公开(公告)号：US20160149186A1

公开(公告)日：2016-05-26

申请号：US14918366

申请日：2015-10-20

Applicant: Samsung SDI Co., Ltd.

Inventor： Hyungbae KIM ,  Jonghwan PARK ,  Byeonggyu CHO ,  Eungyeong LEE ,  Jinhyuk IN

IPC: H01M2/16 ,  H01M2/14

CPC classification number: H01M2/1686 ,  H01M2/145 ,  H01M2/1653 ,  H01M2/166 ,  H01M10/0525

Abstract: Provided are a separator having high heat resistance, a manufacturing method thereof and a secondary battery including the separator, which provides excellent dispersibility and reduced thermal shrinkage. The separator includes separator includes a porous base layer, and a coating layer formed on at least one surface of the base layer, wherein the coating layer includes inorganic particles and a binder, and the binder includes one selected from the group consisting of polyacrylic acid (PAA), polyacrylate or a mixture of polyacrylic acid (PAA) and polyacrylate, having a molecular weight of 100,000 to 1,000,000, as a first binder.

Abstract translation: 提供具有高耐热性的隔膜，其制造方法和包括隔膜的二次电池，其提供优异的分散性和降低的热收缩。 分离器包括分离器，其包括多孔基底层和形成在基底层的至少一个表面上的涂层，其中所述涂层包括无机颗粒和粘合剂，并且所述粘合剂包括选自聚丙烯酸（ PAA），聚丙烯酸酯或分子量为100,000〜1,000,000的聚丙烯酸（PAA）和聚丙烯酸酯的混合物作为第一粘合剂。

公开(公告)号：US20250140783A1

公开(公告)日：2025-05-01

申请号：US18622313

申请日：2024-03-29

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Hyeri EOM ,  Junkyu LEE ,  Hana YOO ,  Donghun LEE ,  Uisong DO ,  Wonhyung CHAE ,  Jinhyuk IN

IPC: H01M4/13 ,  H01M4/02 ,  H01M10/0585 ,  H01M50/46

Abstract: An electrode assembly includes: an oriented negative electrode, a non-oriented negative electrode, a positive electrode between the oriented negative electrode and the non-oriented negative electrode; and a separator between the positive electrode and the oriented negative electrode and between the positive electrode and non-oriented negative electrode, wherein the oriented negative electrode includes a first negative electrode active material including particles oriented in one direction and wherein the non-oriented negative electrode includes a second negative electrode active material including particles randomly oriented in one or more directions.

公开(公告)号：US20160149187A1

公开(公告)日：2016-05-26

申请号：US14918454

申请日：2015-10-20

Applicant: Samsung SDI Co., Ltd.

Inventor： Byeonggyu CHO ,  Hyungbae KIM ,  Eungyeong LEE ,  Jinhyuk IN ,  Jonghwan PARK

IPC: H01M2/16 ,  H01M2/14

CPC classification number: H01M2/1686 ,  H01M2/145 ,  H01M2/166

Abstract: Provided are a separator having high heat resistance, a manufacturing method thereof and a secondary battery including the separator. The separator includes a porous base layer, and a coating layer formed on at least one surface of the base layer. Here, the coating layer includes 5 wt % to 25 wt % of polyvinyl alcohol (PVA) or derivatives thereof as a first binder and 75 wt % to 95 wt % of polyacrylic acid (PAA) or derivatives thereof as a second binder.

Abstract translation: 提供具有高耐热性的隔膜，其制造方法和包括隔膜的二次电池。 分离器包括多孔基底层和形成在基底层的至少一个表面上的涂层。 这里，涂层包含作为第一粘合剂的5重量％至25重量％的聚乙烯醇（PVA）或其衍生物，作为第二粘合剂的包含75重量％至95重量％的聚丙烯酸（PAA）或其衍生物。

公开(公告)号：US20250118734A1

公开(公告)日：2025-04-10

申请号：US18672862

申请日：2024-05-23

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Uisong DO ,  Junkyu LEE ,  Donghun LEE ,  Hyeri EOM ,  Wonhyung CHAE ,  Jinhyuk IN ,  Min-young JEONG

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/38 ,  H01M4/583 ,  H01M10/052

Abstract: A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the negative electrode are provided. The negative electrode includes a first negative active material including a crystalline carbon negative active material, a second negative active material including a silicon-carbon composite; and a current collector between the first negative active material layer and the second negative active material layer.

