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公开(公告)号：US20250059678A1
公开(公告)日：2025-02-20
申请号：US18932656
申请日：2024-10-31
Inventor： Xiangyu ZHAO , Shunlin SONG , Yanbin CHEN , Tianmeng ZHAO , Yafei LIU
IPC: C30B29/26 , C30B1/02 , C30B29/60 , H01M10/0525
Abstract: Provided are a single crystal multi-element cathode material, a preparation method thereof, and a lithium-ion battery. The multi-element cathode material includes quasi single crystal particles each consisting of a plurality of crystal grains, and element G is present at grain boundaries between the plurality of crystal grains. A concentration of the element G at a g-site of the grain boundaries gradually decreases with an increase in a distance between the g-site and a surface of the quasi single crystal particles. The element G is selected from at least one of Ni, Co, Mn, Ta, Cr, Mo, W, La, Al, Y, Ti, Zr, V, Nb, Ce, Er, and B.
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公开(公告)号：US20240228322A9
公开(公告)日：2024-07-11
申请号：US18400498
申请日：2023-12-29
Inventor： Hang ZHANG , Yafei LIU , Yuqiang JIN , Xuequan ZHANG , Yanbin CHEN
IPC: C01G53/00 , H01M10/0525
CPC classification number: C01G53/42 , H01M10/0525 , C01P2004/03 , C01P2004/61 , C01P2004/62 , C01P2004/84 , C01P2006/11 , C01P2006/16 , C01P2006/40
Abstract: A positive electrode material, a preparation method therefor, and an application thereof are disclosed. The cathode material is composed of secondary particles agglomerated by primary particles; wherein individual secondary particle contains an inner core structure, a middle layer, and a shell layer, in this order, along a direction from a center to a surface of the secondary particle; wherein the middle layer is distributed in a circular ring shape; and wherein the secondary particle has a structure of close packing of an inner core structure, loose and porous middle layer, and close packing of the shell layer.
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公开(公告)号：US11958757B2
公开(公告)日：2024-04-16
申请号：US17778468
申请日：2021-03-03
Inventor： Jun Wang , Yafei Liu , Yanbin Chen
CPC classification number: C01G45/1228 , C01G53/50 , C01P2006/12
Abstract: The present disclosure relates to the technical field of lithium ion battery, and discloses a Lithium-Manganese-rich material and a preparation method and a use thereof.
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公开(公告)号：US20230395793A1
公开(公告)日：2023-12-07
申请号：US18235084
申请日：2023-08-17
Inventor： Hang ZHANG , Yafei LIU , Jingpeng WANG , Xuequan ZHANG , Yanbin CHEN
CPC classification number: H01M4/505 , H01M4/525 , C01G53/50 , H01M2004/021
Abstract: Provided is a positive electrode material for a lithium ion battery, having the following general formula I: Li1+aNixCoyMnzMcM′dO2−bAb general formula I, wherein −0.05≤a≤0.3, 0.8≤x≤1, 0≤y≤0.2, 0≤z≤0.2, 0≤c≤0.01, 0≤d≤0.01, x+y+z+c+d=1, and 0≤b≤0.05; M and M′ are different from each other and each independently selected from at least one of La, Cr, Mo, Ca, Fe, Ti, Zn, Y. Zr, W, Nb, V, Mg, B, Al, Sr, Ba and Ta, A is selected from at least one of F, Cl, Br, I and S, and the number of crystallite boundaries N in primary particles of the positive electrode material is from 10.5 to 14.5, wherein N is calculated according to Equation I: N=DS/DX Equation I, wherein DS is an average size of the primary particles, as measured from scanning electron microscope (SEM) image of cross section of the positive electrode material, and DX is an average size of crystallites in the primary particles of the positive electrode material, as measured by an XRD test and calculated by the Scherrer equation. Also provided is a method for preparing the positive electrode material.
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公开(公告)号：US20240421296A1
公开(公告)日：2024-12-19
申请号：US18815853
申请日：2024-08-27
Inventor： Zongpu SHAO , Yafei LIU , Haoran YANG , Juntao HU , Yanbin CHEN
Abstract: The present application relates to the technical field of sodium-ion batteries. Provided are a sodium-ion cathode material, a preparation method and use thereof, a sodium-ion battery, a sodium-ion battery pack, and a device. The sodium-ion cathode material includes a matrix and a coating layer coated on the matrix. The matrix has a composition represented by formula I: Na1−x[NiyMnzMu]TivO2 formula I. The coating layer has a composition represented by formula II: Na2−βTi6−αM′αO13 formula II. The sodium-ion cathode material has characteristics of high ionic and electronic conductivity, strong structural stability, and strong chemical stability. At the same time, applying the composite cathode material to the sodium-ion batteries can effectively improve electrochemical performance of the battery.
