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1.发明公开公开(公告)号：US20240213474A1
公开(公告)日：2024-06-27
申请号：US18601234
申请日：2024-03-11
Applicant: Ningde Amperex Technology Limited
Inventor： Lihong HE , Jia TANG , Jiali DONG , Yuansen XIE
CPC classification number: H01M4/587 , C01B32/20 , C01P2002/74 , C01P2002/82 , C01P2004/03 , C01P2006/40 , H01M2004/021 , H01M2004/027
Abstract: A negative active material includes a carbon material. The carbon material satisfies the following relationship: 6.1
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公开(公告)号：US20240021775A1
公开(公告)日：2024-01-18
申请号：US18373981
申请日：2023-09-28
Applicant: Ningde Amperex Technology Limited
Inventor： Yuxin CAI , Pengyang FENG , Jiali DONG , Yuansen XIE
IPC: H01M4/04 , H01M10/0525 , H01M4/583
CPC classification number: H01M4/0404 , H01M10/0525 , H01M4/583 , H01M2004/027
Abstract: A negative electrode includes a current collector and a negative active material layer disposed on the current collector. The negative active material layer includes negative active material particles. The negative active material particles include secondary particles. The negative active material layer includes a pore A. A diameter of the pore A is 59 nm to 73 nm when tested by a mercury intrusion porosimetry. A ratio C004/C110 of the negative active material layer is 6 to 20. The electrochemical device using the negative electrode according to this application possesses a relatively high capacity and improved performance of resistance to cycle expansion.
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3.发明申请公开(公告)号：US20220223865A1
公开(公告)日：2022-07-14
申请号：US17708288
申请日：2022-03-30
Applicant: Ningde Amperex Technology Limited
Inventor： Pengyang FENG , Yuxin CAI , Jiali DONG , Yuansen XIE
IPC: H01M4/583 , H01M10/0525
Abstract: A negative electrode active material having a median particle size D1v50, the negative electrode active material has a median particle size D2v50 under a pressure of 1 t, and D2v50/D1v50 is not less than 0.8. The negative electrode active material achieves a balance between high capacity and high cycle expansion performance of an electrochemical device.
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公开(公告)号：US20240405218A1
公开(公告)日：2024-12-05
申请号：US18679419
申请日：2024-05-30
Applicant: Ningde Amperex Technology Limited
Inventor： Yusheng CHEN , Jiali DONG
Abstract: A secondary battery includes: a negative electrode including a negative electrode active material layer. The negative electrode active material layer includes a first active material layer having a first active material and a second active material layer having a second active material. A first button battery using lithium plate as a negative electrode and the first active material as a positive active material of a positive electrode experiences a charge and discharge test; a terminal potential slope of a lithium deintercalation curve of the first button battery is Sa; a second button battery using lithium plate as a negative electrode and the second active material as a positive active material of a positive electrode experiences a charge and discharge test; a terminal potential slope of a lithium deintercalation curve of the second button battery is Sb; Sa
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5.发明公开公开(公告)号：US20240274787A1
公开(公告)日：2024-08-15
申请号：US18620161
申请日：2024-03-28
Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED
Inventor： Jiali DONG , Xi HU
IPC: H01M4/13 , H01M4/02 , H01M4/70 , H01M10/0525 , H01M10/0568 , H01M10/0569
CPC classification number: H01M4/13 , H01M4/70 , H01M10/0525 , H01M10/0568 , H01M10/0569 , H01M2004/021 , H01M2004/027 , H01M2300/0028
Abstract: An electrochemical apparatus including a negative electrode plate, where the negative electrode plate includes a negative electrode current collector and a negative electrode active material layer disposed on at least one surface of the negative electrode current collector, and the negative electrode active material layer includes a negative electrode active material; a length L of the negative electrode current collector and a width W of the negative electrode current collector satisfy 8≤L/W≤40 and 40 mm≤W≤145 mm; and an R value of the negative electrode active material is 0.1 to 0.4.
