-
公开(公告)号：US20220115652A1
公开(公告)日：2022-04-14
申请号：US17420570
申请日：2020-10-28
Applicant: BTR NEW MATERIAL GROUP CO., LTD.
Inventor： Chunlei PANG , Lijuan QU , Zhiqiang DENG , Jianguo REN , Xueqin HE
Abstract: The present application provides a silicon-oxygen composite negative electrode material and method for preparation thereof and lithium-ion battery. The silicon-oxygen composite negative electrode material comprises a silicon-oxygen composite negative electrode material comprising SiOx, non-Li2Si2O5 lithium-containing compound, and Li2Si2O5; said Li2Si2O5 is coated on the surface of the non-Li2Si2O5 lithium-containing compound; 0≤x≤1.2. The preparation method comprises: mixing a first silicon source with a reducing lithium source and roasting, to obtain a composite material containing a non-Li2Si2O5 lithium-containing compound; the composite material containing the non-Li2Si2O5 lithium-containing compound is fused with a second silicon source and then subjected to heat treatment to obtain a silicon-oxygen composite negative electrode material. The silicon-oxygen composite anode material provided by the present application is coated with Li2Si2O5, solving the problem in the prior art of a negative electrode material producing strong alkaline or easily soluble by-products in water after pre-lithiation and affecting subsequent processing.
-
公开(公告)号：US20250070138A1
公开(公告)日：2025-02-27
申请号：US18941450
申请日：2024-11-08
Applicant: BTR NEW MATERIAL GROUP CO., LTD.
Inventor： Lijuan QU , Chunlei PANG , Jianguo REN , Youyuan HUANG , Min YUE
IPC: H01M4/36 , C01B33/113 , H01M4/48 , H01M4/58 , H01M4/587
Abstract: A negative electrode material of a lithium ion secondary battery includes a carbon coating layer and a core layer. The core layer comprises lithium polysilicate and silicon oxide. A preparation method for the negative electrode material and a use therefor are described. The negative electrode material has high first coulomb efficiency, long cycle performance, excellent rate performance, and high safety.
-
3.发明公开公开(公告)号：US20240097138A1
公开(公告)日：2024-03-21
申请号：US17768034
申请日：2021-09-22
Inventor： Zhiqiang DENG , Wei XIE , Chunlei PANG , Jianguo REN , Xueqin HE
IPC: H01M4/62 , H01M4/36 , H01M4/485 , H01M10/0525
CPC classification number: H01M4/628 , H01M4/366 , H01M4/485 , H01M4/625 , H01M10/0525 , H01M2004/027
Abstract: Provided are a composite material and a preparation method thereof, a negative electrode material, and a lithium ion battery. The negative electrode material includes at least one composite material, and the lithium ion battery includes at least one composite material. The composite material has a core-shell structure composed of an inner core and a hydrophobic coating layer, with the inner core including at least one lithium-containing silicon oxide, and the hydrophobic coating layer being used to cover the inner-core material.
-
4.发明公开公开(公告)号：US20240021819A1
公开(公告)日：2024-01-18
申请号：US18037182
申请日：2022-06-23
Inventor： Xi CHEN , Chunlei PANG , Zhiqiang DENG , Tengyu LIANG , Jianguo REN , Xueqin HE
CPC classification number: H01M4/583 , H01M4/0471 , H01M4/0421 , H01M2004/027 , H01M2004/021
Abstract: A silicon oxygen material, a negative electrode material, and its preparation method, and a lithium ion battery is disclosed. The silicon oxygen material includes a silicon oxide having a chemical formula SiOx, where 0
-
公开(公告)号：US20220328816A1
公开(公告)日：2022-10-13
申请号：US17615746
申请日：2020-11-13
Inventor： Zhiqiang DENG , Lijuan QU , Chunlei PANG , Jianguo REN , Xueqin HE
IPC: H01M4/48 , H01M4/04 , H01M10/0525
Abstract: A negative electrode material and a preparation method therefor, and a lithium ion battery are provided. The negative electrode material comprises nanometer silicon, a silicon oxide, and crystalline Li2Si2O5, wherein the average grain size is Li2Si2O5 is lower than 20 nm. The preparation method comprises: performing heat treatment on a silicon oxide material under a protective atmosphere or vacuum to obtain a silicon oxide material subjected to heat treatment and mixing the heat-treated silicon oxide material with a lithium source under the protective atmosphere or vacuum, and performing sintering to obtain a negative electrode material, the negative electrode material comprising the nanometer silicon, the silicon oxide, and the crystalline Li2Si2O5
-
Patent Agency Ranking
公开(公告)号：US20210384510A1
公开(公告)日：2021-12-09
申请号：US17286016
申请日：2019-08-01
Applicant: BTR NEW MATERIAL GROUP CO., LTD.
