公开(公告)号：US20230378605A1

公开(公告)日：2023-11-23

申请号：US18030906

申请日：2022-01-07

申请人： LG Energy Solution, Ltd.

发明人： Jiwon Lee ,  Kwangjin Kim

IPC分类号： H01M50/446 ,  H01M50/54 ,  H01M4/13 ,  H01M50/46 ,  H01M50/426 ,  H01M10/052

CPC分类号： H01M50/446 ,  H01M50/54 ,  H01M4/13 ,  H01M50/46 ,  H01M50/426 ,  H01M10/052

摘要： A unit cell for a secondary battery according to one embodiment of the present disclosure includes an electrode plate on which a tab is formed, and a separator, wherein the separator includes a first coating part in which an organic/inorganic composite porous coating layer is formed on at least one surface of a base substrate, and a second coating part on which an insulating coating layer is formed.

公开(公告)号：US20230378518A1

公开(公告)日：2023-11-23

申请号：US18204226

申请日：2023-05-31

申请人： Purdue Research Foundation

发明人： Vilas Ganpat Pol ,  Patrick JH Kim

IPC分类号： H01M10/052 ,  H01M50/44 ,  H01M50/46 ,  H01M50/446 ,  H01M50/426 ,  H01M50/414 ,  H01M50/489 ,  H01M50/491 ,  H01M50/417 ,  H01M50/434 ,  H01M50/451 ,  H01M50/457

CPC分类号： H01M10/052 ,  H01M50/44 ,  H01M50/46 ,  H01M50/446 ,  H01M50/426 ,  H01M50/414 ,  H01M50/489 ,  H01M50/491 ,  H01M50/417 ,  H01M50/434 ,  H01M50/451 ,  H01M50/457

摘要： A metal-ion deposition regulator to regulate the flux and deposition of metal ions in an electrochemical cell. The regulator containing two membranes made of a polymer and a plurality of two-dimensional porous nanosheets sandwiched between the two membranes. The regulator is capable of distributing flux of metal ions passing through the metal-ion deposition regulator and regulating the deposition of the metal ions onto the cathode or anode thereby suppressing dendrite growth in the electrochemical cell. An electrochemical cell containing an anode, a cathode, a liquid electrolyte, and a metal-ion deposition regulator. A method of making a metal-ion deposition regulator. The method includes fabricating two-dimensional porous nanosheets utilizing graphene oxide as an expendable template, and sandwiching the porous nanosheets between two membranes made of a polymer such that the nanosheets are in contact with the two membranes.

公开(公告)号：US20230374334A1

公开(公告)日：2023-11-23

申请号：US18031274

申请日：2021-10-08

申请人： Resonac Corporation

发明人： Atsushi SUGAWARA ,  Jun KONISHI

IPC分类号： C09D133/08 ,  C09D7/61 ,  H01M50/451 ,  H01M50/446 ,  H01M50/42 ,  H01M50/423 ,  H01M50/434 ,  H01M4/62 ,  H01M4/13

CPC分类号： C09D133/08 ,  C09D7/61 ,  H01M50/451 ,  H01M50/446 ,  H01M50/42 ,  H01M50/423 ,  H01M50/434 ,  H01M4/622 ,  H01M4/13

摘要： Provided is a composition capable of forming an easy-drying coating on an application surface in a paint, an ink, and an adhesive which mainly contain polymers, or a coating liquid for a positive electrode, a negative electrode, a separator, and the like of a lithium-ion secondary battery. The coating composition containing a filler, a binder, a thickener, and a solvent, wherein the binder is at least one selected from a diene rubber and a (meth)acrylate polymer; a viscosity of the coating composition is 1.0×106 Pa·s or less as measured at a shear rate of 0.01/s; and the following thixotropy index (TI) is 1.1×106 or more: [thixotropy index (TI)]=[viscosity of the coating composition as measured at a shear rate of 0.01/s]/[viscosity of the coating composition as measured at a shear rate of 10000/s].

公开(公告)号：US20230361427A1

公开(公告)日：2023-11-09

申请号：US18013090

申请日：2022-05-16

申请人： SAMSUNG SDI CO., LTD.

