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公开(公告)号：US11145852B2
公开(公告)日：2021-10-12
申请号：US16299409
申请日：2019-03-12
Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED
Inventor： Daoyi Jiang , Hang Cui , Yuansen Xie
IPC: H01M4/134 , H01M4/131 , H01M4/133 , H01M4/36 , H01M4/38 , H01M4/46 , H01M4/58 , H01M10/0525 , H01M4/02
Abstract: The present application relates to an anode active material and an anode, an electrochemical device and an electronic device using same. Specifically, the present application provides an anode active material, including a lithiated silicon-oxygen material and a coating layer, where there is at least a Si—O-M bond between the coating layer and the lithiated silicon-oxygen material, where M is selected from one or more of an aluminum element, a boron element and a phosphorus element. The anode active material of the present application has high stability and is suitable for aqueous processing to be prepared into an anode.
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2.发明申请公开(公告)号：US20200014028A1
公开(公告)日：2020-01-09
申请号：US16548855
申请日：2019-08-23
Applicant: Ningde Amperex Technology Limited
Inventor： Hang Cui , Taiqiang Chen , Yuansen Xie
Abstract: The present invention provides a modified graphite negative electrode material, preparation method thereof and a secondary battery. The modified graphite negative electrode material includes a graphite and a multilayer graphene. The multilayer graphene are dispersed in the graphite. The multilayer graphene are loaded with a conductive agent by bonding of a binder. The modified graphite negative electrode material can achieve a higher compaction density for the negative electrode, and can effectively improve the lithium precipitation of the negative electrode of the secondary battery while improving the cycle performance of the secondary battery when being applied to the secondary battery.
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公开(公告)号：US20230068610A1
公开(公告)日：2023-03-02
申请号：US17973865
申请日：2022-10-26
Applicant: Ningde Amperex Technology Limited
Inventor： Chao Wang , Ting Yi , Hang Cui , Yuansen Xie
IPC: H01M4/58 , H01M4/62 , H01M4/36 , C01B32/907
Abstract: A negative electrode material, and a negative electrode plate, an electrochemical device, and an electronic device including the same. The negative electrode material includes SiMxCy, where 0.5≤x≤2, 0.5≤y≤4, and M includes at least one of boron, nitrogen, oxygen, or aluminum; for SiMxCy, a particle size at a quantity accumulation degree of A % is DNA, a particle size at a volume accumulation degree of B % is DVB, and a half-peak width of a quantity distribution curve is ΔDN; and 2 μm≤(DV50−DN50)≤6 μm, and 1≤(DN99−DN1)/ΔDN≤1.3. The use of the negative electrode material, and the negative electrode plate, the electrochemical device and the electronic device including the same according to the present application achieve good cycle performance and energy density.
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公开(公告)号：US20230034617A1
公开(公告)日：2023-02-02
申请号：US17952646
申请日：2022-09-26
Applicant: Ningde Amperex Technology Limited
Inventor： Qunchao Liao , Hang Cui , Yuansen Xie , Chao Wang
Abstract: A negative electrode material includes silicon-based particles and graphite particles. In a case that a Dn50/Dv50 ratio of the graphite particles is A and a Dn50/Dv50 ratio of the silicon-based particles is B, the following conditional expressions (1) to (3) are satisfied: 0.1≤A≤0.65 (1); 0.3≤B≤0.85 (2); and B>A (3), where, Dv50 is a particle diameter of particles measured when a cumulative volume fraction in a volume-based distribution reaches 50%, and Dn50 is a particle diameter of particles measured when a cumulative number fraction in a number-based distribution reaches 50%. The present invention further provides a negative electrode plate, a lithium-ion secondary battery or electrochemical device containing the negative electrode plate, and an electronic device containing the lithium-ion secondary battery and/or electrochemical device.
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5.发明授权公开(公告)号：US11223041B2
公开(公告)日：2022-01-11
申请号：US16393182
申请日：2019-04-24
Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED
Inventor： Daoyi Jiang , Zhihuan Chen , Hang Cui , Yuansen Xie
IPC: H01M4/36 , H01M4/38 , H01M4/134 , H01M4/131 , H01M4/133 , H01M10/0569 , H01M10/0525 , H01M4/62
Abstract: The present application relates to an anode active material and an anode, an electrochemical device and an electronic device using the same. Specifically, the present application provides an anode active material, including a lithiated silicon-oxygen material and a coating layer, where the coating layer and the lithiated silicon-oxygen material at least have one or more structural units selected from formulae CF2a, CHFb and CH2c therebetween, where a, b, and c are integers greater than or equal to 6. The anode active material of the present application has high stability and is suitable for being subjected to aqueous processing to obtain the anode.