Inventor： Zhiqiang DENG , Lijuan QU , Chunlei PANG , Jianguo REN , Min YUE , Xueqin HE
Abstract: A negative electrode material includes a composite matrix material and a carbon coating coated on the composite matrix material. The composite matrix material includes lithium silicate, silicon oxide, an activator, and silicon embedded in the lithium silicate and the silicon oxide.
-
公开(公告)号：US20210226202A1
公开(公告)日：2021-07-22
申请号：US16760550
申请日：2018-11-29
Applicant: BTR NEW MATERIAL GROUP CO., LTD.
Inventor： Tengyu LIANG , Chunlei PANG , Jianguo REN , Min YUE
IPC: H01M4/48 , H01M10/0525 , H01M4/36 , H01M4/587
Abstract: Disclosed are a lithium ion battery negative electrode material and a preparation method therefor. The negative electrode material comprises SiOy (0.2
-
公开(公告)号：US20250038184A1
公开(公告)日：2025-01-30
申请号：US18914449
申请日：2024-10-14
Inventor： Xi CHEN , Chunlei PANG , Yiming KONG , Jianguo REN , Xueqin HE
IPC: H01M4/36 , C01B32/05 , C01B32/956 , H01M4/02 , H01M4/587
Abstract: A composite negative electrode material includes an inner core and a coating layer on the surface of the inner core, the inner core includes a porous carbon and Si particles distributed on the surface and/or in pores of the porous carbon. The composite negative electrode material is provided with micropores and mesopores, a ratio of the pore volume of the micropores to the pore volume of the mesopores is (2-50):(50-98). An oil absorption value of the composite negative electrode material is smaller than an oil absorption value of the composite negative electrode material after removing the Si particles, and based on the oil absorption value of the composite negative electrode material after removing the Si particles being 100%, a difference between the oil absorption value of the composite negative electrode material after removing the Si particles and the oil absorption value of the composite negative electrode material is ≥10%.
-
公开(公告)号：US20240304820A1
公开(公告)日：2024-09-12
申请号：US18546417
申请日：2022-12-08
Inventor： Xi CHEN , Chunlei PANG , Tengyu LIANG , Jianguo REN , Xueqin HE
IPC: H01M4/62 , C01B32/05 , C01B32/158 , H01M4/02 , H01M4/139 , H01M4/36 , H01M4/48 , H01M10/0525 , H01M10/42
CPC classification number: H01M4/625 , C01B32/05 , C01B32/158 , H01M4/139 , H01M4/366 , H01M4/483 , H01M10/0525 , H01M10/4235 , C01B2202/22 , C01B2202/36 , C01P2002/02 , C01P2004/13 , C01P2004/54 , C01P2006/40 , H01M2004/021 , H01M2004/027
Abstract: An anode material, a preparation method thereof, and application provided. The anode material includes an active substance, and a buffer layer and a carbon layer both on surface of the active substance, where the buffer layer is formed on surface of the active substance, and the carbon layer includes an amorphous carbon material on surface of the buffer layer, and a carbon nano-material extending in a direction toward and/or away from the buffer layer. In particle structure of the above anode material, the buffer layer has a certain toughness, which can effectively buffer volume expansion of the anode material. Meanwhile, the extension of the carbon nano-material also provides a certain buffer effect, which can further buffer volume expansion of the anode material, reduce stress among the anode material particles during charging and discharging process, thereby improving structure stability of the anode material, thereby improving cycling capacity retention of battery.
-
公开(公告)号：US20240182313A1
公开(公告)日：2024-06-06
申请号：US18549336
申请日：2021-11-04
Applicant: BTR NEW MATERIAL GROUP CO., LTD.
Inventor： Chunlei PANG , Tengyu LIANG , Jianguo REN , Xueqin HE
CPC classification number: C01B33/20 , H01M4/366 , H01M4/485 , H01M4/583 , H01M10/0525 , C01P2002/82 , C01P2004/32 , C01P2004/61 , C01P2004/64 , C01P2004/84 , C01P2006/12 , C01P2006/40 , H01M2004/021 , H01M2004/027
Abstract: The present disclosure relates to the field of anode materials, and provides a composite anode material, a method for preparating the composite anode material, and a lithium-ion battery. The composite anode material includes a silicon oxide material and a carbon coating layer, which is located on the surface of the silicon-oxygen material. A physical adsorption-desorption isotherm of the composite anode material is of a type II or type III, and a physical adsorption-desorption isotherm of the silicon-oxygen material is of a type IV or type V. The composite anode material, the method for preparating the same, and the lithium-ion battery provided in the present disclosure can effectively improve rate performance and cycling stability of a lithium battery.
-
-
-
-
-
-
-
-
-
Search Results
19
records
(took 0.018 seconds)
