公开(公告)号：US20240363827A1

公开(公告)日：2024-10-31

申请号：US18640318

申请日：2024-04-19

申请人： National Taiwan University of Science and Technology

发明人： Bing-Joe Hwang ,  Misganaw Adigo Weret ,  Sheng-Chiang Yang ,  Wei-Nien Su

IPC分类号： H01M4/04 ,  H01M4/02 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/36 ,  H01M50/491

CPC分类号： H01M4/0404 ,  H01M4/0452 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/366 ,  H01M2004/027 ,  H01M2004/028 ,  H01M50/491

摘要： A method for increasing the cycle life of an electrochemical device comprises the steps of: providing an electrochemical device comprising a positive electrode, a negative electrode, and a separator, the negative electrode being at least partially or entirely coated with a lithiophilic metal, a metalloid, and/or an alloy layer thereof; charging the electrochemical device, the positive electrode generating a polysulfide shuttling through the separator to the negative electrode and oxidizes the inactive lithium into the active lithium. This method protects the negative electrode current collector from generating copper sulfide, inhibiting the generation of lithium sulfide, allowing the sulfur to continuously participate in the charging and discharging and depositing dense lithium metal, thereby increasing the cycle life of the battery and maintaining its electrical properties.

公开(公告)号：US20240356085A1

公开(公告)日：2024-10-24

申请号：US18554190

申请日：2022-03-28

申请人： VOLTA Structural Energy srl

发明人： Gabriele CONSIGLIO

IPC分类号： H01M10/058 ,  H01M4/131 ,  H01M4/136 ,  H01M50/14 ,  H01M50/207 ,  H01M50/531

CPC分类号： H01M10/058 ,  H01M4/131 ,  H01M4/136 ,  H01M50/14 ,  H01M50/207 ,  H01M50/531

摘要： An electrochemical cell includes two external plates which are mutually parallel and spaced apart and each including a second electrode extending along a expansion plane defining an internal surface of each external plate, and a connective element capable of mutually connecting the internal surfaces of the external plates including at least one honeycomb structure defined by a plurality of walls extending parallel to a first expansion direction and together making a first electrode having high stiffness parallel to the expansion direction and deformable perpendicularly to the expansion direction, and in which each second electrode is transverse to the first expansion direction, and in which the external plates and the connective element define a sandwich panel capable of absorbing mechanical energy in case of impact at least along the expansion direction and of carrying out loading and unloading processes without deformation.

公开(公告)号：US20240356066A1

公开(公告)日：2024-10-24

申请号：US18685126

申请日：2022-07-28

申请人： TAIYO YUDEN CO., LTD.

发明人： Katsunori YOKOSHIMA ,  Masashi SEKIGUCHI ,  Daigo ITO

IPC分类号： H01M10/0562 ,  H01M4/02 ,  H01M4/136 ,  H01M4/58 ,  H01M4/62 ,  H01M10/0585 ,  H01M10/42

CPC分类号： H01M10/0562 ,  H01M4/136 ,  H01M4/5825 ,  H01M4/62 ,  H01M10/0585 ,  H01M10/4235 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2300/0068

摘要： An all solid battery includes a solid electrolyte layer of a phosphate-based material having a NASICON structure, a positive electrode layer that includes a Co-containing phosphate-based positive electrode active material and a Co-containing phosphate-based solid electrolyte, and a negative electrode layer that includes a negative electrode active material and a solid electrolyte not containing Co.

公开(公告)号：US20240356062A1

公开(公告)日：2024-10-24

申请号：US18683549

申请日：2022-08-16

申请人： NORTHWESTERN UNIVERSITY

发明人： Mark C. Hersam ,  Kyu-Young Park

IPC分类号： H01M10/0525 ,  H01M4/02 ,  H01M4/04 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/136 ,  H01M4/139 ,  H01M4/1393 ,  H01M4/505 ,  H01M4/62

CPC分类号： H01M10/0525 ,  H01M4/0416 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/136 ,  H01M4/139 ,  H01M4/1393 ,  H01M4/505 ,  H01M4/625 ,  H01M2004/027 ,  H01M2004/028

摘要： A composite for improving electrochemical stability of an electrochemical device, comprises graphene; and an electrode active material having microscale particles. Said microscale particles are conformally coated by said graphene.

公开(公告)号：US20240332539A1

公开(公告)日：2024-10-03

申请号：US18575946

申请日：2022-10-24

申请人： LG Chem, Ltd.

发明人： Min-Soo Kim ,  Jung-Hyun Seo ,  Soon-Hwa Jung

IPC分类号： H01M4/66 ,  H01M4/02 ,  H01M4/136 ,  H01M4/58 ,  H01M4/62 ,  H01M10/0525

CPC分类号： H01M4/667 ,  H01M4/136 ,  H01M4/5825 ,  H01M4/623 ,  H01M4/661 ,  H01M4/668 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

摘要： A positive electrode current collector coated with an adhesion enhancement layer includes an aluminum foil current collector, and an adhesion enhancement layer coated on at least one surface of the aluminum foil current collector. The adhesion enhancement layer includes a first binder polymer and a first conductive material, wherein the adhesion enhancement layer includes 40 to 80 weight % of Al and 1 to 10 weight % of F and has a ratio of F/Al contents of 0.0125 to 0.25 when measured on surfaces of the adhesion enhancement layer by energy-dispersive X-ray spectroscopy (EDX), wherein the first binder polymer includes a first polyvinylidene fluoride-based polymer.