公开(公告)号：US20250062315A1

公开(公告)日：2025-02-20

申请号：US18768821

申请日：2024-07-10

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Donghun LEE ,  Songyul OH ,  Hyeri EOM ,  Junkyu LEE ,  Jinhyuk IN ,  Soonsung SUH ,  Min-young JEONG ,  Uisong DO ,  Wonhyung CHAE

IPC: H01M4/133 ,  C09D5/00 ,  C09D5/24 ,  C09D7/61 ,  C09D109/06 ,  H01M4/02 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/42

Abstract: Disclosed are a negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same. The negative electrode includes a current collector; a negative active material layer, and an adhesive layer between the current collector and the negative active material and having a thickness of about 30 μm or less, wherein the adhesive layer comprises a carbon-based material at an amount of about 90 wt % or more based on the total 100 wt % of the adhesive layer.

公开(公告)号：US20250140777A1

公开(公告)日：2025-05-01

申请号：US18631321

申请日：2024-04-10

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jinhyuk IN ,  Soonsung SUH ,  Junkyu LEE ,  Uisong DO ,  Hyeri EOM ,  Dong Hun LEE ,  Min-young JEONG ,  Wonhyung CHAE

IPC: H01M4/04 ,  B05C5/02 ,  H01M4/139

Abstract: A method for manufacturing an electrode for a secondary battery, includes: ejecting, by an ejector, a first slurry and a second slurry at a variable ejection ratio that varies in response to control signals from a controller; coating, by a coater, the first slurry and the second slurry ejected at the variable ejection ratio onto a current collector in a longitudinal direction of the current collector; and drying, by a dryer, the first slurry and the second slurry coated onto the current collector.

公开(公告)号：US20240379962A1

公开(公告)日：2024-11-14

申请号：US18600395

申请日：2024-03-08

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Junkyu LEE ,  DongHun LEE ,  Hyeri EOM ,  Uisong DO ,  Wonhyung CHAE ,  Jinhyuk IN ,  Min-young JEONG ,  Kyunghwa JUNG

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/02

Abstract: A negative electrode for a rechargeable lithium battery includes a current collector, and a negative active material layer on the current collector and including a copolymer binder, a Si—C composite negative active material, and a crystalline carbon negative active material, wherein the copolymer binder includes a (meth)acrylic acid-based repeating unit and a (meth)acrylonitrile-based repeating unit, and a DD (Degree of Divergence) value defined by Equation 1 is about 30 or more. DD ⁡ ( Degree ⁢ of ⁢ Divergence ) = ( I a / I total ) * 100 Equation ⁢ 1 wherein, Ia is a sum of peak intensities at 2θ=42.4±0.2°, 43.4±0.2°, 44.6±0.2°, 77.5±0.2° measured by XRD utilizing a Cu Kα ray, and Itotal is a sum of peak intensities at 2θ=26.5±0.2°, 42.4±0.2°, 43.4±0.2°, 44.6±0.2°, 54.7±0.2°, 77.5±0.2° measured by XRD utilizing a Cu Kα ray.

公开(公告)号：US20240274802A1

公开(公告)日：2024-08-15

申请号：US18453790

申请日：2023-08-22

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Junkyu LEE ,  Hana YOO ,  Uisong DO ,  Jinhyuk IN ,  Hyeri EOM ,  DongHun LEE ,  Wonhyung CHAE

IPC: H01M4/36 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/587 ,  H01M10/052

CPC classification number: H01M4/366 ,  H01M4/133 ,  H01M4/134 ,  H01M4/364 ,  H01M4/386 ,  H01M4/587 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/027

Abstract: A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The negative electrode for the rechargeable lithium battery includes a current collector, a first negative active material layer on at least one surface of the current collector; and a second negative active material layer on the first negative active material layer, wherein the first negative active material layer is a non-oriented layer, the second negative active material layer is oriented layer, a DD (Degree of Divergence) value of the first negative active material layer and a DD value of the second negative active material layer have a relationship expressed in Equation 1 and the DD value is defined by Equation 2.