公开(公告)号：US20230095804A1

公开(公告)日：2023-03-30

申请号：US17795049

申请日：2021-01-19

Applicant: LG Energy Solution, Ltd.

Inventor： Sang Min Park ,  Eun Sol Lho ,  Sung Bin Park ,  Seul Ki Kim ,  Wen Xiu Wang ,  Wang Mo Jung

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

Abstract: A positive electrode active material, and a positive electrode and a lithium secondary battery including the same are disclosed herein. In some embodiments, a positive electrode active material includes a lithium composite transition metal oxide containing nickel, cobalt, and manganese and having a nickel content for 60 mol % or more, based on metals (M) excluding lithium, and is in the form of single particles having an average particle diameter (D50) of 1 to 10 μm, wherein a 100-nm region extending from the surface toward the center of a single particle has crystal structures of a Fd3M and a Fm3m space group, and a phase ratio is 0.2 to 0.7, which is a ratio of a first portion of a maximum straight length of the 100-nm region occupied by the crystal structure of the Fd3M space group to a second portion occupied by the crystal structure of the Fm3m space group.

公开(公告)号：US20220223861A1

公开(公告)日：2022-07-14

申请号：US17606929

申请日：2020-12-23

Applicant: LG Energy Solution, Ltd.

Inventor： Hakyoon Kim ,  Gi Beom Han ,  Sang Wook Lee ,  Sora Baek ,  Jungmin Han ,  Wang Mo Jung

IPC: H01M4/525 ,  H01M4/36 ,  H01M4/505 ,  H01M4/04

Abstract: A positive electrode for a secondary battery in which a positive electrode mixture including a positive electrode active material is formed on at least one surface of a current collector is provided. The positive electrode includes a lithium by-product so as to satisfy the following Equation 1 based on the total weight of the positive electrode mixture. 4000 A - 2000 ≤ B ⁡ ( ppm ) [ Equation ⁢ ⁢ 1 ] wherein in the Equation 1, A is the molar content of Ni when the total mole of transition metal contained in the positive electrode active material is 1, and B is the content of lithium by-product, when A is 0.5 or less, the minimum value of B is 6000 ppm. The positive electrode also has a harness at which cracks occur in a measuring rod of 2 pi (Ø) or more.

公开(公告)号：US20220158192A1

公开(公告)日：2022-05-19

申请号：US17435820

申请日：2020-03-09

Applicant: LG Energy Solution, Ltd.

Inventor： Tae Gon Kim ,  Ki Won Sung ,  Wang Mo Jung ,  Sin Young Park ,  Dae Jin Lee ,  Bo Ram Lee ,  Hak Yoon Kim

IPC: H01M4/62 ,  H01M4/48

Abstract: A negative electrode includes a negative electrode active material layer, wherein the negative electrode active material layer includes a negative electrode active material and a conductive material. The negative electrode active material includes SiOx (0≤x

公开(公告)号：US20220140340A1

公开(公告)日：2022-05-05

申请号：US17433863

申请日：2020-03-06

Applicant: LG Energy Solution, Ltd.

Inventor： Tae Gon Kim ,  Wang Mo Jung ,  Kwang Woo Yoon ,  Seung Yong Son ,  Byung Joon Chae ,  Sin Young Park ,  Se Hui Sohn ,  Dae Jin Lee ,  Bo Ram Lee ,  Hak Yoon Kim ,  Seul Ki Kim ,  Jin Young Hwang

IPC: H01M4/583 ,  C01B32/162

Abstract: The present invention relates to a carbon nanotube having an La(100) of less than 7.0 nm when measured by XRD and a specific surface area of 100 m2/g to 196 m2/g, and an electrode and a secondary battery including the carbon nanotube.

公开(公告)号：US12249706B2

公开(公告)日：2025-03-11

申请号：US17775742

申请日：2021-04-19

Applicant: LG Energy Solution, Ltd.

Inventor： Tae Gon Kim ,  Yong Ju Lee ,  Il Geun Oh ,  Min Kwak ,  Je Young Kim ,  Wang Mo Jung

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M4/62 ,  H01M4/02

Abstract: The present invention relates to a silicon-carbon composite negative electrode active material, a negative electrode including the same, and a secondary battery, wherein the silicon-carbon composite negative electrode active material includes a core containing SiOX (0≤X

公开(公告)号：US12176535B2

公开(公告)日：2024-12-24

申请号：US18210427

申请日：2023-06-15

Applicant: LG Energy Solution, Ltd.