公开(公告)号：US20240322124A1

公开(公告)日：2024-09-26

申请号：US18585085

申请日：2024-02-23

申请人： HONDA MOTOR CO., LTD.

发明人： Kazuyuki SATO

IPC分类号： H01M4/36 ,  H01M4/02 ,  H01M4/134 ,  H01M4/136 ,  H01M4/38 ,  H01M4/58 ,  H01M10/0562

CPC分类号： H01M4/364 ,  H01M4/134 ,  H01M4/136 ,  H01M4/38 ,  H01M4/582 ,  H01M10/0562 ,  H01M2004/028 ,  H01M2300/0068

摘要： Provided is a positive electrode including: a positive electrode current collector; and a positive electrode material mixture layer provided on the positive electrode current collector, in which the positive electrode material mixture layer includes a first active material containing no fluorine; and a second active material containing no fluorine and has a molar ratio of the first active material relative to the second active material of 4 or more and 35 or less, and the first active material has a fluorination potential higher than that of the second active material.

公开(公告)号：US20240313267A1

公开(公告)日：2024-09-19

申请号：US18712766

申请日：2022-12-29

申请人： SUNWODA MOBILITY ENERGY TECHNOLOGY CO., LTD.

发明人： Yao ZHANG ,  Mingwang WANG ,  Xuhui ZHANG ,  Baoyu WANG ,  Hui CHEN

IPC分类号： H01M10/42 ,  H01M4/131 ,  H01M4/133 ,  H01M4/136 ,  H01M10/0525

CPC分类号： H01M10/42 ,  H01M4/131 ,  H01M4/133 ,  H01M4/136 ,  H01M10/0525 ,  H01M2010/4292

摘要： A secondary battery and an electrical device are disclosed. The secondary battery includes: a positive electrode plate including both a positive current collector and a positive active material layer disposed on the positive current collector; and a negative electrode plate including both a negative current collector and a negative active material layer disposed on the negative current collector; where the secondary battery satisfies: 0.5≤(σ1/σ2)/CB≤9.4. The present application balances rates of deintercalating lithium of the positive electrode plate and the negative electrode plate by defining a relationship between a surface density and a Cell Balance (CB) value, so as to prevent the secondary battery from lithium plating or from decreasing the capacity during its operation, thereby increasing the life of the secondary battery.

公开(公告)号：US12095086B2

公开(公告)日：2024-09-17

申请号：US17415363

申请日：2019-12-18

申请人： RENAULT s.a.s ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS) ,  Ecole Nationale Superieure de Chimie de Paris

发明人： Philippe Barboux ,  Mohamed Chakir ,  Domitille Giaume ,  Caroline Mir

IPC分类号： H01M4/131 ,  C01G49/00 ,  H01M4/136 ,  H01M4/139 ,  H01M4/58 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC分类号： H01M4/5815 ,  C01G49/009 ,  H01M4/136 ,  H01M4/625 ,  H01M10/0525 ,  C01P2006/40 ,  H01M2004/027

摘要： A negative electrode active material for a lithium-ion battery has the following formula (I): Li1-xOHFe1+xS (I). x varies from 0.00 to 0.25, preferably from 0.05 to 0.20.

公开(公告)号：US12095077B2

公开(公告)日：2024-09-17

申请号：US15324356

申请日：2015-06-02

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Hideyuki Saka ,  Keiichi Takahashi ,  Hideaki Fujita ,  Tatsuya Hashimoto

IPC分类号： H01M4/36 ,  H01M4/131 ,  H01M4/136 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M10/04 ,  H01M10/0525 ,  H01M10/0587

CPC分类号： H01M4/364 ,  H01M4/131 ,  H01M4/136 ,  H01M4/1391 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/0431 ,  H01M10/0525 ,  H01M10/0587 ,  H01M10/0413 ,  H01M2220/20 ,  Y02E60/10

摘要： A non-aqueous secondary battery includes a positive electrode composite material layer. In a cross-section in a direction of thickness of the positive electrode composite material layer, the positive electrode composite material layer includes a first region including one end portion in a direction intersecting with the direction of thickness, a second region including the other end portion, and a third region lying between the first region and the second region. The first region is composed of a first composite material containing lithium iron phosphate and lithium nickel cobalt manganese composite oxide, and the second region is composed of a second composite material containing lithium iron phosphate and lithium nickel cobalt manganese composite oxide. The third region is composed of a third composite material containing lithium nickel cobalt manganese composite oxide.

公开(公告)号：US20240297295A1

公开(公告)日：2024-09-05

申请号：US18572823

申请日：2022-06-29

申请人： Conamix Inc.

发明人： Stephen Burkhardt

IPC分类号： H01M4/36 ,  H01M4/02 ,  H01M4/133 ,  H01M4/136 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0525

CPC分类号： H01M4/366 ,  H01M4/133 ,  H01M4/136 ,  H01M4/5815 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

摘要： This application relates to lithium batteries with a novel cathode comprising a current collector, at least one first active material layer comprising a conversion active material, and at least one second active material layer comprising a lithium ion intercalation active material.