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公开(公告)号：US20250002356A1
公开(公告)日：2025-01-02
申请号：US18757936
申请日：2024-06-28
Applicant: Ningde Amperex Technology Limited
Inventor： Wenlong SHAO , Zheng YI , Fujin TAN , Yuansen XIE
IPC: C01B32/318 , C01B32/168 , C01B32/336 , H01M4/02 , H01M4/36 , H01M4/38 , H01M4/587 , H01M4/62
Abstract: A porous carbon material includes carbon nanotubes and carbon material particles, a particle elastic modulus of the porous carbon material is Y1, and 0.9 Gpa≤Y1≤5.0 Gpa. The porous carbon material of this application has a high particle elastic modulus and a high powder conductivity. When a silicon-carbon material prepared using the porous carbon material in this application as a skeleton is used in an electrochemical apparatus, the silicon-carbon material can have a high particle elastic modulus and powder conductivity, improving the electrochemical performance of the electrochemical apparatus such as the long cycling performance and rate performance.
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公开(公告)号：US20240322172A1
公开(公告)日：2024-09-26
申请号：US18613168
申请日：2024-03-22
Applicant: Ningde Amperex Technology Limited
Inventor： Zigui ZHENG , Zheng YI , Fujin TAN , Yuansen XIE
IPC: H01M4/587 , H01M4/02 , H01M10/0525
CPC classification number: H01M4/587 , H01M2004/021 , H01M2004/027 , H01M10/0525
Abstract: A hard carbon material has a pore structure. A scattering vector of the pore structure in a small-angle X-ray scattering spectrum is N1 nm−1, and 0.1≤N1≤7. The hard carbon material exhibits a scattering intensity convex peak. A full-width-at-half-maximum of the convex peak is L1 nm−1, and 0.1≤L1≤3.5. A pore volume of micropores of the hard carbon material measured by a nitrogen adsorption method is V2 cc/g, and 0
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公开(公告)号：US20240243248A1
公开(公告)日：2024-07-18
申请号：US18619990
申请日：2024-03-28
Applicant: Ningde Amperex Technology Limited
Inventor： Zheng YI , Zigui ZHENG , Yuansen XIE
CPC classification number: H01M4/133 , H01M4/364 , H01M4/587 , H01M2004/021 , H01M2004/027
Abstract: A negative electrode plate includes a negative current collector and a negative active material layer disposed on at least one side of the negative current collector. The negative active material layer includes a negative active material, the negative active material includes graphite and hard carbon, and a ratio of a mass percent ωH of hydrogen to a mass percent ωC of carbon in the hard carbon is 0.02≤ωH/ωC≤0.20. The negative electrode plate enhances the high-temperature cycle performance of the electrochemical device.
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公开(公告)号：US20250023030A1
公开(公告)日：2025-01-16
申请号：US18899621
申请日：2024-09-27
Applicant: Ningde Amperex Technology Limited
Inventor： Zheng YI , Zigui ZHENG , Yuansen XIE
Abstract: A negative electrode active material has a core-shell structure. The negative electrode active material includes a first shell and at least two core material particles located in the first shell. The core material includes hard carbon. The first shell includes a first shell material with a volumetric specific capacity of 800 mAh/cm3 or more.
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5.发明公开公开(公告)号：US20240239681A1
公开(公告)日：2024-07-18
申请号：US18621509
申请日：2024-03-29
Applicant: Ningde Amperex Technology Limited
Inventor： Zheng YI , Fujin TAN , Zigui ZHENG , Yuansen XIE
CPC classification number: C01G9/006 , H01M4/583 , C01P2002/72 , C01P2002/82 , C01P2004/51 , C01P2004/84 , C01P2006/40 , H01M2004/027
Abstract: A hard carbon material includes a porous skeleton, a first element, and element zinc, where the first element includes at least one of element nitrogen, element sulfur, element boron, element phosphorus or element selenium. A percentage of the first element with respect to a total mass of the hard carbon material is A1%, and a percentage of element zinc with respect to the total mass of the hard carbon material is A2%, where the hard carbon material satisfies 1.5≤A1/A2≤5. When applied to an electrochemical apparatus, the hard carbon material can significantly improve the energy density of the electrochemical apparatus.
