公开(公告)号：US20240266607A1

公开(公告)日：2024-08-08

申请号：US18622242

申请日：2024-03-29

Applicant: Ningde Amperex Technology Limited

Inventor： Jianyu LIU ,  Chao TANG

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569

CPC classification number: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2300/004

Abstract: An electrochemical device includes a positive electrode, a negative electrode, a separator, and an electrolytic solution. The electrolytic solution includes fluoroethylene carbonate and a trinitrile compound. Based on a mass of the electrolytic solution, a mass percent of the fluoroethylene carbonate is A %, 2≤A≤6, a mass percent of the trinitrile compound is B %, 2≤B≤5, and A and B satisfy: 4≤A×B≤20. A defect rate of the negative electrode is denoted by an Id/Ig ratio, and satisfies: 0.07

公开(公告)号：US20240243361A1

公开(公告)日：2024-07-18

申请号：US18622184

申请日：2024-03-29

Applicant: Ningde Amperex Technology Limited

Inventor： Wenwen LI ,  Chao TANG

IPC: H01M10/0567 ,  H01M10/0525

CPC classification number: H01M10/0567 ,  H01M10/0525 ,  H01M2300/004

Abstract: An electrochemical device and an electronic device. The electrochemical device includes a positive electrode plate, a negative electrode plate, an electrolyte solution, and a separator. A mass percent A of the electrolyte solution in a total mass of a battery cell is 2% to 8%. The electrolyte solution includes a sulfur-containing substance with a valence of S4+/S6+ or above. Based on a total mass of the electrolyte solution, a mass percent B of the sulfur-containing substance is 10% to 20%. By controlling the mass percent of the electrolyte solution and the use of the sulfur-containing substance and the fluorine-containing additive, the ionic conductivity of the SEI film is improved, and consumption of the electrolyte solution during cycling is reduced, thereby enhancing safety performance and cycle performance while reducing the electrolyte volume.

公开(公告)号：US12021194B2

公开(公告)日：2024-06-25

申请号：US17959828

申请日：2022-10-04

Applicant: Enevate Corporation

Inventor： Liwen Ji ,  Benjamin Yong Park

IPC: H01M10/0567 ,  H01M4/134 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/02

CPC classification number: H01M10/0567 ,  H01M4/134 ,  H01M4/386 ,  H01M4/621 ,  H01M4/625 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2004/027 ,  H01M2300/0028 ,  H01M2300/0034 ,  H01M2300/0037 ,  H01M2300/004

Abstract: Electrolytes and electrolyte additives for energy storage devices comprising benzoyl peroxide based compounds are disclosed. The energy storage device comprises a first electrode and a second electrode, wherein at least one of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, an electrolyte comprising at least two electrolyte co-solvents, wherein at least one electrolyte co-solvent comprises a benzoyl peroxide based compound.

公开(公告)号：US20240186577A1

公开(公告)日：2024-06-06

申请号：US18481158

申请日：2023-10-04

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Sangwoo Park ,  Wonseok Cho ,  Sanghyung Kim ,  Pavel SHATUNOV ,  Olga TSAY ,  Myungheui Woo ,  Hyejin Park ,  Sanghoon Kim ,  Bokyung Ryu

IPC: H01M10/0567 ,  C07F9/6578 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569

CPC classification number: H01M10/0567 ,  C07F9/6578 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/004

Abstract: An electrolyte for a lithium secondary battery and a lithium secondary battery including the same are provided. The electrolyte may include a lithium salt, an organic solvent, and an additives (e.g., sulfolane, cyclic phosphate, cyclic phosphite) that form a cathode electrolyte interface film to protect the surface of a positive electrode. Utilization of the additives may improve cycle-life characteristics and suppress or reduce increases to resistance during high-temperature storage of the lithium secondary battery.

公开(公告)号：US20240055663A1

公开(公告)日：2024-02-15

申请号：US18491292

申请日：2023-10-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chang PENG ,  Peipei CHEN ,  Limei ZHANG ,  Degui WU

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M10/0568 ,  H01M10/0525 ,  C07D327/04

CPC classification number: H01M10/0567 ,  H01M10/0569 ,  H01M10/0568 ,  H01M10/0525 ,  C07D327/04 ,  H01M2220/20 ,  H01M2300/004

Abstract: The present disclosure relates to an electrolytic solution for a lithium-ion secondary battery including a solvent, additive, and lithium salt. The solvent includes carboxylic ester, and the additive includes fluorosulfonic acid lactone of Formula I in the description. In the electrolytic solution, a content W of carboxylic ester and a content a of fluorosulfonic acid lactone of Formula I satisfy 430.1>1000*a/W>0.163, optionally 202.02>1000*a/w≥1.635, and further optionally 100.059≥1000*a/w≥4.915, where a and W are both in wt % based on a weight of the electrolytic solution. The secondary battery containing the electrolytic solution has excellent quick charging performance and a long cycle life.

公开(公告)号：US20230395851A1

公开(公告)日：2023-12-07

申请号：US18028373

申请日：2021-03-11

Applicant: NOHMS Technologies, Inc.

Inventor： Surya S. Moganty ,  Rutvik Vaidya ,  Gabriel Torres ,  John Sinicropi ,  Yue Wu ,  Kevin Brown, Jr.

