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公开(公告)号：US20230046215A1
公开(公告)日：2023-02-16
申请号：US17882445
申请日：2022-08-05
发明人： Jungmin Lee , Jangwook Choi , Yunshik Cho , Jaemin Kim , Kiho Park
IPC分类号： H01M4/62 , H01M10/0525 , H01M4/583
摘要： An electrode binder for a lithium secondary battery, and an electrode and a lithium secondary battery, including the electrode binder. The electrode binder includes: a cellulose-based graft copolymer grafted with a compound having an ion-hopping site; and a polyacrylate-based polymer having an anionic group via an exchange with a cation. By including the electrode binder in at least one of the positive electrode and the negative electrode, it is possible to provide a lithium secondary battery capable of enhancing fast charging/discharging behavior efficiency of the electrode by reducing electrode resistance generated inside the electrode during charging/discharging.
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公开(公告)号：US12009520B2
公开(公告)日：2024-06-11
申请号：US17050790
申请日：2019-03-15
发明人： Jungmin Lee , Ilkyong Kwon , Myungseop Kim , Yuhyun Kim
IPC分类号： H01M4/583 , H01M4/04 , H01M4/62 , H01M10/0525
CPC分类号： H01M4/583 , H01M4/0404 , H01M4/623 , H01M10/0525
摘要： Disclosed are a secondary lithium battery anode and a secondary lithium battery including same, the secondary lithium battery anode comprising a current collector and an anode active material layer located on at least one surface of the current collector, wherein the anode active material layer includes an anode active material, which has sphericity of 0.83 to 0.91, and a binder, which has an average particle diameter (D50) of 180 nm to 450 nm.
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公开(公告)号：US11569507B2
公开(公告)日：2023-01-31
申请号：US16762354
申请日：2018-09-10
发明人： Yuhyun Kim , Myungseop Kim , Jungmin Lee , Ilkyong Kwon
IPC分类号： H01M4/62 , H01M10/0525 , H01M4/02
摘要： The present invention relates to an anode for lithium secondary battery and a lithium secondary battery comprising the same, the anode for lithium secondary battery comprising a current collector; and an anode active material layer which is formed on one surface of the current collector, and comprises an anode active material and a cellulose-based compound which has a weight-average molecular weight (Mw) of 500,000 g/mol to 700,000 g/mol and a substitution degree of 0.9 to 1.0, wherein the anode for lithium secondary battery has a loading level (L/L) of 13 mg/cm2 or greater.
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公开(公告)号：US20240322174A1
公开(公告)日：2024-09-26
申请号：US18482608
申请日：2023-10-06
发明人： Kukjoo Lee , Yunshik Cho , Seunghyun Oh , Minho Cho , Kyunghwa Jung , Jungmin Lee
IPC分类号： H01M4/62 , H01M4/133 , H01M4/38 , H01M10/0525
CPC分类号： H01M4/622 , H01M4/133 , H01M4/386 , H01M10/0525 , H01M2004/027
摘要： A negative electrode and a lithium battery including the same are provided. The negative electrode includes a negative electrode current collector, and a negative electrode active material layer provided on the negative electrode current collector. The negative electrode active material layer includes a negative electrode active material, a binder, and a carbon-based conductive material. The negative electrode active material includes a metal-based negative electrode active material, the binder includes an acrylic-based binder, and the carbon-based conductive material includes a fibrous carbon-based conductive material. The acrylic-based binder includes monomers having carboxyl, cyano, alkylene oxide, and/or sulfonic acid functionalities and at least a portion of the carboxyl groups are metal (e.g., lithium) carboxylate salts. Volume changes of the negative electrode material during charging/discharging may be suppressed or reduced and the capacity and lifespan characteristics of the lithium battery may be improved.
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5.发明授权公开(公告)号：US11682759B2
公开(公告)日：2023-06-20
申请号：US16850274
申请日：2020-04-16
发明人： Jungmin Lee , Jangwook Choi , Yunshik Cho , Jaemin Kim
CPC分类号： H01M4/366 , H01M4/133 , H01M4/483 , H01M4/60 , H01M10/0525 , H01M2004/027
摘要： An anode active material, an anode including the anode active material; and a lithium secondary battery including the anode, the anode active material including a core including a carbonaceous material; and a polycyclic compound on a surface of the core, the polycyclic compound being represented by Formula 1:
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公开(公告)号：US20220271290A1
公开(公告)日：2022-08-25
申请号：US17636640
申请日：2020-08-20
发明人： Jungmin Lee , Minjae Kim , Yuhyun Kim , Changbeom Kim , Jihye Park , Seunghyun Oh
IPC分类号： H01M4/60 , C08F212/08 , C08F236/10 , H01M4/62 , H01M10/0525
摘要： The present disclosure relates to an ion-conductive polymer, an electrode including the same, and a lithium secondary battery including the electrode. The ion-conductive polymer includes a first monomer represented by Formula 1 below. In Formula 1, A, L1 to L2, L11, a1 to a2, a11, R1 to R3, and n1 to n2 are as defined in the detailed description.
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