公开(公告)号：US20240363858A1

公开(公告)日：2024-10-31

申请号：US18767006

申请日：2024-07-09

申请人： CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

发明人： Miaomiao DONG ,  Shaocong OUYANG ,  Changfeng BIE ,  Hongyu LIU ,  Huan NI ,  Chenghua FU ,  Xin SUN

IPC分类号： H01M4/58 ,  H01M4/02 ,  H01M4/36 ,  H01M4/38 ,  H01M4/60 ,  H01M10/0525

CPC分类号： H01M4/5825 ,  H01M4/364 ,  H01M4/366 ,  H01M4/382 ,  H01M4/60 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2004/028

摘要： The present application provides a secondary battery, a battery module, a battery pack, and an electrical device. The secondary battery includes a positive electrode plate, a negative electrode plate, and a separator disposed between the positive electrode plate and the negative electrode plate, in which the positive electrode plate comprises a positive electrode coating containing a positive electrode active material comprising a lithium iron phosphate material and a conjugated carbonyl compound. In a discharge process of the secondary battery, in addition to a discharge plateau of the lithium iron phosphate material, a discharge curve further includes a relatively low discharge plateau provided by the conjugated carbonyl compound.

公开(公告)号：US20240363846A1

公开(公告)日：2024-10-31

申请号：US18645649

申请日：2024-04-25

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Hideaki Nishimura ,  Kazushige Nomoto

IPC分类号： H01M4/38 ,  H01M4/02 ,  H01M4/1395 ,  H01M4/62

CPC分类号： H01M4/386 ,  H01M4/1395 ,  H01M4/623 ,  H01M2004/027

摘要： Disclosed is a negative electrode mixture capable of improving cycle characteristics of a secondary battery. The negative electrode mixture of the present disclosure includes active material secondary particles and a sulfide solid electrolyte, wherein the active material secondary particles include a plurality of silicon particles and a polymer binding the silicon particles, and the polymer has a property of 0.37≤εA/εB (wherein εA is bending strain of molded body A, the molded body A is a molded body consisting of the polymer and the sulfide solid electrolyte and including 20% by volume of the polymer and having a filling ratio of 90%, εB is bending strain of molded body B, and the molded body B is a molded body consisting of the sulfide solid electrolyte and having a filling ratio of 90%).

公开(公告)号：US20240363845A1

公开(公告)日：2024-10-31

申请号：US18659916

申请日：2024-05-09

申请人： HYDRO-QUÉBEC ,  MURATA MANUFACTURING CO., LTD.

发明人： Charlotte MALLET ,  Jean-Christophe DAIGLE ,  Sylviane ROCHON ,  Karim ZAGHIB

IPC分类号： H01M4/38 ,  C08F8/12 ,  C08F212/14 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0567

CPC分类号： H01M4/38 ,  C08F8/12 ,  C08F212/20 ,  C08F212/22 ,  C08F212/24 ,  H01M4/622 ,  H01M4/623 ,  H01M10/0525 ,  H01M10/0567

摘要： Method of improving the performance of a Li-ion battery comprising metal-based cathode material which produces M2+ metal ions. The method comprises using a small organic compound in association with the electrolyte of the battery or using a polymer compound in association with the cathode active material of the battery. The small organic compound and the polymer compound comprise at least one chemical group suitable for forming complexes with the M2+ metal ions thereby preventing dissolution thereof.

公开(公告)号：US20240363835A1

公开(公告)日：2024-10-31

申请号：US18504987

申请日：2023-11-08

申请人： SAMSUNG SDI CO., LTD.

发明人： Kyunghwa JUNG ,  Kukjoo LEE ,  Jungmin LEE ,  Yunshik CHO ,  Minho CHO ,  Hana KIM

IPC分类号： H01M4/36 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/587 ,  H01M4/62 ,  H01M10/052

CPC分类号： H01M4/364 ,  H01M4/133 ,  H01M4/134 ,  H01M4/386 ,  H01M4/587 ,  H01M4/622 ,  H01M10/052 ,  H01M2004/027

摘要： A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The negative electrode includes a Si—C composite negative electrode active material and a binder, wherein the binder includes a first binder that is an acrylic copolymer. The acrylic copolymer includes a first acrylic acid monomer, a second acrylonitrile monomer, and a third (meth)acrylate monomer, the first acrylic acid monomer includes acrylic acid substituted with a lithium ion, and the third (meth)acrylate monomer is a (meth)acrylate monomer including an ethylene glycol group and has a weight average molecular weight (Mw) of less than about 900 g/mol.

公开(公告)号：US12132201B2

公开(公告)日：2024-10-29

申请号：US17263339

申请日：2019-07-10

申请人： KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

发明人： Takeshi Kondo ,  Tomokuni Abe ,  Keigo Oyaizu ,  Tomoyuki Tasaki ,  Hiroki Fujisawa

IPC分类号： H01M4/38 ,  H01M4/36 ,  H01M4/62 ,  H01M4/02

CPC分类号： H01M4/386 ,  H01M4/366 ,  H01M4/622 ,  H01M2004/027

摘要： A negative electrode using a binding agent excellent in binding property, the negative electrode being capable of using water as an alternative solvent to an organic solvent during production of the negative electrode. A negative electrode including: a compound obtained through condensation of polyacrylic acid and a polyaminobenzene derivative represented by general formula (1) below and/or a self-condensation product of the polyaminobenzene derivative; a cellulose derivative; and a negative electrode active material.