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Patent Agency Ranking
公开(公告)号：US20240162440A1
公开(公告)日：2024-05-16
申请号：US18390487
申请日：2023-12-20
Applicant: Ningde Amperex Technology Limited
Inventor： Zigui ZHENG , Zheng YI , Peng DU , Yuansen XIE
IPC: H01M4/587 , C01B32/05 , H01M4/133 , H01M10/0525 , H01M10/0567 , H01M10/0568 , H01M4/02
CPC classification number: H01M4/587 , C01B32/05 , H01M4/133 , H01M10/0525 , H01M10/0567 , H01M10/0568 , C01P2002/74 , C01P2004/03 , C01P2006/11 , C01P2006/12 , C01P2006/40 , H01M2004/021 , H01M2004/027 , H01M2300/0025
Abstract: A negative electrode includes a negative electrode active material layer, the negative electrode active material layer includes negative electrode active material particles, and the negative electrode active material particle includes a porous portion and a nonporous portion with heteroatoms. The heteroatom includes at least one of element boron, nitrogen, fluorine, phosphorus, or sulfur and is located on an interface, and the interface is a region, in the nonporous portion, formed from a bordering position between the nonporous portion and the porous portion to 0.5 μm from the bordering position. The porous portion improves the lithium ion intercalation and deintercalation efficiency. In addition, boron, nitrogen, and other elements doped increase the gram capacity of the negative electrode active material, helping increase the energy density of the electrochemical apparatus.
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7.发明公开公开(公告)号：US20240113275A1
公开(公告)日：2024-04-04
申请号：US18374006
申请日：2023-09-28
Applicant: Ningde Amperex Technology Limited
Inventor： Zigui ZHENG , Fujin TAN , Zheng YI , Yuansen XIE
IPC: H01M4/04 , H01M4/36 , H01M4/583 , H01M10/0525
CPC classification number: H01M4/0471 , H01M4/0404 , H01M4/366 , H01M4/583 , H01M10/0525 , H01M2004/021
Abstract: A composite material includes a graphite particle. A surface of the graphite particle is provided with a first region and a second region. The first region is made of graphite, and the second region includes a hard carbon layer. A surface area of the first region is denoted as A1 μm2, and a surface area of the second region is denoted as A2 μm2, 0≤A1/A2≤9. A thickness of the hard carbon layer is H nm, 5≤H≤500. By controlling the coating amount and coating area of the hard carbon to satisfy the above relationship, this application can improve energy density, capacity performance, and the like at the same time of enhancing dynamic performance.
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公开(公告)号：US20250149542A1
公开(公告)日：2025-05-08
申请号：US18999170
申请日：2024-12-23
Applicant: Ningde Amperex Technology Limited
Inventor： Zigui ZHENG , Zheng YI , Yuansen XIE
Abstract: A negative electrode plate, including a negative current collector and a negative active material layer disposed on at least one side of the negative current collector. The negative active material layer includes a negative active material, including hard carbon particles and graphite particles. The hard carbon particles have a lamellar structure. Based on a quantity of the hard carbon particles, a quantity of the hard carbon particles with an aspect ratio of 3 to 7 accounts for a %, and 30≤a≤70. The face-to-face contact in the lamellar hard carbon active material in the negative electrode plate replaces the point-to-point contact in the hard carbon active material of conventional morphology, thereby effectively reducing the internal resistance of the negative active material layer, and effectively increasing the compacted density of the negative active material layer and reducing the porosity, and in turn, increasing the energy density of the lithium-ion battery.
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公开(公告)号：US20250125355A1
公开(公告)日：2025-04-17
申请号：US18999094
申请日：2024-12-23
Applicant: Ningde Amperex Technology Limited
Inventor： Zheng YI , Zigui ZHENG , Yuansen XIE
IPC: H01M4/583 , H01M4/02 , H01M4/04 , H01M10/0525
Abstract: A negative active material in the negative active material layer includes hard carbon. An H/C value of the hard carbon is 0.05 to 0.18. A CB value of the electrochemical device is 0.95 to 1.05. This application uses hard carbon as a negative active material. By adjusting the H/C value of the hard carbon and the CB value of the electrochemical device, this application can increase the energy density without lithium precipitation, that is, alleviate lithium precipitation and increase the energy density concurrently.
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公开(公告)号：US20250019240A1
公开(公告)日：2025-01-16
申请号：US18899347
申请日：2024-09-27
Applicant: Ningde Amperex Technology Limited
Inventor： Zheng YI
IPC: C01B32/05
Abstract: A negative electrode active material includes a hard carbon material, the hard carbon material includes a carbon element, a hydrogen element, a nitrogen element, and transition metal elements. Based on a total mass of the hard carbon material, a mass percentage of the carbon element is A %, a mass percentage of the hydrogen element is B %, a mass percentage of the nitrogen element is C %, and a mass percentage of the transition metal elements is D %, and 0.003≤B/A≤0.050, 0
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