Inventor： So Ra Baek ,  Min Suk Kang ,  Sang Wook Lee ,  Wang Mo Jung ,  Dong Hun Lee ,  Hye Lim Jeon ,  Eun Sol Lho

IPC: H01M4/525 ,  C01B35/12 ,  C01G53/00 ,  H01M4/02 ,  H01M4/04 ,  H01M4/131 ,  H01M4/1315 ,  H01M4/1391 ,  H01M4/13915 ,  H01M4/36 ,  H01M4/505 ,  H01M4/62 ,  H01M10/0525

Abstract: A positive electrode active material for a secondary battery includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), and a glassy coating layer formed on surfaces of particles of the lithium composite transition metal oxide, wherein, in the lithium composite transition metal oxide, an amount of the nickel (Ni) in a total amount of transition metals is 60 mol % or more, and an amount of the manganese (Mn) is greater than an amount of the cobalt (Co), and the glassy coating layer includes a glassy compound represented by Formula 1. LiaM1bOc  [Formula 1] wherein, M1 is at least one selected from the group consisting of boron (B), aluminum (Al), silicon (Si), titanium (Ti), and phosphorus (P), and 1≤a≤4, 1≤b≤8, and 1≤c≤20.

公开(公告)号：US20240270603A1

公开(公告)日：2024-08-15

申请号：US18573109

申请日：2022-11-02

Applicant: LG Energy Solution, Ltd.

Inventor： Eun Sol Lho ,  Gi Beom Han ,  Jong Woo Kim ,  Wang Mo Jung ,  Sang Min Park ,  Sang Wook Lee ,  Seul Ki Kim ,  Hyeong ll Kim

IPC: C01G53/00 ,  H01M4/02 ,  H01M4/525 ,  H01M10/052

CPC classification number: C01G53/50 ,  H01M4/525 ,  H01M10/052 ,  H01M10/4235 ,  C01P2006/40 ,  H01M2004/028

Abstract: The present invention relates to a method of preparing a positive electrode active material for a lithium secondary battery and a positive electrode active material prepared thereby, wherein the preparation method includes a first step of preparing a lithium transition metal oxide by mixing a lithium raw material and a transition metal precursor containing 70 mol % or more of nickel based on the total number of moles of transition metals and sintering the mixture; and a second step of washing the lithium transition metal oxide with hot water of more than 90° C., wherein, after the second step, a result of EELS analysis of a particle surface of the lithium transition metal oxide satisfies Equation 1.

公开(公告)号：US20240258499A1

公开(公告)日：2024-08-01

申请号：US18443588

申请日：2024-02-16

Applicant: LG Energy Solution, Ltd.

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

IPC: H01M4/131 ,  H01M4/02 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525

CPC classification number: H01M4/131 ,  H01M4/0471 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028

Abstract: A positive electrode active material for a secondary battery includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), and at least one particle growth-promoting element selected from the group consisting of strontium (Sr), zirconium (Zr), magnesium (Mg), yttrium (Y), and aluminum (Al). The lithium composite transition metal oxide includes the nickel (Ni) in an amount of 65 mol % or more and the manganese (Mn) in an amount of 5 mol % or more based on a total amount of transition metals, and the positive active material has a single particle.

公开(公告)号：US12040473B2

公开(公告)日：2024-07-16

申请号：US17311914

申请日：2019-12-06

Applicant: LG Energy Solution, Ltd.

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

IPC: H01M4/04 ,  C23C16/40 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  C23C16/455 ,  H01M4/02

CPC classification number: H01M4/0428 ,  C23C16/403 ,  C23C16/405 ,  H01M4/0404 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  C23C16/45525 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2220/20

Abstract: The present disclosure provides a method for manufacturing a positive electrode for a secondary battery, the method including forming a positive electrode mixture layer including a positive electrode active material on a positive electrode current collector, and forming a metal oxide coating layer on the positive electrode mixture layer by atomic layer deposition, wherein the positive electrode active material includes lithium composite transition metal oxide particles and a boron-containing coating layer formed on the lithium composite transition metal oxide particles, and the lithium composite transition metal oxide particles include nickel (Ni), cobalt (Co), and manganese (Mn), wherein the nickel (Ni) is 60 mol % or greater of all metals excluding lithium.

公开(公告)号：US20240234720A1

公开(公告)日：2024-07-11

申请号：US18615093

申请日：2024-03-25

Applicant: LG Energy Solution, Ltd.

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

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/02 ,  H01M4/04 ,  H01M4/505 ,  H01M10/0525

CPC classification number: H01M4/525 ,  C01G53/50 ,  H01M4/0471 ,  H01M4/505 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

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 elements selected from the group consisting of Zr, Al, V, Co, and Mg and additional two or more elements selected from the group consisting of Ti, Y, Sr, Nb, Ba, and Ca, and the lithium composite transition metal oxide is in a form of a particle having a crystallite size of 170-300 nm.