公开(公告)号：US20250070345A1

公开(公告)日：2025-02-27

申请号：US18722053

申请日：2022-12-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yasufumi Takahashi ,  Masanobu Takeuchi

IPC: H01M50/193 ,  H01M4/02 ,  H01M4/06 ,  H01M4/24 ,  H01M6/06 ,  H01M50/107

Abstract: An alkaline dry battery includes: a bottomed cylindrical case; a hollow cylindrical positive electrode inscribed in the case; a negative electrode filled in a hollow part of the positive electrode and including a negative electrode active material containing zinc; a separator disposed between the positive and negative electrodes; an alkaline electrolytic solution; and a sealing unit. The alkaline electrolytic solution is contained in the positive and negative electrodes, and the separator. The sealing unit covers an opening of the case and includes a negative electrode current collector, a portion of the negative electrode current collector being inserted into the negative electrode. An additive is packed in a gap between the negative electrode and the sealing unit. The additive includes a wax component having a melting point of 60° C. or more and 110° C. or less. The wax component being an aliphatic hydrocarbon compound and/or an ester compound.

公开(公告)号：US20250070262A1

公开(公告)日：2025-02-27

申请号：US18943072

申请日：2024-11-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Naoki SUZUKI ,  Nobuyoshi YASHIRO ,  Takanobu YAMADA ,  Yuichi AIHARA

IPC: H01M10/0585 ,  H01M4/02 ,  H01M4/133 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/42 ,  H01M10/44

Abstract: A method of charging an all-solid-state secondary battery, wherein when charging is performed an initial charge capacity of the anode active material layer is exceeded, and a metal layer can be deposited anywhere between the anode current collector and the solid electrolyte, and an initial charge capacity of the cathode active material layer is greater than an initial charge capacity of the anode active material layer. The all-solid-state secondary battery including: a cathode including a cathode active material layer; an anode including an anode current collector, and an anode active material layer on the anode current collector, wherein the anode active material layer includes a plurality of particles comprising amorphous carbon.

公开(公告)号：US20250070257A1

公开(公告)日：2025-02-27

申请号：US18941421

申请日：2024-11-08

Applicant: Ningde Amperex Technology Limited

Inventor： Chunrui XU

IPC: H01M10/0569 ,  H01M4/02 ,  H01M10/0567 ,  H01M10/0568 ,  H01M50/533

Abstract: An electrochemical apparatus includes a positive electrode plate and an electrolyte, where the positive electrode plate includes a positive tab, and a working length b of the positive tab is 0.5 m to 3 m; the electrolyte includes cyclic carbonate, where a mass percentage of the cyclic carbonate is a % based on a mass of the electrolyte, and the cyclic carbonate includes ethylene carbonate and/or propylene carbonate; and 13≤a/b≤110.

公开(公告)号：US20250070247A1

公开(公告)日：2025-02-27

申请号：US18723809

申请日：2022-12-14

Applicant: SYENSQO SA

Inventor： Marc-David Braida ,  Jong-Hyun Lee ,  Hyun-Cheol Lee ,  Ji-Hye Won

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

Abstract: The present invention pertains to a lithium secondary battery comprising a cathode comprising a lithium-manganese-rich layered oxide as a cathode electroactive material and a liquid electrolyte comprising at least one fluorinated acyclic carbonate. The present invention also relates to use of a liquid electrolyte comprising at least one fluorinated acyclic carbonate in a lithium secondary battery, for improving the cycling performance, comprising a cathode comprising a lithium-manganese-rich layered oxide as a cathode electroactive material according to the present invention.

公开(公告)号：US20250070245A1

公开(公告)日：2025-02-27

申请号：US18622931

申请日：2024-03-30

Applicant: Ningde Amperex Technology Limited

Inventor： Xin CAI ,  Hui CUI ,  Chao TANG

IPC: H01M10/0567 ,  H01M4/02 ,  H01M4/587 ,  H01M10/0525

Abstract: An electrolyte of the electrochemical apparatus includes a linear carboxylate compound and a dinitrile compound. Based on total mass of the electrolyte, a mass percentage a of the linear carboxylate compound is 20% to 70% and a mass percentage b of the dinitrile compound is 0.01% to 7%; a bonding force between a negative electrode active material layer and a negative electrode current collector of a negative electrode plate is peeling strength, where the peeling strength F measured in N/m is 5 N/m to 20 N/m; and the mass percentage a of the linear carboxylate compound, the mass percentage b of the dinitrile compound, and the peeling strength F satisfy a relation 0.14≤(100b+F)/100a≤1.35.

