公开(公告)号：US20240339617A1

公开(公告)日：2024-10-10

申请号：US18627711

申请日：2024-04-05

Applicant: Ningde Amperex Technology Limited

Inventor： Weidong WANG

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/13 ,  H01M4/133 ,  H01M4/36 ,  H01M4/48 ,  H01M4/587 ,  H01M10/0525 ,  H01M50/119

CPC classification number: H01M4/622 ,  H01M4/13 ,  H01M4/133 ,  H01M4/364 ,  H01M4/483 ,  H01M4/587 ,  H01M10/0525 ,  H01M50/119 ,  H01M2004/027

Abstract: A secondary battery includes a metal housing and an electrode assembly arranged inside the metal housing. The electrode assembly includes a negative electrode. The negative electrode includes a negative electrode material layer. The negative electrode material layer includes a binder. The binder includes a first binder and a second binder, where the first binder is selected from styrene-butadiene rubber polymers and the second binder is selected from polyacrylic acid polymers. A weight-average molecular weight of the first binder is 40,000 to 300,000, and a weight-average molecular weight of the second binder is 400,000 to 2,000,000. A mass percentage of the first binder is 10% to 90% based on a mass of the binder.

公开(公告)号：US20240339615A1

公开(公告)日：2024-10-10

申请号：US18573867

申请日：2022-10-20

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Su Jin PARK ,  Yohan KWON ,  Jaewook LEE ,  Jisu KANG ,  Soojin PARK ,  Hye Bin SON

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/13 ,  H01M4/48 ,  H01M10/052

CPC classification number: H01M4/622 ,  H01M4/13 ,  H01M4/48 ,  H01M4/625 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/027

Abstract: A negative electrode composition, a negative electrode for a lithium secondary battery, including the same, a lithium secondary battery including the negative electrode, and a method for preparing a negative electrode composition are disclosed. The negative electrode composition including a silicon-containing active material; a first negative electrode conductive material; and a negative electrode binder. The negative electrode binder has a composite structure wherein the first negative electrode conductive material is bonded to a surface of the negative electrode binder. The bond is a bond formed by a radical polymerization reaction. The negative electrode binder has a modulus of 1×103 MPa or more and 1×104 MPa or less at 25° C. The silicon-containing active material is present in an amount ranging from 60 parts by weight or more based on 100 parts by weight of the negative electrode composition.

公开(公告)号：US20240339587A1

公开(公告)日：2024-10-10

申请号：US18623039

申请日：2024-04-01

Applicant: SK On Co., Ltd.

Inventor： Jae Sik SHIN

IPC: H01M4/13 ,  H01M50/531

CPC classification number: H01M4/13 ,  H01M50/531

Abstract: Provided is a secondary battery cell comprising: a casing; and an electrode assembly accommodated in the casing and having electrode plates stacked with a separator interposed therebetween, wherein the electrode plate and the separator are adhered to each other by a coating layer, the electrode plate includes an electrode uncoated portion on which an active material is not applied to a portion of the electrode plate, and an electrode current collector to which an active material is applied, and the coating layer includes a first coating layer formed on the electrode uncoated portion.

公开(公告)号：US20240332633A1

公开(公告)日：2024-10-03

申请号：US18737839

申请日：2024-06-07

Applicant: Sakuu Corporation

Inventor： Steven Zhichao SHI ,  Philip Eugene ROGREN

IPC: H01M10/0585 ,  B29C64/106 ,  B33Y80/00 ,  H01M4/02 ,  H01M4/04 ,  H01M4/13 ,  H01M4/139 ,  H01M4/62 ,  H01M4/64 ,  H01M4/66 ,  H01M10/052 ,  H01M10/0562 ,  H01M50/112 ,  H01M50/117 ,  H01M50/183 ,  H01M50/30

CPC classification number: H01M10/0585 ,  B29C64/106 ,  B33Y80/00 ,  H01M4/0402 ,  H01M4/0416 ,  H01M4/0471 ,  H01M4/13 ,  H01M4/139 ,  H01M4/62 ,  H01M4/624 ,  H01M4/625 ,  H01M4/626 ,  H01M4/64 ,  H01M4/661 ,  H01M4/663 ,  H01M4/664 ,  H01M4/666 ,  H01M10/052 ,  H01M10/0562 ,  H01M50/117 ,  H01M50/183 ,  H01M50/30 ,  H01M50/394 ,  H01M2004/021 ,  H01M2004/024 ,  H01M4/043 ,  H01M50/112 ,  H01M2300/0068

Abstract: An electrochemical cell is provided, which includes a cathode comprising a three dimensional (3D) porous cathode structure, an anode, an electrolyte separator, comprised of a ceramic material, located between the cathode and the anode, and a cathode current collector, wherein the cathode is located between the cathode current collector and the electrolyte separator. The 3D porous cathode structure includes ionically conducting electrolyte strands extending through the cathode from the cathode current collector to the electrolyte separator, pores extending through the cathode from the cathode current collector to the electrolyte separator, and an electronically conducting network extending on sidewall surfaces of the pores from the cathode current collector to the electrolyte separator.