发明人： Byungsoo KIM ,  Yeonho LEE ,  Namju KIM ,  Jaehyun CHO

IPC分类号： H01M50/449 ,  H01M50/491 ,  H01M50/446 ,  H01M50/46

CPC分类号： H01M50/449 ,  H01M50/491 ,  H01M50/446 ,  H01M50/461

摘要： Provided are a separator for a secondary battery, and a secondary battery including the same, the separator including a porous substrate, an inorganic layer disposed on at least one surface of the porous substrate, and an adhesive layer disposed on the inorganic layer, in which the adhesive layer includes a fluorine-based resin, a polyacrylic acid-based compound, and a nitrogen-containing compound.

公开(公告)号：US11811088B2

公开(公告)日：2023-11-07

申请号：US16883331

申请日：2020-05-26

申请人： Kabushiki Kaisha Toshiba

发明人： Wataru Uno ,  Yasuyuki Hotta ,  Shinsuke Matsuno ,  Norio Takami

IPC分类号： H01M50/446 ,  H01M50/449

CPC分类号： H01M50/446 ,  H01M50/449

摘要： A separator includes an inorganic particle layer including an inorganic particle, a polymeric binder and a fiber substance. A mass ratio of the fiber substance with respect to a total mass of the inorganic particle, the polymeric binder and the fiber substance is 0.1 mass % or more and 40 mass % or less.

公开(公告)号：US20230352744A1

公开(公告)日：2023-11-02

申请号：US18331405

申请日：2023-06-08

申请人： Ningde Amperex Technology Limited

发明人： Hongmei WEI ,  Yibo ZHANG ,  Qiuyan WENG

IPC分类号： H01M10/0587 ,  H01M50/44 ,  H01M50/446 ,  H01M4/62 ,  H01M10/0525

CPC分类号： H01M10/0587 ,  H01M4/622 ,  H01M10/0525 ,  H01M50/44 ,  H01M50/446

摘要： A jelly-roll type electrode assembly includes an electrode plate and a separation layer disposed on at least one surface of the electrode plate. A bonding force of the separation layer to a surface of the electrode plate in a first region of the jelly-roll type electrode assembly is greater than a bonding force of the separation layer to the surface of the electrode plate in a second region of the jelly-roll type electrode assembly. In this way, the bonding force of the separation layer to the surface of the electrode plate in the first region in the jelly-roll type electrode assembly is relatively high. When the electrode plate in the second region is stressed, a slight slip can occur between layers to release the stress, alleviating deformation of the electrochemical device caused by stress concentration.

公开(公告)号：US20230327286A1

公开(公告)日：2023-10-12

申请号：US18023922

申请日：2021-09-15

申请人： LG ENERGY SOLUTION, LTD.

发明人： Da-Kyung HAN ,  So-Mi JEONG ,  Min-Ji KIM

IPC分类号： H01M50/446 ,  H01M50/449 ,  H01M50/403 ,  H01M50/491

CPC分类号： H01M50/446 ,  H01M50/449 ,  H01M50/403 ,  H01M50/491

摘要： A separator for an electrochemical device, where the separator includes a semi-crystalline and/or amorphous polymer, such as polyvinyl acetate and polyethylene-co-vinyl acetate, as a binder polymer of an inorganic coating layer. The surfaces of the inorganic particles are at least partially coated with a coupling agent. Therefore, it is possible to prevent the inorganic particles from being detached from the inorganic coating layer. In addition, phase separation is accelerated under a humidified condition in manufacturing the separator so that the surface of the separator may be provided with an adhesive portion in which a large amount of binder polymer is distributed. As a result, the separator may have improved binding force to an electrode.

公开(公告)号：US20230318139A1

公开(公告)日：2023-10-05

申请号：US18041863

申请日：2021-09-17

申请人： Vehicle Energy Japan Inc.

