公开(公告)号：US20240372089A1

公开(公告)日：2024-11-07

申请号：US18773371

申请日：2024-07-15

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Mihwa YANG ,  Moonju CHO ,  Minjae KIM ,  Beomkwon KIM

IPC: H01M4/525 ,  H01M4/02 ,  H01M4/505 ,  H01M10/0525

Abstract: A lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolyte located therebetween. The positive electrode active material includes a lithium cobalt-based active material and a lithium nickel cobalt-based active material, wherein the lithium cobalt-based active material is larger in size and amount than the lithium nickel cobalt-based active material, and the lithium nickel cobalt-based active material is a one-body positive electrode active material.

公开(公告)号：US20230051902A1

公开(公告)日：2023-02-16

申请号：US17790949

申请日：2021-01-07

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jungmin LEE ,  Minjae KIM ,  Seunghyun OH ,  Heeeun YOO ,  Kukjoo LEE

IPC: H01M4/525 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/505 ,  H01M50/417 ,  H01M10/42 ,  H01M4/58

Abstract: Provided is a lithium secondary battery comprising: a positive electrode including a positive electrode active material; a negative electrode including a negative electrode active material; and a first functional layer between the positive electrode and the negative electrode, wherein the first functional layer includes plate-like polyolefin particles having an average diameter of 1 μm to 8 μm, and the positive electrode includes a positive electrode active material layer including a positive electrode active material and a flame retardant, or has a stacked structure including a positive electrode active material layer and a second functional layer including a flame retardant.

公开(公告)号：US20210305561A1

公开(公告)日：2021-09-30

申请号：US17211650

申请日：2021-03-24

Applicant: Samsung SDI Co., Ltd.

Inventor： Mihwa YANG ,  Moonju CHO ,  Minjae KIM ,  Beomkwon KIM

IPC: H01M4/525 ,  H01M4/505 ,  H01M10/0525

Abstract: A lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolyte located therebetween. The positive electrode active material includes a lithium cobalt-based active material and a lithium nickel cobalt-based active material, wherein the lithium cobalt-based active material is larger in size and amount than the lithium nickel cobalt-based active material, and the lithium nickel cobalt-based active material is a one-body positive electrode active material.

公开(公告)号：US20240421313A1

公开(公告)日：2024-12-19

申请号：US18614371

申请日：2024-03-22

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Mihwa YANG ,  Minjae KIM ,  Jongheon SEOL

IPC: H01M4/62 ,  H01M4/02 ,  H01M10/052

Abstract: Disclosed are a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same. The positive electrode includes a positive electrode current collector and a positive electrode mixture layer on the positive electrode current collector, wherein the positive electrode mixture layer includes a positive electrode active material and a first binder, and the first binder is a hydrogenated nitrile butadiene rubber (HNBR) derivative.

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：US20180069229A1

公开(公告)日：2018-03-08

申请号：US15695503

申请日：2017-09-05

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Youngsan KO ,  Minjae KIM ,  Junsik LEE ,  Chaewoong CHO ,  Kijun KIM

IPC: H01M4/133 ,  H01M4/62 ,  H01M4/04 ,  H01M4/134 ,  H01M4/587

Abstract: An electrode for a rechargeable lithium battery includes a current collector, an electrode active material layer on at least one surface of the current collector, a carbon-based coating layer between the current collector and the electrode active material layer, the carbon-based coating layer being formed from a carbon-based slurry including a carbon-based material, a first binder, and a thickener. A content of the first binder is about 35 wt % to about 70 wt % based on the carbon-based coating layer.

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.

公开(公告)号：US20190123352A1

公开(公告)日：2019-04-25

申请号：US16158226

申请日：2018-10-11

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Youngsan KO ,  Minjae KIM ,  Kijun KIM ,  Duckhyun KIM ,  Jinhee KIM ,  Woonsuk JANG ,  Hyeoksu JANG

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

Abstract: An electrode for a rechargeable lithium battery includes a current collector and an active material layer on the current collector, the active material layer including an active material, carbon nanotubes, and nanocarbon, wherein the carbon nanotubes have an average length of about 40 μm to about 250 μm, and the nanocarbon has an average particle diameter of about 5 nm to about 100 nm.

公开(公告)号：US20250070147A1

公开(公告)日：2025-02-27

申请号：US18942087

申请日：2024-11-08

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jungmin LEE ,  Minjae KIM ,  Won-Gi AHN ,  Kukjoo LEE

IPC: H01M4/38 ,  H01M4/02 ,  H01M4/04 ,  H01M4/583 ,  H01M4/62 ,  H01M10/0525

Abstract: Disclosed herein is a negative electrode including a current collector, a first active material layer on the current collector, and a second active material layer on the first active material layer, wherein the first active material layer and the second active material layer each independently includes a silicon-based active material and a binder, and the binder includes a copolymer (A) and a copolymer (B), the copolymer (A) includes a unit (a−1) derived from a (meth)acrylic acid-based monomer and a unit (a−2) derived from a (meth)acrylonitrile monomer, and the copolymer (B) includes a unit (b−1) derived from an aromatic vinyl-based monomer and a unit (b−2) derived from an ethylenically unsaturated monomer that is at least one of an unsaturated carboxylic acid alkyl ester monomer, a (meth)acrylic acid-based monomer, an unsaturated carboxylic acid amide monomer, or a conjugated diene monomer, and a rechargeable lithium battery including the same.