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1.发明公开公开(公告)号：US20240322120A1
公开(公告)日：2024-09-26
申请号：US18518034
申请日：2023-11-22
发明人： Jinhyon Lee , Ilkyong Kwon , Hyun Nam , Donggeun Lee , Ahram Pyun , Yeonhee Yoon , Youmin Bang , Seunguk Kwon , Jongsup Choi , Seongdae Kim
IPC分类号： H01M4/139 , H01M4/134 , H01M10/0525 , H01M10/14
CPC分类号： H01M4/139 , H01M4/134 , H01M10/0525 , H01M10/14
摘要： A method of preparing a dry electrode, a device for manufacturing a dry electrode, a dry electrode, and a lithium battery are provided. The method includes supplying a metal layer at a first speed, supplying a dry electrode film at a second speed while supplying the dry electrode film intermittently at a third speed less than the second speed, and forming a dry electrode active material layer by intermittently disposing the dry electrode film on at least one side (e.g., one side or both opposite sides) of the metal layer, wherein the dry electrode film is disposed on the metal layer while the dry electrode film is being supplied at the second speed, and the dry electrode film is not disposed on the metal layer while the dry electrode film is being supplied at the third speed.
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公开(公告)号：US20240322112A1
公开(公告)日：2024-09-26
申请号：US18485162
申请日：2023-10-11
发明人： Hyun Nam , Jinhyon Lee , Ahram Pyun , Ilkyong Kwon , Yeonhee Yoon , Donggeun Lee , Seongdae Kim , Seunguk Kwon , Youmin Bang , Jongsup Choi
IPC分类号： H01M4/04 , H01M4/131 , H01M4/1391 , H01M4/62 , H01M4/66 , H01M10/0525
CPC分类号： H01M4/0435 , H01M4/131 , H01M4/1391 , H01M4/623 , H01M4/661 , H01M4/663 , H01M4/667 , H01M10/0525
摘要： A method of preparing a dry electrode film, the dry electrode film, a dry electrode including the dry electrode film, and a lithium battery including the dry electrode film is provided. The method includes providing frozen first dry binder particles, pulverizing the frozen first dry binder particles to prepare second dry binder particles, mixing a dry electrode active material and the second dry binder particles to prepare a dry electrode mixture, and processing the dry electrode mixture into a dry electrode film including a dry binder through a rolling device including a calender roll. A second particle diameter of the second dry binder particles is less than a first particle diameter of the frozen first dry binder particles.
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公开(公告)号：US11114658B2
公开(公告)日：2021-09-07
申请号：US16279306
申请日：2019-02-19
发明人： Heeeun Yoo , Junghyun Nam , Hoon Seok , Yeonhee Yoon , Kyuseo Lee , Bokkyu Jeon , Jaehwan Ha
IPC分类号： H01M4/36 , H01M4/505 , H01M4/525 , H01M4/58 , H01M10/0525 , H01M4/136 , H01M10/42 , H01M4/62 , H01M4/131 , H01M4/02 , H01M10/052
摘要： Provided are a positive active material for a rechargeable lithium battery and a positive electrode including the same. The positive active material for a rechargeable lithium battery includes a first positive active material and a second positive active material, wherein the first positive active material includes at least one nickel-based lithium composite oxide, and the second positive active material is represented by Chemical Formula 2 and has an average particle diameter of about 300 nm to about 600 nm: Lia1Fe1-x1M1x1PO4. [Chemical Formula 2] In Chemical Formula 2, 0.90≤a1≤1.8, 0≤x1≤0.7, and M1 may be Mg, Co, Ni, or a combination thereof.
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公开(公告)号：US20240322398A1
公开(公告)日：2024-09-26
申请号：US18614259
申请日：2024-03-22
发明人： Seunguk Kwon , Jinhyon Lee , Ahram Pyun , Hyun Nam , Yeonhee Yoon , Jongsup Choi , Youmin Bang , Seongdae Kim , Donggeun Lee , Ilkyong Kwon
IPC分类号： H01M50/531 , H01M4/62 , H01M10/052
CPC分类号： H01M50/531 , H01M4/621 , H01M4/625 , H01M10/052
摘要： Provided herein are an electrode and a lithium battery including the same. The electrode includes an electrode current collector, a metal lead including a first region provided on the electrode current collector and a second region protruding outward from the electrode current collector, and an electrode active material layer provided on the electrode current collector. The electrode active material layer covers at least a portion of a side surface A of the first region of the metal lead.
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公开(公告)号：US20240322136A1
公开(公告)日：2024-09-26
申请号：US18614480
申请日：2024-03-22
发明人： Donggeun Lee , Yeonhee Yoon , Seongdae Kim , Jinhyon Lee , Ilkyong Kwon , Hyun Nam , Ahram Pyun
IPC分类号： H01M4/36 , H01M4/62 , H01M4/66 , H01M10/052
CPC分类号： H01M4/366 , H01M4/621 , H01M4/625 , H01M4/661 , H01M10/052
摘要： A dry electrode film, and a dry electrode and a lithium battery that includes the dry electrode film, wherein the dry electrode film includes a first dry electrode active material layer including a first dry electrode active material and a first dry binder fibrillized in a first direction, and a second dry electrode active material layer disposed on a surface of the first dry electrode active material layer and including a second dry electrode active material and a second dry binder fibrillized in a second direction that is different from the first direction, wherein the dry electrode film is a self-standing film.