发明人： Yusuke TACHIKAWA ,  Yasutaka KUROKI ,  Takeshi MIKI

IPC分类号： H01M50/446 ,  H01M10/0525 ,  H01M4/131 ,  H01M50/46 ,  H01M4/04 ,  H01M4/62 ,  H01M4/525 ,  H01M4/505 ,  H01M10/0587

CPC分类号： H01M50/446 ,  H01M10/0525 ,  H01M4/131 ,  H01M50/46 ,  H01M4/0404 ,  H01M4/623 ,  H01M4/622 ,  H01M4/525 ,  H01M4/505 ,  H01M10/0587 ,  H01M2004/028

摘要： A lithium ion secondary battery can suppress the deterioration of the insulating property of a positive electrode insulating layer by preventing the material of the positive electrode insulating layer from sinking into a positive electrode active material layer. A lithium ion secondary battery according is a lithium ion secondary battery including a positive electrode and a negative electrode that are laminated upon each other. The lithium ion secondary battery is characterized in that the positive electrode includes: a positive electrode foil; a positive electrode active material layer formed on a surface of the positive electrode foil; and a positive electrode insulating layer formed on a surface of the positive electrode active material layer, in which the positive electrode active material layer includes a positive electrode active material and a first nonaqueous binder, and the positive electrode insulating layer includes an inorganic filler, a second nonaqueous binder, and a dispersant.

公开(公告)号：US11777176B2

公开(公告)日：2023-10-03

申请号：US16871442

申请日：2020-05-11

申请人： Meta Materials Inc.

发明人： Steven A. Carlson

IPC分类号： H01M50/46 ,  H01M4/64 ,  H01M10/052 ,  H01M10/42 ,  H01M50/403 ,  H01M50/446 ,  H01M4/04 ,  H01M10/0585 ,  H01M4/40 ,  H01M4/66 ,  H01M4/70 ,  H01M6/14 ,  H01M10/0525 ,  H01M6/16 ,  H01M4/136 ,  H01M4/02

CPC分类号： H01M50/46 ,  H01M4/0402 ,  H01M4/0421 ,  H01M4/405 ,  H01M4/64 ,  H01M4/661 ,  H01M4/70 ,  H01M6/14 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0585 ,  H01M10/4235 ,  H01M50/403 ,  H01M50/446 ,  H01M4/136 ,  H01M6/16 ,  H01M2004/028 ,  Y02P70/50 ,  Y02T10/70 ,  Y10T29/4911 ,  Y10T29/49115

摘要： Provided are methods of preparing lithium batteries comprising a separator/electrode assembly having one or more current collector layers interposed between first and second electrode layers of the same polarity, wherein the first electrode layer is coated or laminated overlying a separator layer and the separator/electrode assembly is interleaved with an electrode comprising a current collector layer interposed between two electrode layers of opposite polarity to said first and second electrodes.

公开(公告)号：US11777133B2

公开(公告)日：2023-10-03

申请号：US17204740

申请日：2021-03-17

申请人： NINGDE AMPEREX TECHNOLOGY LIMITED

发明人： Wei Cui ,  Xinghua Tao ,  Cong Cheng

IPC分类号： H01M50/411 ,  H01M10/0525 ,  H01M50/446 ,  H01M50/414 ,  H01M50/423 ,  H01M50/417 ,  H01M50/42 ,  H01M50/426 ,  H01M50/429 ,  H01M50/451 ,  H01M50/494 ,  H01M50/489 ,  H01M50/457

CPC分类号： H01M10/0525 ,  H01M50/414 ,  H01M50/417 ,  H01M50/42 ,  H01M50/423 ,  H01M50/426 ,  H01M50/429 ,  H01M50/446 ,  H01M50/451 ,  H01M50/457 ,  H01M50/489 ,  H01M50/494

摘要： A separator includes: a first porous substrate; and a second porous substrate arranged on at least one surface of the first porous substrate; wherein the elongation at break of the second porous substrate is greater than the elongation at break of the first porous substrate in at least one of the machine and transverse directions of the separator. The separator has a high tensile strength and an elongation at break and good heat resistance, and may improve the safety performance of the energy storage device when the separator is applied to the energy storage device.