公开(公告)号：US12132200B2

公开(公告)日：2024-10-29

申请号：US17052037

申请日：2019-09-06

申请人： LG Energy Solution, Ltd.

发明人： Ju Ri Kim ,  Seok Koo Kim ,  Sun Kyu Kim ,  Young Sik Kim ,  Jooyong Song ,  Hyun Woo Kim ,  Young Jun Lim

IPC分类号： H01M4/505 ,  H01M4/04 ,  H01M4/36 ,  H01M4/38 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

CPC分类号： H01M4/382 ,  H01M4/0404 ,  H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028

摘要： The present disclosure provides a positive electrode for a secondary battery which includes a positive electrode active material and a lithium-based alloy. Also, the present disclosure provides a method of preparing the positive electrode for a secondary battery which includes the steps of forming a positive electrode material mixture layer including a positive electrode active material and forming a coating layer including a lithium-based alloy on the positive electrode material mixture layer, or forming a positive electrode material mixture layer by coating a positive electrode collector with a slurry for forming a positive electrode, which includes a positive electrode active material and a lithium-based alloy, and rolling the positive electrode collector.

公开(公告)号：US20240356093A1

公开(公告)日：2024-10-24

申请号：US18653761

申请日：2024-05-02

申请人： Enovix Corporation

发明人： Christopher G. Castledine ,  David T. Fouchard ,  Jonathan C. Doan ,  Christopher J. Spindt ,  Robert M. Spotnitz ,  James D. Wilcox ,  Ashok Lahiri ,  Murali Ramasubramanian

IPC分类号： H01M10/44 ,  H01M4/38 ,  H01M10/0525 ,  H01M10/48

CPC分类号： H01M10/448 ,  H01M4/386 ,  H01M10/0525 ,  H01M10/446 ,  H01M10/48

摘要： A method is provided for activating a secondary battery having a negative electrode, a positive electrode, and a microporous separator between the negative and positive electrodes permeated with carrier-ion containing electrolyte, the negative electrode having anodically active silicon or an alloy thereof. The method includes transferring carrier ions from the positive electrode to the negative electrode to at least partially charge the secondary battery, and transferring carrier ions from an auxiliary electrode to the positive electrode, to provide the secondary battery with a positive electrode end of discharge voltage Vpos,eod and a negative electrode end of discharge voltage Vneg,eod when the cell is at a predefined Vcell,eod value, the value of Vpos,eod corresponding to a voltage at which the state of charge of the positive electrode is at least 95% of its coulombic capacity and Vneg,eod is at least 0.4 V (vs Li) but less than 0.9 V (vs Li).

公开(公告)号：US20240356077A1

公开(公告)日：2024-10-24

申请号：US18758096

申请日：2024-06-28

申请人： Dongguan Amperex Technology Limited

发明人： Chunrui XU ,  Yanyan XU ,  Chao TANG

IPC分类号： H01M10/0567 ,  H01M4/02 ,  H01M4/38 ,  H01M10/0525

CPC分类号： H01M10/0567 ,  H01M4/38 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

摘要： An electrochemical device includes: a negative electrode; a positive electrode, where the positive electrode includes a current collector and a positive electrode active material layer provided on the current collector, the positive electrode active material layer includes a positive electrode active material, and the positive electrode has an active specific surface area of X m2/g; and an electrolyte, where the electrolyte contains an additive A, the additive A contains LiPO2F2, and a weight percentage of the LiPO2F2 is Y % based on a weight of the electrolyte, where 0.005≤X/Y≤2 is satisfied. The electrochemical device has higher cycling performance, storage performance, and overcharge performance, as well as lower impedance.

公开(公告)号：US20240356042A1

公开(公告)日：2024-10-24

申请号：US18645297

申请日：2024-04-24

申请人： Solid Power Operating, Inc.

发明人： Haitao HUANG ,  Ian A. MORRISSEY ,  Levi SCHUTT ,  Pu ZHANG

IPC分类号： H01M4/62 ,  H01M4/02 ,  H01M4/04 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/38

CPC分类号： H01M4/628 ,  H01M4/0404 ,  H01M4/1395 ,  H01M4/366 ,  H01M4/382 ,  H01M2004/021

摘要： Provided herein are compositions for solid-state electrochemical cells that include a first layer and a second layer which meet at an interface. Each layer includes a binder, wherein the binder concentration forms a continuous gradient across the interface. Further provided herein are methods of making the compositions.

公开(公告)号：US20240356008A1

公开(公告)日：2024-10-24

申请号：US18687966

申请日：2022-08-30

申请人： ENWIRES

发明人： Olga BURCHAK

IPC分类号： H01M4/36 ,  H01M4/02 ,  H01M4/04 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/587

CPC分类号： H01M4/364 ,  H01M4/0404 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/386 ,  H01M4/587 ,  H01M2004/021 ,  H01M2004/027

摘要： A method for the preparation of a carbon-silicon composite material including nanostructured silicon and carbon-based material suitable for use as anode active material in lithium-ion batteries, the method includes deposition of nano-silicon on the surface of a carbon-based material by a chemical vapor deposition method and spheroidization of the obtained composite material.