763B2

公开(公告)日：2023-01-17

申请号：US16644379

申请日：2019-01-02

Applicant: LG Chem, Ltd.

Inventor： Byung Chun Park ,  Ji Hye Kim ,  Jung Min Han ,  Wang Mo Jung

IPC: H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/02

Abstract: A positive electrode active material includes a center portion including a first lithium transition metal oxide with an average composition represented by Formula 1, Li1+a1(Nib1Coc1Mnd1Ale1M1f1)O2  [Formula 1] wherein, in Formula 1, −0.1≤a1≤0.2, 0.8≤b1

公开(公告)号：US11377367B2

公开(公告)日：2022-07-05

申请号：US17077693

申请日：2020-10-22

Applicant: LG Chem, Ltd.

Inventor： Chi Ho Jo ,  Sungbin Park ,  Jiyoung Park ,  Bo Ram Lee ,  Hyuck Hur ,  Wang Mo Jung

IPC: C01G51/04 ,  H01M4/525 ,  H01M4/1315 ,  C01G51/00 ,  H01M4/02

Abstract: Provided is a cobalt precursor for preparing a lithium cobalt oxide of a layered structure which is included in a positive electrode active material, wherein the cobalt precursor is cobalt oxyhydroxide (CoM′OOH) doped with, as dopants, magnesium (Mg) and M′ different from the magnesium.

公开(公告)号：US11289695B2

公开(公告)日：2022-03-29

申请号：US16489562

申请日：2018-09-07

Applicant: LG Chem, Ltd.

Inventor： Gi Beom Han ,  Jintae Hwang ,  Sungbin Park ,  Wang Mo Jung

IPC: H01B1/08 ,  H01M4/36 ,  C01G41/00 ,  C01G53/00 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

Abstract: A positive electrode active material includes a lithium-rich lithium manganese-based oxide, wherein the lithium-rich lithium manganese-based oxide is represented by the following chemical formula (1), Li1+aNixCoyMnzMvO2-bAb  (1) wherein, 0

公开(公告)号：US20220059832A1

公开(公告)日：2022-02-24

申请号：US17298818

申请日：2019-12-04

Applicant: LG Chem, Ltd.

Inventor： Jung Min Han ,  Dong Hun Lee ,  Sung Bin Park ,  Hyung Man Cho ,  Jin Tae Hwang ,  Wang Mo Jung

IPC: H01M4/525 ,  H01M4/505 ,  H01M10/0525

Abstract: A positive electrode material and a positive electrode and a lithium secondary battery including the same are provided. The positive electrode material having a bimodal particle size distribution which includes large-diameter particles and small-diameter particles having different average particle diameters (D50), wherein the large-diameter particles are lithium composite transition metal oxide having a nickel content of 80 atm % or more in all transition metals thereof, and the small-diameter particles are a lithium composite transition metal oxide including nickel, cobalt, and aluminum, having a nickel content of 80 atm % to 85 atm % in all transition metals, and having an atomic ratio of the cobalt to the aluminum (Co/Al) of 1.5 to 5.

公开(公告)号：US11258054B2

公开(公告)日：2022-02-22

申请号：US16489922

申请日：2018-09-07

Applicant: LG Chem, Ltd.

Inventor： Gi Beom Han ,  Min Kyu You ,  Chi Ho Jo ,  Jintae Hwang ,  Wang Mo Jung ,  Sungbin Park

IPC: H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

Abstract: A positive electrode active material contains a lithium-rich lithium manganese-based oxide represented by chemical formula (1), Li1+aNixCoyMnzMvO2−bAb  (1) wherein, 0

公开(公告)号：US20220037658A1

公开(公告)日：2022-02-03

申请号：US17279759

申请日：2019-10-21

Applicant: LG Chem, Ltd.

Inventor： Sang Min Park ,  Ji Hye Kim ,  Tae Gu Yoo ,  Wang Mo Jung ,  Gi Beom Han

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/04 ,  H01M10/0525

Abstract: A lithium composite transition metal oxide includes nickel (Ni), cobalt (Co), and manganese (Mn), wherein the lithium composite transition metal oxide includes two or more kinds of first dopants selected from the group consisting of Zr, Al, V, Co, and Mg and two or more kinds of second dopants selected from the group consisting of Ti, Y, Sr, Nb, Ba, and Ca, and particles of the lithium composite transition metal oxide has a crystallite size of 170-300 nm.

公开(公告)号：US20220020988A1

公开(公告)日：2022-01-20

申请号：US17274860

申请日：2020-03-03

Applicant: LG Chem, Ltd.

Inventor： Boram Lee ,  Sin Young Park ,  Tae Gu Yoo ,  Taegon Kim ,  Min Kwak ,  Wang Mo Jung

IPC: H01M4/58 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0567 ,  C01B25/445 ,  C01G53/00 ,  C01B25/45

Abstract: The present disclosure relates to a positive electrode additive, a manufacturing method thereof, and a positive electrode and a lithium rechargeable battery including the same. Specifically, one embodiment of the present disclosure provides a positive electrode additive for a lithium rechargeable battery comprising: a compound represented by the following Chemical Formula 1; a compound represented by the following Chemical Formula 2; and lithium phosphate (Li3PO4): Li2+aNibM1−bO2+c   [Chemical Formula 1] wherein, M is a metal element forming a divalent cation, −0.2≤a≤0.2, 0.5≤b≤1.0, and −0.2≤c≤0.2, Ni2−eM1−eP4O12   [Chemical Formula 2] wherein, 0.5≤e≤1.0, and M is the same as defined in Chemical Formula 1.