-
公开(公告)号：US10978683B2
公开(公告)日：2021-04-13
申请号：US15743797
申请日：2016-08-18
Applicant: LG Chem, Ltd.
Inventor： Ji Won Min , Sun Hwak Woo , Seok Koo Kim , Sei Woon Oh , Eun Ju Lee
IPC: H01M2/10 , H01M10/058 , H01M10/44 , H01M2/16 , H01M4/134 , H01M4/485 , H01M10/0525 , H01M4/04 , H01M4/38 , H01M4/02
Abstract: The present invention provides a method of manufacturing n battery cells (n≥2), each including a respective reference electrode for measuring a relative electrode potential, including: (i) manufacturing a reference cell composed of an electrolyte solution, the reference electrodes, and a lithium electrode; (ii) charging the reference cell; (iii) charging the reference cell to 40% to 60% of a capacity discharged in the process (ii), thereby performing formation on the reference electrodes; (iv) manufacturing the n battery cells, each of the battery cells including a respective one of the reference electrodes, an electrode assembly, the electrolyte solution and a battery case; and (v) in each of the battery cells, measuring a relative potential of the respective one of the reference electrodes and a positive electrode of the respective electrode assembly, and a relative potential of the respective one of the reference electrodes and a negative electrode of the respective electrode assembly.
-
公开(公告)号：US11735709B2
公开(公告)日：2023-08-22
申请号：US16629234
申请日：2018-07-09
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-
Patent Agency Ranking
公开(公告)号：US11545659B2
公开(公告)日：2023-01-03
申请号：US16643733
申请日：2018-11-21
Applicant: LG CHEM, LTD.
Inventor： Yeon Suk Hong , Seok Koo Kim , Sun Kyu Kim , Ji Won Min
IPC: H01M4/36 , H01M4/04 , H01M4/38 , H01M4/134 , H01M4/1395 , H01M4/48 , H01M4/62 , H01M10/0525 , H01M4/02
Abstract: A negative electrode for a lithium secondary battery, where the negative electrode includes a negative electrode current collector, a negative electrode active material layer, a lithium layer that is positioned between the negative electrode current collector and the negative electrode active material layer, and a primer layer that is positioned between the negative electrode current collector and the lithium layer, and a manufacturing method thereof. This results in a simple method and a negative electrode with high capacity characteristics.
-
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
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.
-
5.发明申请公开(公告)号：US20200227724A1
公开(公告)日：2020-07-16
申请号：US16629234
申请日：2018-07-09
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
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：US20180205049A1
公开(公告)日：2018-07-19
申请号：US15743797
申请日：2016-08-18
Applicant: LG Chem, Ltd.
Inventor： Ji Won Min , Sun Hwak Woo , Seok Koo Kim , Sei Woon Oh , Eun Ju Lee
IPC: H01M2/10 , H01M10/0525 , H01M10/058 , H01M10/44 , H01M2/16 , H01M4/134 , H01M4/485
CPC classification number: H01M2/1016 , H01M2/16 , H01M4/0445 , H01M4/134 , H01M4/382 , H01M4/485 , H01M10/0525 , H01M10/058 , H01M10/44 , H01M10/441 , H01M10/446 , H01M2004/021 , H01M2220/30
Abstract: The present invention provides a method of manufacturing a battery cell, including: (i) manufacturing a reference cell composed of an electrolyte solution, n reference electrodes (n≥2) and a lithium electrode; (ii) charging the reference cell by applying a microcurrent, and then discharging the reference cell immediately thereafter; (iii) charging the reference cell to 40% to 60% of a capacity discharged in the process (ii), thereby performing formation on the reference electrodes so that the reference electrodes have a plateau potential simultaneously; (iv) manufacturing n battery cells with the reference electrodes subjected to formation, an electrode assembly, the electrolyte solution and a battery case; and (v) measuring a relative potential of the reference electrode subjected to formation and a positive electrode, and a relative potential of the reference electrode and a negative electrode, in each of the battery cells.
-
-
-
-
-
-
Search Results
7
records
(took 0.017 seconds)