公开(公告)号：US20240332496A1

公开(公告)日：2024-10-03

申请号：US18744164

申请日：2024-06-14

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Taek Gyoung KIM ,  Joo Hyeong LEE ,  Kyung Oh KIM ,  Doo Kyung YANG

IPC: H01M4/13 ,  H01M4/02 ,  H01M4/38 ,  H01M4/62 ,  H01M10/052

CPC classification number: H01M4/13 ,  H01M4/38 ,  H01M4/382 ,  H01M4/622 ,  H01M10/052 ,  H01M2004/028 ,  H01M2300/0082

Abstract: A binder, an electrode and a lithium secondary battery comprising the same are described, wherein the binder includes a first block including a polymer containing functional groups substitutable with lithium ions and a second block. The second block may include a polymer containing oxygen atoms in the main chain. With such a binder, it is possible to prevent the agglomeration of the slurry for preparing the electrode, thereby preventing the occurrence of cracks on the surface of the electrode and improving the life characteristics of the lithium secondary battery.

公开(公告)号：US12107221B2

公开(公告)日：2024-10-01

申请号：US18626877

申请日：2024-04-04

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Kefei Wang ,  Qiao Zeng ,  Liangzhen Xiao ,  Fei Wu

IPC: H01M10/0566 ,  H01M4/13 ,  H01M4/64 ,  H01M4/70 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569

CPC classification number: H01M10/0566 ,  H01M4/13 ,  H01M4/64 ,  H01M4/70 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2300/0025 ,  H01M2300/0034 ,  H01M2300/0037

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2 wt %

公开(公告)号：US20240322175A1

公开(公告)日：2024-09-26

申请号：US18574124

申请日：2022-07-20

Applicant: NIPPON PAPER INDUSTRIES CO., LTD.

Inventor： Takayuki SAKAJIRI ,  Kazuhiko INOUE ,  Daisuke NISHIDE

IPC: H01M4/62 ,  C08L1/28 ,  H01M4/13 ,  H01M4/48

CPC classification number: H01M4/622 ,  C08L1/286 ,  H01M4/13 ,  H01M4/483

Abstract: This non-aqueous electrolyte secondary cell electrode binder includes at least: a carboxymethyl cellulose which has a carboxymethyl substitution degree per anhydroglucose unit of 0.5-1.2, and a 1 mass % aqueous solution viscosity, measured by a B-type viscometer (30 rpm) at 25° C., of 1,000-20,000 Pa·s and/or a salt thereof; and a borate. The non-aqueous electrolyte secondary cell electrode binder preferably includes the borate in the range of 0.1-20 mass % with respect to 100 mass % of the solid content of the carboxymethyl cellulose or salt thereof.

公开(公告)号：US12080891B2

公开(公告)日：2024-09-03

申请号：US17267253

申请日：2019-02-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takahiro Takahashi ,  Kohei Saito

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/13 ,  H01M10/0525

CPC classification number: H01M4/62 ,  H01M4/13 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

Abstract: A positive electrode for a secondary battery which is an example of the embodiment of the present invention comprises a collector, a protective layer formed on at least one surface of the collector, and a composite material layer formed on the protective layer. The protective layer has a first region and a second region. The first region includes inorganic particles and a conductive material. The second region includes inorganic particles and substantially does not include a conductive material, or includes inorganic particles and a conductive material, the content of the conductive material being less than the content of the conductive material in the first region.

公开(公告)号：US20240291021A1

公开(公告)日：2024-08-29

申请号：US18572157

申请日：2022-12-08

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Jung Pil LEE ,  Hyeaeun HAN ,  Dong Kyu KIM ,  Sunwook HWANG

IPC: H01M10/056 ,  C08K3/105 ,  C08K5/00 ,  C09D5/24 ,  C09D165/00 ,  C09D179/04 ,  H01M4/13 ,  H01M4/62

CPC classification number: H01M10/056 ,  C09D5/24 ,  C09D165/00 ,  C09D179/04 ,  H01M4/13 ,  H01M4/62 ,  C08K3/105 ,  C08K5/0091 ,  C08K2201/001 ,  H01M2300/0065 ,  H01M2300/0091

Abstract: A solid electrolyte and a method for preparing the same are provided. The solid electrolyte includes a conducting polymer having mixed conducting characteristics; and a lithium salt, and the mixed conducting characteristics include ionic conductivity and electrical conductivity.

公开(公告)号：US20240283029A1

公开(公告)日：2024-08-22

申请号：US18645936

申请日：2024-04-25

Applicant: Dongguan Amperex Technology Limited

Inventor： Hui CUI ,  Jian LIU ,  Chao TANG

IPC: H01M10/0569 ,  H01M4/02 ,  H01M4/13 ,  H01M10/0525 ,  H01M10/0567

CPC classification number: H01M10/0569 ,  H01M4/13 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2300/004

Abstract: An electrochemical device includes a positive electrode, a negative electrode, and an electrolytic solution. The electrolytic solution includes an organic solvent, a lithium salt, and an additive. The organic solvent includes an acetate compound and a carbonate compound. The carbonate compound includes ethylene carbonate and propylene carbonate. Based on a total mass of the electrolytic solution, a mass percent of the acetate compound is 4% to 50%, and a mass percent of the ethylene carbonate is 5% to 20%.