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1.发明公开
公开(公告)号：EP4195316A1
公开(公告)日：2023-06-14
申请号：EP22211546.1
申请日：2022-12-06
发明人： CHO, Yunshik , OH, Seunghyun , CHO, Minho , LEE, Kukjoo , JUNG, Kyunghwa , LEE, Jungmin
IPC分类号： H01M4/133 , H01M4/1393 , H01M4/62 , H01M10/0525
摘要： Disclosed is that a binder for a negative electrode of a rechargeable lithium battery, a negative electrode for a rechargeable lithium battery, and a rechargeable lithium battery including the same, and the binder including a copolymer of a styrene-based monomer and an acrylate-based monomer, wherein a mole ratio of the styrene-based monomer and the acrylate-based monomer is about 1:1 to about 1:3.
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2.发明公开
公开(公告)号：EP4456173A1
公开(公告)日：2024-10-30
申请号：EP24162505.2
申请日：2024-03-08
发明人： JUNG, Kyunghwa , LEE, Kukjoo , LEE, Jungmin , CHO, Yunshik , CHO, Minho , KIM, Hana
IPC分类号： H01M4/133 , C08F220/06 , C08F220/46 , H01M4/134 , H01M4/36 , H01M4/38 , H01M4/62 , H01M10/0525 , H01M4/02
摘要： A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The negative electrode includes a SiC composite negative electrode active material and a binder, wherein the binder includes a first binder that is an acrylic copolymer. The acrylic copolymer includes a first acrylic acid monomer, a second acrylonitrile monomer, and a third (meth)acrylate monomer, the first acrylic acid monomer includes acrylic acid substituted with a lithium ion, and the third (meth)acrylate monomer is a (meth)acrylate monomer including an ethylene glycol group and has a weight average molecular weight (Mw) of less than about 900 g/mol.
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公开(公告)号：EP4439734A1
公开(公告)日：2024-10-02
申请号：EP24164000.2
申请日：2024-03-15
发明人： LEE, Kukjoo , CHO, Yunshik , OH, Seunghyun , CHO, Minho , JUNG, Kyunghwa , LEE, Jungmin
CPC分类号： H01M2004/02620130101 , H01M4/134 , H01M4/38 , H01M4/386 , H01M2004/02120130101 , H01M4/622 , H01M4/625 , H01M10/0525 , H01M4/133 , H01M4/364 , H01M4/661 , H01M4/667
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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4.发明公开
公开(公告)号：EP3792995A1
公开(公告)日：2021-03-17
申请号：EP19799645.7
申请日：2019-03-27
发明人： JANG, Jungsue , LEE, Byungmin , KIM, Hana , PARK, Myungkook , YANG, Seung Rim , JUNG, Bokyung , CHO, Minho
IPC分类号： H01M2/16 , H01M2/14 , H01M10/052
摘要： Disclosed are a separator for a lithium secondary battery, a method for manufacturing a separator for a lithium secondary battery, and a lithium secondary battery including same, the separator including: a porous substrate; a heat resistant layer on at least one surface of the porous substrate and including inorganic particles; and a first adhesive layer on the heat resistant layer and including a first organic polymer, wherein the heat resistant layer includes 90 wt% to 99 wt% of the inorganic particles relative to the total weight, a thickness of the heat resistant layer is 3.5 µm to 7 µm, and a thickness of the first adhesive layer is 0.5 µm to 3.0 µm.
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