公开(公告)号：US20250070180A1

公开(公告)日：2025-02-27

申请号：US18942284

申请日：2024-11-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED

Inventor： Qi XING ,  Chengdong SUN ,  Huihui LIU ,  Lianwei DUAN

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/04 ,  H01M4/525 ,  H01M4/58 ,  H01M10/052

Abstract: A preparation method of a positive electrode slurry includes a first stirring, a second stirring, a third stirring and a fourth stirring. In the first stirring, a positive electrode active material, a conductive agent and a first binder are mixed and stirred to prepare a dry mixture. In the second stirring, a second binder and a solvent are mixed and stirred to prepare an adhesive solution. In the third stirring, the dry mixture and the adhesive solution are mixed and stirred to prepare a primary slurry. In the fourth stirring, a solvent and the primary slurry are mixed and stirred to prepare a positive electrode slurry. The weight average molecular weight of a polymer in the second binder is smaller than the weight average molecular weight of any polymer in the first binder.

公开(公告)号：US20250070177A1

公开(公告)日：2025-02-27

申请号：US18813934

申请日：2024-08-23

Applicant: LG Energy Solution, Ltd.

Inventor： Jegon Lee ,  Jiwon Jeong ,  Jegwon Lee ,  Minjune Kim ,  Qi Lu

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/133 ,  H01M10/0525 ,  H01M10/42

Abstract: An anode slurry composition includes: an anode active material; a conductive material; and two or more types of cellulose-based binders. The cellulose-based binders include carboxymethyl cellulose (CMC) and cellulose nanofibrils (CNF), and the weight ratio of the cellulose nanofibrils (CNF) to the carboxymethyl cellulose (CMC) in the cellulose-based binders (CNF/CMC) is in the range of about 0.05 to 3.00.

公开(公告)号：US20250070166A1

公开(公告)日：2025-02-27

申请号：US18943445

申请日：2024-11-11

Applicant: ZHEJIANG JINKO ENERGY STORAGE CO., LTD.

Inventor： Longhui LIAO ,  Zixiang YANG

IPC: H01M4/58 ,  H01M4/02 ,  H01M4/04 ,  H01M4/36 ,  H01M4/583 ,  H01M10/0569

Abstract: A Cathode material and a preparation method therefor and use thereof are provided. The cathode material includes a cathode active substrate, and a surface of the cathode active substrate is coated with a carbon coating layer, wherein a surface of the carbon coating layer has an esterophilic group. The invention changes the surface energy of the carbon coating layer by introducing the esterophilic carbonyl to the surface of the carbon coating layer of the cathode active substrate, thereby significantly improving the wettability of the cathode active particles to the electrolyte. Moreover, the bulk structure of the active material is not changed, so the electrochemical performance of the cathode active material is guaranteed. The cathode plate prepared by the invention shows excellent wettability in the electrolyte, and a prepared battery shows low internal resistance, high energy efficiency and other characteristics.

公开(公告)号：US20250070163A1

公开(公告)日：2025-02-27

申请号：US18724747

申请日：2023-10-26

Applicant: LG Energy Solution, Ltd.

Inventor： Dong Hyun Kim ,  Houng Sik Yoo ,  Jong Won Lee ,  Ji Hee Yoon ,  Gui Eum Yang ,  Sang Hoon Choy ,  Hyeon Choi ,  O Jong Kwon ,  Yong Hee Kang

IPC: H01M4/58 ,  H01M4/02 ,  H01M4/136 ,  H01M4/36 ,  H01M4/62 ,  H01M10/052

Abstract: A positive electrode includes a current collector, a first positive electrode active material layer, and a second positive electrode active material layer. The first positive electrode active material layer is formed on the current collector and the second positive electrode active material layer is formed on the first positive electrode active material layer. The first and second positive electrode active material layers each include lithium iron phosphate, a fluorine-based binder, a rubber-based binder, and a conductive material. The rubber-based binder includes a first hydrogenated nitrile butadiene rubber and a second hydrogenated nitrile butadiene rubber A ratio (P2/P1) of the weight P2 of fluorine contained in the second positive electrode active material layer to the weight P1 of fluorine contained in the first positive electrode active material layer is 1 or less.

公开(公告)号：US20250070154A1

公开(公告)日：2025-02-27

申请号：US18814141

申请日：2024-08-23

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Byungwuk KANG ,  Young-Ki KIM ,  Sungwook DOO ,  Sung Ho CHOO ,  Dowook JUN ,  Gwiwoon KANG ,  Jaeyong JEONG ,  Youngsun KONG ,  Jaesang YOON ,  Seok Mun KANG

IPC: H01M4/525 ,  C01G53/04 ,  H01M4/02 ,  H01M4/04 ,  H01M4/36 ,  H01M4/505 ,  H01M10/0525

Abstract: A positive electrode active material, a method of preparing the same, a positive electrode and a rechargeable lithium battery including the same are disclosed. The positive electrode active material includes core particles including a layered lithium nickel-manganese-based composite oxide, a first coating layer disposed on a surface of the core particles and containing Al, and a second coating layer disposed on the first coating layer and containing Mn.