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公开(公告)号：US20240322183A1
公开(公告)日：2024-09-26
申请号：US18736620
申请日：2024-06-07
Applicant: Ningde Amperex Technology Limited
Inventor： Mingju LIU
IPC: H01M4/62 , H01M4/02 , H01M4/131 , H01M4/133 , H01M10/0525
CPC classification number: H01M4/625 , H01M4/131 , H01M4/133 , H01M10/0525 , H01M2004/021 , H01M2004/027 , H01M2004/028
Abstract: An electrode includes a current collector and an active material layer located on one side or two sides of the current collector, the active material layer including an active material and a conductive agent. The conductive agent includes carbon nanotubes, the active material layer includes rope-shaped carbon nanotube aggregates formed by the carbon nanotubes, the carbon nanotube aggregates are interwoven to form a cage-like grid, and the active material is wrapped inside the cage-like grid.
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2.发明公开公开(公告)号：US20240297307A1
公开(公告)日：2024-09-05
申请号：US18664705
申请日：2024-05-15
Applicant: Ningde Amperex Technology Limited
Inventor： Mingju LIU , Yajie LI , Qingwen ZHANG
IPC: H01M4/60 , H01M4/02 , H01M4/04 , H01M4/1399 , H01M4/62
CPC classification number: H01M4/602 , H01M4/0404 , H01M4/0471 , H01M4/1399 , H01M4/625 , H01M2004/021 , H01M2004/027
Abstract: An electrochemical apparatus includes an electrode, the electrode includes a current collector and an active material layer located on one side or two sides of the current collector; where along a thickness direction of the active material layer, the active material layer is divided into four portions, each portion is a detection region, the detection region is subjected to thermogravimetric analysis at a temperature rise rate of 10° C./min in an inert atmosphere, and results of the thermogravimetric analysis show that a weight loss mass percentage of the detection region at 200° C. to 800° C. gradually increases as a distance between the detection region and the current collector decreases in the thickness direction.
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3.发明公开公开(公告)号：US20240339612A1
公开(公告)日：2024-10-10
申请号：US18664902
申请日：2024-05-15
Applicant: Ningde Amperex Technology Limited
Inventor： Mingju LIU , Yajie LI , Qingwen ZHANG
CPC classification number: H01M4/583 , H01M4/0404 , H01M4/0471 , H01M4/1393 , H01M4/622 , H01M4/625 , H01M4/661 , H01M2004/021 , H01M2004/027
Abstract: An electrochemical apparatus includes an electrode, the electrode includes a current collector and an active material layer disposed on at least one surface of the current collector, where when the active material layer is subjected to thermogravimetric analysis at a temperature rise rate of 10° C./min in an inert atmosphere, a result of the thermogravimetric analysis shows that a mass change of the active material layer at 200° C. to 350° C. is 0% to 0.2%.
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4.发明公开公开(公告)号：US20240297302A1
公开(公告)日：2024-09-05
申请号：US18664714
申请日：2024-05-15
Applicant: Ningde Amperex Technology Limited
Inventor： Mingju LIU , Yajie LI , Qingwen ZHANG
CPC classification number: H01M4/366 , H01M4/0404 , H01M4/043 , H01M4/0471 , H01M4/13 , H01M4/139 , H01M4/622 , H01M2004/021
Abstract: An electrochemical apparatus includes an electrode, the electrode includes a current collector and an active material layer located on one side or two sides of the current collector. The active material layer includes a first region and a second region, and in a thickness direction of the electrode, the first region is located between the current collector and the second region. The first region is from a current collector side to ⅔ of thickness of the active material layer, and the second region is from ⅔ of thickness of the active material layer to a surface of the electrode. Results of thermogravimetric analysis performed on the active material layer in an inert atmosphere at a temperature rise rate of 10° C./min show that a difference in the numbers of thermal weight loss peaks between the first region and the second region at 200° C. to 800° C. is ≥1.
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