公开(公告)号：US20230317960A1

公开(公告)日：2023-10-05

申请号：US18003976

申请日：2021-08-26

Applicant: Samsung SDI Co., Ltd.

Inventor： Mihwa YANG ,  Junghyun NAM ,  Hyo-jung SONG ,  Hyejin YOON ,  Jinhee LEE

IPC: H01M4/62 ,  H01M4/587 ,  H01M10/052 ,  H01M4/133

CPC classification number: H01M4/628 ,  H01M4/587 ,  H01M10/052 ,  H01M4/133 ,  H01M2004/027

Abstract: The present invention relates to an electrode assembly for a lithium secondary battery and a lithium secondary battery including the same, the electrode assembly comprising: a current collector, a negative electrode comprising a negative electrode active material layer located on the current collector and an organic-inorganic composite layer integrated with the negative electrode active material layer, and a positive electrode, wherein the organic-inorganic composite layer comprises an organic layer and an inorganic layer.

公开(公告)号：US20230290958A1

公开(公告)日：2023-09-14

申请号：US18014019

申请日：2022-02-21

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jinhee LEE ,  Junghyun NAM ,  Hyo-jung SONG ,  Mihwa YANG ,  Hyejin YOON

IPC: H01M4/62 ,  H01M10/052

CPC classification number: H01M4/628 ,  H01M10/052

Abstract: The present invention relates to an electrode assembly for a lithium secondary battery, and a lithium secondary battery comprising same, the electrode assembly comprising a current collector, an anode comprising an anode active material layer located on the current collector and a functional layer integrated with the anode active material layer; and a cathode, wherein the functional layer includes at least one inorganic layer and the peel strength of the functional layer is 0.2 N/m or greater.

公开(公告)号：US20220069293A1

公开(公告)日：2022-03-03

申请号：US17445990

申请日：2021-08-26

Applicant: Samsung SDI Co., Ltd.

Inventor： Hyo-jung SONG ,  Jinhyon LEE

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/133 ,  H01M4/134 ,  H01M4/587 ,  H01M10/44 ,  H01M4/137 ,  H01M4/60

Abstract: An electrode assembly for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed. The electrode assembly for the rechargeable lithium battery includes: a negative electrode including a current collector; a negative active material layer; an organic-inorganic composite layer integrated with the negative active material layer, the negative active material layer including an organic layer and an inorganic layer; and a positive electrode, the negative active material layer including a first layer physically contacting the current collector, the first layer including a first carbon-based negative active material, and a second layer on the first layer, including a second carbon-based negative active material, wherein a DD value of the first layer is about 30% to about 90% of a DD value of the negative active material layer, and the DD values are defined by Equation 1. DD (Degree of Divergence)=(Ia/Itotal)*100   Equation 1

公开(公告)号：US20230246200A1

公开(公告)日：2023-08-03

申请号：US18159048

申请日：2023-01-24

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jinhee LEE ,  Hyo-jung SONG ,  Minjae KIM ,  Mihwa YANG ,  Kyoseon KOO ,  Jeunggi MOON ,  Duckjae YOU

IPC: H01M4/66 ,  H01M4/62

CPC classification number: H01M4/667 ,  H01M4/623

Abstract: An electrode including a current collector; an electrode active material layer on a surface of the current collector and including internal pores; an inner coating layer filled in the internal pores of the electrode active material layer and including an adhesive material; and an outer coating layer disposed on a surface of the electrode active material layer and including an adhesive material. A total weight of the inner coating layer and the outer coating layer per area of one surface of the current collector is about 0.1 g/m2 to about 0.7 g/m2. In addition, the electrode active material layer has a porosity of about 13% to about 16% in a cross section having a depth of about 20 μm from the surface of the electrode active material layer to the current collector.

公开(公告)号：US20230122856A1

公开(公告)日：2023-04-20

申请号：US17966593

申请日：2022-10-14

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Hyo-jung SONG ,  Kyoseon KOO ,  Minjae KIM ,  Junghyun NAM ,  Jeunggi MOON ,  Mihwa YANG ,  Duckjae YOU ,  Jinhee LEE

IPC: H01M10/0583 ,  H01M10/0525 ,  H01M50/46

Abstract: An electrode assembly and a rechargeable lithium battery including the same are disclosed herein. The electrode assembly includes an electrode and a separator, wherein the electrode includes a current collector, an electrode active material layer on the current collector, and an adhesive layer on the electrode active material layer; and wherein the separator has a larger surface area than the adhesive layer of the electrode; and a surface of the separator opposing the adhesive layer of the electrode is divided into an adhesive region in contact with the adhesive layer of the electrode and an overhang region not in contact with the adhesive layer of the electrode.

