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：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：US20230028390A1

公开(公告)日：2023-01-26

申请号：US17930714

申请日：2022-09-08

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Inoh CHA ,  Deok-Hyun KIM ,  Jinhee LEE

IPC: H01M4/66 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525

Abstract: A negative electrode for a lithium secondary battery comprises a current collector and a negative electrode active material layer formed on the current collector, wherein the negative electrode active material layer includes a first negative electrode active material and a first binder, and a second active material layer formed on the first active material layer and including a second negative electrode active material and a second binder, a content of the first binder is greater than that of the second binder, a loading level of the negative electrode active material layer is 10 mg/cm2 to 30 mg/cm2, a loading level of the first active material layer is 4 mg/cm2 to 25 mg/cm2, a loading level of the second active material layer is 4 mg/cm2 to 25 mg/cm2, and a loading level of the second active material layer is equal to or higher than that of the first active material 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：US20200335795A1

公开(公告)日：2020-10-22

申请号：US16753319

申请日：2018-08-27

Applicant: Samsung SDI Co., Ltd.

Inventor： Inoh CHA ,  Deok-Hyun KIM ,  Jinhee LEE

IPC: H01M4/66 ,  H01M4/62 ,  H01M4/36 ,  H01M10/0525

Abstract: The present invention relates to a negative electrode for a lithium secondary battery and a lithium secondary battery comprising the same. The negative electrode for a lithium secondary battery comprises a current collector and a negative electrode active material layer formed on the current collector, wherein the negative electrode active material layer includes a first negative electrode active material and a first binder, and a second active material layer formed on the first active material layer and including a second negative electrode active material and a second binder, a content of the first binder is greater than that of the second binder, a loading level of the negative electrode active material layer is 10 mg/cm2 to 30 mg/cm2, a loading level of the first active material layer is 4 mg/cm2 to 25 mg/cm2, a loading level of the second active material layer is 4 mg/cm2 to 25 mg/cm2, and a loading level of the second active material layer is equal to or higher than that of the first active material layer.

公开(公告)号：US20190252673A1

公开(公告)日：2019-08-15

申请号：US16240145

申请日：2019-01-04

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Inoh CHA ,  Jinhee LEE ,  Chaewoong CHO

IPC: H01M4/133 ,  H01M4/587 ,  H01M10/0525

CPC classification number: H01M4/133 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2004/021 ,  H01M2004/027

Abstract: A negative electrode for a rechargeable lithium battery includes a current collector and a negative active material layer disposed on the current collector. The negative active material layer includes a conductive material including a linear-shaped carbon-based material having an average length of about 40 μm to about 250 μm and a dot-shaped carbon-based material, and a negative active material. A mixing ratio of the conductive material and the negative active material is a weight ratio of about 0.1:99.9 to about 2.0:98.0.

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：US20220069343A1

公开(公告)日：2022-03-03

申请号：US17412589

申请日：2021-08-26

Applicant: SAMSUNG SDI CO., LTD. ,  INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITY

Inventor： Dongrak SOHN ,  Minsang SONG ,  Jungmin HAN ,  Younggyoon RYU ,  Kyulin LEE ,  Jeongdoo YI ,  Sangil HAN ,  Keesun SOHN ,  Sunggeun SHIM ,  Jinhee LEE

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M10/0585 ,  H01M4/36 ,  H01M4/587 ,  H01M4/38 ,  C01B17/22

Abstract: A sulfide solid electrolyte for all-solid secondary batteries, a method of preparing the same, and an all-solid secondary battery, the sulfide solid electrolyte including lithium, phosphorus, sulfur, and a halogen, wherein: the sulfide solid electrolyte has an argyrodite-type crystal structure, a ratio (I(29.0)/I(30.0) ratio) of a peak intensity at a 2θ of 29±0.1° to a peak intensity at a 2θ of 30±0.1° is 0.06 or less, the peak intensities being obtained by X-ray diffraction analysis of the sulfide solid electrolyte, and a ratio (I(27.1)/I(30.0) ratio) of a peak intensity at a 2θ of 27.1±0.1° to a peak intensity at a 2θ of 30±0.1° is 0.06 or less, the peak intensities being obtained by X-ray diffraction analysis of the sulfide solid electrolyte.

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.