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Patent Agency Ranking
公开(公告)号：US20230299277A1
公开(公告)日：2023-09-21
申请号：US18324419
申请日：2023-05-26
Applicant: Ningde Amperex Technology Limited
Inventor： Wenbo JIN , Jiali DONG , Lihong HE , Yuansen XIE
IPC: H01M4/36 , H01M10/0525 , H01M10/0566
CPC classification number: H01M4/366 , H01M10/0525 , H01M10/0566 , H01M2004/021
Abstract: An electrochemical apparatus includes an electrolyte and a negative electrode plate. The negative electrode plate includes a negative electrode current collector and a negative electrode active material layer disposed on at least one surface of the negative electrode current collector. The negative electrode active material layer contains a negative electrode active material, and a tortuosity T of the negative electrode active material layer satisfies the following relation: 1
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7.发明公开公开(公告)号：US20230197958A1
公开(公告)日：2023-06-22
申请号：US18173295
申请日：2023-02-23
Applicant: Ningde Amperex Technology Limited
Inventor： Lihong HE , Jia TANG , Jiali DONG , Yuansen XIE
CPC classification number: H01M4/587 , C01B32/20 , H01M2004/021
Abstract: A negative active material includes a carbon material. The carbon material satisfies the following relationship: 6
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公开(公告)号：US20240405204A1
公开(公告)日：2024-12-05
申请号：US18679434
申请日：2024-05-30
Applicant: Ningde Amperex Technology Limited
Inventor： Yusheng CHEN , Yuxin CAI , Jiali DONG
Abstract: A secondary battery according to this application includes a negative electrode. The negative electrode includes a current collector and a negative electrode active material layer disposed on a surface of the current collector. The negative electrode active material layer includes a first negative electrode active material layer and a second negative electrode active material layer. The first negative electrode active material layer is disposed between the current collector and the second negative electrode active material layer. The first negative electrode active material layer includes a first negative electrode active material, and the first negative electrode active material has a maximum rebound rate Ra; and the second negative electrode active material layer includes a second negative electrode active material, and the second negative electrode active material has a maximum rebound rate Rb; where 5%≤Ra≤13%, 10%≤Rb≤17%, and Ra
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公开(公告)号：US20240290959A1
公开(公告)日：2024-08-29
申请号：US18649030
申请日：2024-04-29
Applicant: Ningde Amperex Technology Limited
Inventor： Jia TANG , Pengyang FENG , Jiali DONG , Yuansen XIE
CPC classification number: H01M4/366 , H01M4/133 , H01M4/1393 , H01M4/525 , H01M4/623 , H01M2004/021 , H01M2004/027 , H01M2004/028
Abstract: An anode including a current collector and an anode active material layer disposed on the current collector are provided. The anode active material layer includes first oriented particles having a first tilt angle θ1 inclined with respect to the direction parallel to the current collector, and second oriented particles having a second tilt angle θ2 inclined with respect to the direction parallel to the current collector. The first tilt angle θ1 and the second tilt angle θ2 are different and both not greater than 70°.
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公开(公告)号：US20230307638A1
公开(公告)日：2023-09-28
申请号：US18075636
申请日：2022-12-06
Applicant: Ningde Amperex Technology Limited
Inventor： Pengyang FENG , Jiali DONG , Jia TANG , Yuansen XIE
Abstract: An anode material having 0.8≤0.06×(Dv50)2−2.5×Dv50+Dv99≤12 (1); and 1.2≤0.2×Dv50−0.006×(Dv50)2+BET≤5 (2), where Dv50 represents a value in the volume-based particle size distribution of the anode material that is greater than the particle size of 50% of the particles, Dv99 represents a value in the volume-based particle size distribution of the anode material that is greater than the particle size of 99% of the particles, and BET is a specific surface area of the anode material, wherein Dv50 and Dv99 are expressed in μm and BET is expressed in m2/g. The anode material is capable of significantly improving the rate performance of electrochemical devices.
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