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Patent Agency Ranking
6.发明授权公开(公告)号：US12266786B2
公开(公告)日：2025-04-01
申请号：US17460736
申请日：2021-08-30
Applicant: Ningde Amperex Technology Limited
Inventor： Qunchao Liao , Hang Cui , Yuansen Xie
Abstract: A negative electrode includes silicon-based particles and graphite particles, where a quantity of graphite particles present within a vertical distance of about 0 to 6 μm to respective edges of the silicon-based particles is N, and based on a total quantity of the silicon-based particles, more than about 50% of the silicon-based particles satisfy: 6≤N≤17. The negative electrode has good cycle performance, and a battery prepared by using the negative electrode has good rate performance and a low deformation rate.
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公开(公告)号：US12183915B2
公开(公告)日：2024-12-31
申请号：US17440723
申请日：2020-03-05
Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED
Inventor： Zhihuan Chen , Daoyi Jiang , Hang Cui , Yuansen Xie
IPC: H01M4/36 , H01M4/02 , H01M4/48 , H01M4/587 , H01M10/0525
Abstract: The present application relates to an anode material, and an electrochemical device and an electronic device using the same. The anode material of the present application includes: a silicon compound SiOx, where x is 0.5-1.5; an oxide MeOy layer, the MeOy layer coating at least a portion of the silicon compound SiOx, where Me includes at least one of Al, Si, Ti, Mn, V, Cr, Co or Zr, where y is 0.5-3; and a carbon nanotube layer, the carbon nanotube layer coating at least a portion of the MeOy layer. The anode material can significantly enhance the cycle performance and rate performance of the electrochemical device, and significantly reduce the impedance of the electrochemical device.
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公开(公告)号：US12119486B2
公开(公告)日：2024-10-15
申请号：US17362581
申请日：2021-06-29
Applicant: Ningde Amperex Technology Limited
Inventor： ChengBo Zhang , Ting Yi , Hang Cui , Yuansen Xie
CPC classification number: H01M4/48 , H01M4/0471 , H01M4/583
Abstract: An anode material includes a lithiated silicon oxide material and a MySiOz layer. The lithiated silicon oxide material includes Li2SiO3, Li2Si2O5 or a combination thereof, and the MySiOz layer coats the lithiated silicon oxide material; M includes Mg, Al, Zn, Ca, Ba, B or any combination thereof; and 0
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公开(公告)号：US20230042519A1
公开(公告)日：2023-02-09
申请号：US17957179
申请日：2022-09-30
Applicant: Ningde Amperex Technology Limited
Inventor： Chao Wang , Ting Zhang , Daoyi Jiang , Hang Cui
Abstract: A negative electrode material includes a composite of a silicon-based material (1), a polymer (2), and carbon nanotubes (3), where the polymer (2) contains a first group and a second group, the first group is chemically bonded to the carbon nanotubes (3), and the second group is chemically bonded to the silicon-based material (1). Both the carbon nanotubes (3) and the polymer (2) containing two groups are applied to surfaces of particles of the silicon-based material (1). The two groups of the polymer (2) are chemically bonded to the silicon-based material (1) and the carbon nanotubes (3) respectively, so that bonding force between the silicon-based material (1) and the carbon nanotubes (3) is enhanced and a uniform carbon nanotube (3) coating layer is formed. This can significantly improve conductive performance of the silicon-based material (1), thereby improving cycling performance and rate performance of an electrochemical apparatus.
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公开(公告)号：US12237504B2
公开(公告)日：2025-02-25
申请号：US17312208
申请日：2019-12-17
Applicant: Ningde Amperex Technology Limited
Inventor： Daoyi Jiang , Hang Cui , Yuansen Xie
Abstract: An anode material includes a silicon compound SiOx, where x is about 0.5 to 1.5; an oxide MeOy layer, the MeOy layer coating the silicon compound SiOx, where y is about 0.5 to 3; and a carbon layer, the carbon layer coating the MeOy layer. Me includes at least one of Al, Si, Ti, Mn, V, Cr, Co, and Zr. The surface of the MeOy layer adjacent to the carbon layer has an open pore structure, and at least part of the open pore structure is filled with the carbon layer. The anode material improves the cycle performance of the electrochemical device and significantly reduce the impedance of the electrochemical device.
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