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公开(公告)号：US11508992B2
公开(公告)日：2022-11-22
申请号：US16863679
申请日：2020-04-30
发明人： Jaehwan Ha , Kijun Kim , Heeeun Yoo , Yeonhee Yoon , Kyuseo Lee , Dongmyung Lee
IPC分类号： H01M4/00 , H01M10/0569 , H01M4/131 , H01M4/36 , H01M4/505 , H01M4/525 , H01M4/62 , H01M10/0525 , H01M10/0567 , H01M4/02
摘要： Rechargeable lithium battery includes a negative electrode including a negative active material layer and a negative electrode functional layer disposed on the negative active material layer; a positive electrode including a positive active material; an electrolyte solution, wherein the negative electrode functional layer includes flake-shaped polyethylene particles, the electrolyte solution includes a lithium salt and a non-aqueous organic solvent, and the non-aqueous organic solvent includes about 60 volume % to about 80 volume % of a propionate-based solvent and about 20 volume % to about 40 volume % of a carbonate-based solvent.
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公开(公告)号：US20200350567A1
公开(公告)日：2020-11-05
申请号：US16864384
申请日：2020-05-01
发明人： Jaehwan Ha , Kijun Kim , Heeeun Yoo , Yeonhee Yoon , Kyuseo Lee , Dongmyung Lee
摘要： A rechargeable lithium battery includes a positive electrode having a positive current collector and a positive active material layer at least partially disposed on the positive current collector, wherein the positive active material layer includes a first positive active material having at least one of a composite oxide of a metal selected from cobalt, manganese, nickel, and a combination thereof and lithium, and a second positive active material having a compound represented by Chemical Formula 1 as defined herein, and a negative electrode having a negative current collector, a negative active material layer at least partially disposed on the negative current collector, and a negative electrode functional layer having generally flake-shaped polyethylene particles at least partially disposed on the negative active material layer.
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公开(公告)号：US20240304796A1
公开(公告)日：2024-09-12
申请号：US18484880
申请日：2023-10-11
发明人： Yeonhee Yoon , Jinhyon Lee , Hyun Nam , Ahram Pyun , Ilkyong Kwon , Donggeun Lee , Seongdae Kim
CPC分类号： H01M4/366 , H01M4/139 , H01M4/623 , H01M4/625 , H01M2004/021
摘要： A method of preparing a dry electrode includes arranging at least one interlayer on at least one surface an electrode current collector to prepare a first stack, arranging a dry electrode film, which has an area larger than an area of the interlayer, on the first stack to prepare a second stack, wherein the dry electrode film includes a first region on the interlayer and a second region extending from the first region beyond an outer periphery of the interlayer, and pulling at least a portion of the second region of the dry electrode film to separate the second region from the first region and provide a dry electrode, wherein the dry electrode film has anisotropic tensile strength, and the dry electrode includes a dry electrode active material layer on the interlayer, but the dry electrode active material layer disposed directly on the electrode current collector is absent.
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公开(公告)号：US11710820B2
公开(公告)日：2023-07-25
申请号：US16864858
申请日：2020-05-01
发明人： Dongmyung Lee , Kijun Kim , Heeeun Yoo , Yeonhee Yoon , Kyuseo Lee , Jaehwan Ha
IPC分类号： H01M4/36 , H01M4/505 , H01M4/525 , H01M4/58 , H01M4/62 , H01M10/0525 , H01M4/02 , H01M50/417
CPC分类号： H01M4/364 , H01M4/366 , H01M4/505 , H01M4/525 , H01M4/5825 , H01M4/62 , H01M10/0525 , H01M50/417 , H01M2004/021
摘要： A rechargeable lithium battery including an electrode assembly includes a positive electrode including a positive current collector and a positive active material layer disposed on the positive current collector; a negative electrode including a negative current collector, a negative active material layer disposed on the negative current collector, and a negative electrode functional layer disposed on the negative active material layer; and a separator, wherein the positive active material layer includes a first positive active material including at least one of a composite oxide of metal selected from cobalt, manganese, nickel, and a combination thereof and lithium and a second positive active material including a compound represented by Chemical Formula 1, the negative electrode functional layer includes flake-shaped polyethylene particles, and a battery capacity is greater than or equal to about 3.5 Ah.
LiaFe1−x1Mx1PO4 [Chemical Formula 1]
In Chemical Formula 1, 0.90≤a≤1.8, 0≤x1≤0.7, and M is Mn, Co, Ni, or a combination thereof.-
10.发明公开公开(公告)号：US20230187637A1
公开(公告)日：2023-06-15
申请号：US18065892
申请日：2022-12-14
发明人： Ilkyong Kwon , Hyun Nam , Yeonhee Yoon , Donggeun Lee , Jinhyon Lee , Ahram Pyun
CPC分类号： H01M4/583 , H01M4/0435 , H01M4/133 , H01M4/1393 , H01M4/623 , H01M4/661
摘要： An electrode, a lithium battery including the same, and a method of manufacturing the electrode. The electrode includes an electrode current collector, and an electrode active material layer on at least one surface of the electrode current collector, wherein the electrode active material layer includes a first electrode active material, a second electrode active material, and a binder, the electrode active material layer includes a first cluster, and the first cluster is an agglomerate including a plurality of first electrode active materials, one surface of the electrode active material layer includes a first domain including the first cluster, and an area of the first domain is about 15% to about 60% of the total area of the one surface of the electrode active material layer.
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