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Patent Agency Ranking
公开(公告)号：US20240204173A1
公开(公告)日：2024-06-20
申请号：US18286305
申请日：2022-06-28
Inventor： Jingpeng WANG , Juntao HU , Yuqiang JIN , Chuangjiang NI , Xuequan ZHANG , Yafei LIU , Yanbin CHEN
CPC classification number: H01M4/366 , C01G53/50 , H01M4/505 , H01M4/525 , C01P2002/52 , C01P2004/03 , C01P2004/84 , C01P2006/16 , C01P2006/40
Abstract: The present disclosure relates to a positive electrode material and the preparation method therefor. The positive electrode material in accordance with the present disclosure is in a form of secondary particles having a core and a shell, wherein the core has a porosity greater than that of the shell. By forming larger particle voids in the cores of secondary particles, the present invention may reduce the stress concentration due to the volume deformation during the lithium ion intercalation/deintercalation, and improve the stability, rate performance, safety and cycle life of the material, which makes the material particularly suitable for lithium-ion batteries of high energy density.
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7.发明授权公开(公告)号：US11984586B1
公开(公告)日：2024-05-14
申请号：US18400312
申请日：2023-12-29
Inventor： Bohao Zhang , Yafei Liu , Yanbin Chen
CPC classification number: H01M4/366 , H01M4/0471 , H01M4/505 , H01M4/525 , H01M2004/021 , H01M2004/028 , H01M10/0525
Abstract: Disclosed are a surface-coated positive electrode material and a preparation method therefor, and a lithium ion battery. The surface-coated cathode material contains a substrate and a coating layer coated on a surface of the substrate, and the coating layer has a bimodal distribution of characteristic peaks at 31°-35° of 2θ tested by X-Ray Diffraction (XRD); and a ratio Ib/Ia of a peak intensity Ib of a secondary peak to a peak intensity Ia of a primary peak in a bimodal distribution is within a range of 0.8-1, preferably within a range of 0.97-1.
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公开(公告)号：US11955635B1
公开(公告)日：2024-04-09
申请号：US18497404
申请日：2023-10-30
Inventor： Yiseng Hu , Shanshan Li , Shunlin Song , Yafei Liu , Yanbin Chen
IPC: H01M4/525 , C30B1/12 , C30B29/22 , H01M10/0525 , H01M4/02
CPC classification number: H01M4/525 , C30B1/12 , C30B29/22 , H01M10/0525 , H01M2004/021 , H01M2004/028
Abstract: A single crystal multi-element positive electrode material and a preparation method therefor, and a lithium ion battery. The ratio of the length of the longest diagonal line to the length of the shortest diagonal line of the single crystal particles of the single crystal multi-element positive electrode material measured by an SEM is roundness R, and R≥1; and D10, D50 and D90 of the single crystal particles of the single crystal multi-element positive electrode material satisfy: K90=(D90−D10)/D50, and the product of K90 and R is 1.20-1.40. The single crystal multi-element positive electrode material is more round and regular in morphology, the single crystal particles have uniform size, less agglomeration and less adhesion. The material has the characteristics of high compaction density, good rate capability and excellent cycle performance.
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9.发明公开公开(公告)号：US20230202866A1
公开(公告)日：2023-06-29
申请号：US18091977
申请日：2022-12-30
Inventor： Tianmeng ZHAO , Shunlin SONG , Yafei LIU , Yanbin CHEN
IPC: C01G53/00 , H01M10/0525
CPC classification number: C01G53/50 , H01M10/0525 , C01P2006/40 , C01P2004/03
Abstract: A single-crystal-type multi-element positive electrode material, and a preparation method therefor and an application thereof.
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10.发明申请公开(公告)号：US20240421302A1
公开(公告)日：2024-12-19
申请号：US18815861
申请日：2024-08-27
Inventor： Zongpu SHAO , Yafei LIU , Yanbin CHEN
Abstract: Provided are an olivine composite cathode material, a preparation method, and a lithium-ion battery. The composite cathode material includes a matrix and a composite phase. The matrix has a composition represented by formula I: LixM1yMnzFe1-z-uM2u(PO4)w(ROa)bCv, where 0.5≤x
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