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M10/0568 ,  H01M10/0525 ,  C07F9/173

CPC classification number: H01M10/0567 ,  H01M10/0569 ,  H01M10/0568 ,  H01M10/0525 ,  C07F9/173 ,  H01M2300/004

Abstract: The present disclosure relates to a phosphorus additive that is useful for stable cycling and storage of lithium ion cells at high temperatures, an electrolyte containing the phosphorus additive, and an electrochemical energy storage device containing the electrolyte. An electrolyte includes an aprotic organic solvent system; a metal salt; and at least one thiophosphate additive having an unsaturated terminal group, according to the formula:

公开(公告)号：US11824181B2

公开(公告)日：2023-11-21

申请号：US16627582

申请日：2018-07-02

Applicant: ARLANXEO DEUTSCHLAND GMBH

Inventor： Karola Schneiders

IPC: H01M4/136 ,  H01M4/04 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0562

CPC classification number: H01M4/0402 ,  H01M4/622 ,  H01M10/0525 ,  H01M10/0562 ,  H01M2300/004 ,  H01M2300/0068

Abstract: The present disclosure relates to an all-solid-state lithium-ion battery produced by applying onto a substrate a slurry in which an active material, a conductive material, a sulfide-based solid-state electrolyte, a binder and a solvent are mixed, characterized in that the binder is a hydrogenated acrylate-nitrile-butadiene rubber (H-ANBR) which comprises remaining double bonds in an amount of more than 0% and not more than 5.5% based on the total amount of the H-ANBR.

公开(公告)号：US20230344004A1

公开(公告)日：2023-10-26

申请号：US18013824

申请日：2021-12-06

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Dahyun KIM ,  Minseo KIM ,  Sanghyung KIM ,  Sanghoon KIM ,  Hyejin PARK ,  Myungheui WOO ,  Bokyung RYU ,  Tae Jin LEE ,  Wonseok CHO

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M10/0525

CPC classification number: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2300/004

Abstract: Provided are an electrolyte for a rechargeable lithium battery and a rechargeable lithium battery including same, the electrolyte including a nonaqueous organic solvent, a lithium salt, and an additive, wherein the additive is a composition comprising a first compound represented by Chemical Formula 1 and a second compound represented by Chemical Formula 2.
The details of Chemical Formulas 1 and 2 are as set forth in the specification.

公开(公告)号：US20230268554A1

公开(公告)日：2023-08-24

申请号：US18311204

申请日：2023-05-02

Applicant: Novonix Battery Technology Solutions Inc.

Inventor： Stephen Laurence Glazier ,  Yadong Huang ,  John Christopher Burns ,  Mark Albert McArthur ,  Kenneth George Broom

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/505 ,  H01M4/131

CPC classification number: H01M10/0567 ,  H01M10/0569 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/505 ,  H01M4/131 ,  H01M2300/004

Abstract: Additive mixtures for nonaqueous battery electrolytes have been discovered that provide for improved performance, and particularly for improved lifetime (cycle life and stability) in high voltage, rechargeable lithium ion batteries. The battery electrolytes comprise less than 10% by weight of an additive mixture comprising an additive solvent, a sulfur containing compound, and lithium difluorophosphate.

公开(公告)号：US11699781B2

公开(公告)日：2023-07-11

申请号：US17117256

申请日：2020-12-10

Applicant: HYDRO-QUÉBEC

Inventor： Karim Zaghib ,  Michel Armand ,  Abdelbast Guerfi ,  Michel Perrier ,  Elisabeth Dupuis ,  Patrick Charest

IPC: H01M4/00 ,  H01M4/04 ,  H01G11/42 ,  H01G11/46 ,  H01G11/86 ,  H01M4/139 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/1397 ,  H01M4/36 ,  H01M4/58 ,  H01M4/62 ,  H01M10/0569 ,  H01G11/06 ,  H01G11/24 ,  H01G11/28 ,  H01G11/30 ,  H01G11/32 ,  H01M50/42 ,  H01M50/426 ,  H01M50/417 ,  H01M50/491 ,  H01M50/406 ,  H01M4/133 ,  H01M4/136 ,  H01M4/587 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/0565 ,  H01M10/0568 ,  H01M4/02

CPC classification number: H01M4/0404 ,  H01G11/06 ,  H01G11/24 ,  H01G11/28 ,  H01G11/30 ,  H01G11/32 ,  H01G11/42 ,  H01G11/46 ,  H01G11/86 ,  H01M4/04 ,  H01M4/0409 ,  H01M4/0471 ,  H01M4/133 ,  H01M4/136 ,  H01M4/139 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/1397 ,  H01M4/366 ,  H01M4/587 ,  H01M4/5825 ,  H01M4/621 ,  H01M4/622 ,  H01M4/623 ,  H01M4/625 ,  H01M4/66 ,  H01M4/661 ,  H01M10/0525 ,  H01M10/0565 ,  H01M10/0568 ,  H01M10/0569 ,  H01M50/406 ,  H01M50/417 ,  H01M50/42 ,  H01M50/426 ,  H01M50/491 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2300/004 ,  H01M2300/0028 ,  H01M2300/0037 ,  H01M2300/0042 ,  H01M2300/0082 ,  Y02E60/10 ,  Y02E60/13 ,  Y02P70/50

Abstract: A method of preparing an electrochemical electrode which is partially or totally covered with a film that is obtained by spreading an aqueous solution comprising a water-soluble binder over the electrode and subsequently drying same. The production cost of the electrodes thus obtained is reduced and the surface porosity thereof is associated with desirable resistance values.