公开(公告)号：US11276901B2

公开(公告)日：2022-03-15

申请号：US16088719

申请日：2017-09-29

Applicant: LG CHEM, LTD.

Inventor： Ji-Won Min ,  Seok-Koo Kim ,  Hoe-Jin Hah ,  Janis Doelle

IPC: H01M50/00 ,  H01M50/449 ,  H01M4/38 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

Abstract: The present disclosure relates to a separator for a lithium ion secondary battery and a battery comprising the separator. The separator supplements the irreversible capacity of a negative electrode. The separator comprises composite particles (A), and the composite particles (A) include a core portion comprising lithium composite metal oxide particles and a shell portion comprising a carbonaceous material with which the core surface is coated at least partially; the composite particles (A) cause lithium deintercalation at 0.1 V to 2.5 V (vs. Li+/Li); the battery has a positive electrode potential of 3 V or more (vs. Li+/Li); and the battery has a driving voltage of 2.5 V to 4.5 V.

公开(公告)号：US10581059B2

公开(公告)日：2020-03-03

申请号：US15744563

申请日：2016-09-12

Applicant: LG Chem, Ltd.

Inventor： Janis Doelle

IPC: H01M4/04 ,  H01M10/052 ,  H01M2/10 ,  H01M10/04 ,  H01M4/1391 ,  H01M10/0525

Abstract: The present invention relates to a method of manufacturing an electrode for a rechargeable battery, including (a) coating electrode slurry including an electrode active material, a binder, and a solvent on one surface of a sheet-shaped current collector; and (b) drying the electrode slurry while applying vacuum in a direction of decreasing agglomeration of the binder due to vaporization of the solvent.

公开(公告)号：US11735709B2

公开(公告)日：2023-08-22

申请号：US16629234

申请日：2018-07-09

Applicant: LG Chem, Ltd. ,  UNIST (Ulsan National Institute of Science and Technology)

Inventor： Ji Won Min ,  Seok Koo Kim ,  Youngsik Kim ,  Janis Doelle ,  Seongwoo Heo ,  Youngjun Lim

IPC: H01M4/04 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/131 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M2004/028

Abstract: Provided is a positive electrode for a lithium secondary battery, the positive electrode including a positive electrode mixture layer on a positive electrode current collector, wherein the positive electrode mixture layer includes a positive electrode active material and a lithium ion additive, the lithium ion additive is a lithium ion conductive ceramic material represented by Formula 1 below, and the lithium ion conductive ceramic material has a structure in which lithium ions are additionally inserted into vacancy sites of a NASICON-type (Na super ionic conductors-type) structure.

Li1+x1+y1M12−x1M2x1(PO4)3  [Formula 1]

In Formula 1, M1 is at least one of Ti and Ge, M2 is one or more selected from the group consisting Al, Cr, Ga, Fe, Sn, In, Lu, Y, and La, and 0

公开(公告)号：US11043663B2

公开(公告)日：2021-06-22

申请号：US16337353

申请日：2018-03-08

Applicant: LG CHEM, LTD.

Inventor： Ji Won Min ,  Seok Koo Kim ,  Yong Jun Kim ,  Janis Doelle ,  Se Mi Park

IPC: H01M4/00 ,  H01M10/00 ,  H01M50/00 ,  H01M4/139 ,  H01M4/04 ,  H01M10/0525 ,  H01M50/20

Abstract: A method of manufacturing a high loading electrode, which prevents the phenomenon of the binder being lifted, does not cause drying of the electrode slurry, and does not cause damage of the electrode layer and reduction of the electrode strength at the corners in the punching is provided. The method of manufacturing the high loading electrode includes applying an electrode slurry on a release film to thereby produce an electrode layer having the release film attached thereto, punching the electrode layer having the release film attached thereto to provide a plurality of punched electrode layers, each punched electrode layer having a size of a unit electrode, separating and removing the release film from the punched electrode layers, and stacking and rolling at least two punched electrode layers on a current collector.

公开(公告)号：US20200227724A1

公开(公告)日：2020-07-16

申请号：US16629234

申请日：2018-07-09

Applicant: LG Chem, Ltd. ,  UNIST (Ulsan National Institute of Science and Technology)

Inventor： Ji Won Min ,  Seok Koo Kim ,  Youngsik Kim ,  Janis Doelle ,  Seongwoo Heo ,  Youngjun Lim

IPC: H01M4/131 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/04

Abstract: Provided is a positive electrode for a lithium secondary battery, the positive electrode including a positive electrode mixture layer on a positive electrode current collector, wherein the positive electrode mixture layer includes a positive electrode active material and a lithium ion additive, the lithium ion additive is a lithium ion conductive ceramic material represented by Formula 1 below, and the lithium ion conductive ceramic material has a structure in which lithium ions are additionally inserted into vacancy sites of a NASICON-type (Na super ionic conductors-type) structure. Li1+x1+y1M12−x1M2x1(PO4)3   [Formula 1] In Formula 1, M1 is at least one of Ti and Ge, M2 is one or more selected from the group consisting Al, Cr, Ga, Fe, Sn, In, Lu, Y, and La, and 0

公开(公告)号：US20180301740A1

公开(公告)日：2018-10-18

申请号：US15768987

申请日：2017-06-14

Applicant: LG Chem, Ltd.

Inventor： Ji Won Min ,  Hoe Jin Hah ,  Jong Keon Yoon ,  Seok Koo Kim ,  Yeo Kyung Yoon ,  Janis Doelle

IPC: H01M10/052 ,  H01M4/62 ,  H01M4/66 ,  H01M4/583 ,  H01M4/505 ,  H01M4/525 ,  H01M4/131 ,  H01M10/48

Abstract: Provided are an electrode for a secondary battery and a manufacturing method thereof. According to the present invention, a secondary battery, which has high capacity and is also able to get an excellent evaluation in a nail penetration test so that stability is ensured, may be manufactured. In order to accomplish the above objectives, the present invention provides an electrode for a secondary battery which includes an electrode current collector; a first electrode active material layer formed on the electrode current collector; and a second electrode active material layer formed on the first electrode active material layer, wherein a layer composed of the electrode current collector and the first electrode active material layer has a tensile strain of 1.2% or less.

公开(公告)号：US20180205066A1

公开(公告)日：2018-07-19

申请号：US15744563

申请日：2016-09-12

Applicant: LG Chem, Ltd.

Inventor： Janis Doelle

IPC: H01M4/04 ,  H01M4/1391

CPC classification number: H01M4/0404 ,  H01M2/10 ,  H01M4/04 ,  H01M4/1391 ,  H01M10/04 ,  H01M10/052 ,  H01M10/0525

Abstract: The present invention relates to a method of manufacturing an electrode for a rechargeable battery, including (a) coating electrode slurry including an electrode active material, a binder, and a solvent on one surface of a sheet-shaped current collector; and (b) drying the electrode slurry while applying vacuum in a direction of decreasing agglomeration of the binder due to vaporization of the solvent.