公开(公告)号：US20240162565A1

公开(公告)日：2024-05-16

申请号：US18229587

申请日：2023-08-02

Applicant: SAMSUNG SDI CO., LTD. ,  Industry-Academic Cooperation Foundation, Dankook University

Inventor： Duckjae YOU ,  Kyoseon KOO ,  Junghyun NAM ,  Jeunggi MOON ,  Hyo-jung SONG ,  Mihwa YANG ,  Hosung YANG ,  Jinhee LEE ,  Jinyoung JANG ,  Byoung-Sun LEE ,  Hyeji SHIN ,  Heeyeon KIM

IPC: H01M50/434 ,  H01M4/38 ,  H01M4/485 ,  H01M4/62 ,  H01M50/46

CPC classification number: H01M50/434 ,  H01M4/386 ,  H01M4/485 ,  H01M4/623 ,  H01M50/46 ,  H01M10/052

Abstract: A separator for a rechargeable lithium battery, negative electrode-separator assembly for a rechargeable lithium battery, and rechargeable lithium battery are provided. The separator includes a ceramic layer including ceramic particles and a binder, and a functional layer on the ceramic layer including inorganic particles having a working potential (vs Li/Li+) of greater than or equal to about 1 V and a binder.

公开(公告)号：US20200067078A1

公开(公告)日：2020-02-27

申请号：US16540590

申请日：2019-08-14

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Dong-Ho SON ,  Kijun KIM ,  Hyo-jung SONG ,  Suyoun YOON

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M10/0525

Abstract: Disclosed are a negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The negative active material has an N/P ratio, which is a ratio of a maximum capacity per a unit area of a negative active material relative to maximum capacity per a unit area of a positive active material, ranging from about 1.5 to about 2. The negative active material includes a composite particle of silicon (Si) and carbon and crystalline carbon. A content of the Si is about 3 wt % to about 15 wt % based on a total weight of the negative active material.

公开(公告)号：US20250149738A1

公开(公告)日：2025-05-08

申请号：US18823987

申请日：2024-09-04

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jungmin LEE ,  Kyunghwa JUNG ,  Kukjoo LEE ,  Hyo-jung SONG ,  Minho CHO ,  Yunshik CHO ,  Hana KIM

IPC: H01M50/451 ,  H01M4/02 ,  H01M4/133 ,  H01M4/36 ,  H01M4/587 ,  H01M4/62 ,  H01M10/052 ,  H01M50/434 ,  H01M50/44

Abstract: A negative electrode for a rechargeable lithium battery includes a current collector, a negative electrode active material layer on the current collector, and an organic-inorganic composite layer on the negative electrode active material layer and integrated with the negative electrode active material layer. The negative electrode active material layer includes a negative electrode active material and a first binder, the organic-inorganic composite layer includes a second binder, and the first binder and the second binder include a copolymer including a structural unit derived from a (meth)acrylonitrile monomer.

公开(公告)号：US20230122468A1

公开(公告)日：2023-04-20

申请号：US17963010

申请日：2022-10-10

Applicant: Samsung SDI Co., Ltd.

Inventor： Minjae KIM ,  Kyoseon KOO ,  Junghyun NAM ,  Jeunggi MOON ,  Hyo-jung SONG ,  Mihwa YANG ,  Duckjae YOU ,  Jinhee LEE ,  Sungsoo HAN

IPC: H01M4/62 ,  H01M4/133 ,  H01M4/134 ,  H01M4/587 ,  H01M4/38 ,  H01M4/36

Abstract: Disclosed are a negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same, the negative electrode including a current collector, a negative active material layer on the current collector, including a silicon-based negative active material, and an adhesive layer on the negative active material layer, wherein the adhesive layer has a thickness of about 5 μm or less, the adhesive layer has an area of about 50 area % based on the total area of the negative active material layer, and the adhesive layer is positioned in a dot pattern.