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公开(公告)号：US20230275213A1
公开(公告)日：2023-08-31
申请号：US18006720
申请日：2022-05-26
Inventor： Peng HE , Chengmao XIAO , Eming GUO , Jianguo REN , Xueqin HE
CPC classification number: H01M4/364 , H01M4/386 , H01M10/0525 , H01M4/134 , H01M4/587 , H01M4/133 , H01M2004/027
Abstract: The present disclosure relates to the field of negative electrode materials, and provide a negative electrode material, preparation method thereof, and a lithium ion battery, wherein the negative electrode material includes an aggregate, the aggregate includes an active material and a carbon material; wherein the aggregate has a porosity of ≤10%, and the aggregate has a compressive hardness of ≥100 Mpa. The negative electrode material provided by the present disclosure is effective in inhibiting the volume expansion of negative electrode material and improving the cycle performance of a battery.
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32.发明公开公开(公告)号：US20230207785A1
公开(公告)日：2023-06-29
申请号：US17996334
申请日：2022-03-10
Inventor： Wei XIE , Chunlei PANG , Zhiqiang DENG , Jianguo REN , Xueqin HE
IPC: H01M4/36 , H01M4/38 , H01M4/587 , H01M10/0525 , H01M4/134
CPC classification number: H01M4/366 , H01M4/386 , H01M4/587 , H01M4/382 , H01M10/0525 , H01M4/134 , H01M2004/027
Abstract: The present application relates to a silicon-oxygen composite anode material and the preparation method thereof, and a lithium-ion battery. Wherein the silicon-oxygen composite anode material comprises a silicon-oxygen material and a composite coating layer coating the surface of the silicon-oxygen material. The composite coating layer comprises a carbon material and a lithium-containing compound, the carbon material has pores, and the lithium-containing compound is filled in the pores. The silicon-oxygen composite anode material and the preparation method thereof are simple and low cost, which is also easy to conduct industrial production, moreover, the prepared silicon-oxygen composite anode material has excellent electrochemical cycle and expansion inhibition performance, which can prolong the life-span of a lithium ion battery.
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公开(公告)号：US20230132268A1
公开(公告)日：2023-04-27
申请号：US17918023
申请日：2022-02-17
Inventor： Wei XIE , Chunlei PANG , Zhiqiang DENG , Jianguo REN , Xueqin HE
IPC: H01M4/04 , H01M10/0525 , H01M4/48 , H01M4/62
Abstract: The present disclosure belongs to the technical field of lithium battery material, and relates to a negative electrode material, a method therefor and use thereof, the method comprises the following step: conducting a lithiation treatment on a negative electrode raw material in a lithiation solution; the lithiation solution comprises Li- aromatic composition; wherein the aromatic composition comprises unsubstituted aromatic compounds and substituted aromatic compounds; or the aromatic composition comprises at least two substituted aromatic compounds. The negative electrode material, method therefor and use thereof provided by the present disclosure can improve the depth and efficiency of lithium intercalation, reduce the loss of the irreversible capacity and improve the capacity of batteries.
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公开(公告)号：US20220367857A1
公开(公告)日：2022-11-17
申请号：US17623303
申请日：2021-05-27
Applicant: BTR NEW MATERIAL GROUP CO., LTD.
Inventor： Haihui ZHOU , Junhui LAI , Tao XU , Jianguo REN , Xueqin HE
IPC: H01M4/36 , H01M4/587 , H01M10/0525 , C01B32/21
Abstract: The present application provides a negative electrode material, a preparation method thereof, and a lithium ion battery. The negative electrode material comprises a first graphite core and a composite coating layer coated on the first graphite core. The composite coating layer comprises a second graphite inner layer formed on the surface of the first graphite core and an amorphous carbon outer layer formed on the surface of the second graphite inner layer. The second graphite inner layer is graphite microcrystal. The preparation method comprises: mixing the first graphite and the second graphite and performing the coating treatment to obtain the first graphite coated with the second graphite, wherein the second graphite is graphite microcrystals; and making the first graphite coated with the second graphite, coated with carbon, to obtain the negative electrode material. The negative electrode material provided in the present application utilizes the mutual cooperation between the second graphite inner layer and the amorphous carbon outer layer in the composite coating layer to make the negative electrode material have the high capacity, the low irreversible capacity, and the excellent power performance.
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Patent Agency Ranking
公开(公告)号：US20220352509A1
公开(公告)日：2022-11-03
申请号：US17623429
申请日：2021-04-21
Applicant: BTR NEW MATERIAL GROUP CO., LTD.
Inventor： Peng HE , Chengmao XIAO , Jianguo REN , Xueqin HE
IPC: H01M4/38 , H01M10/0525 , H01M4/04 , H01M4/62
Abstract: The present disclosure relates to a porous nano-silicon-based composite material, an anode and a lithium ion battery and a preparation method thereof. The silicon-based composite material comprises nano active particles and graphite, and the nano active particles comprise porous nano-silicon; The graphite has a pore structure in which the nano active particles are embedded, and/or the graphite has a layered structure in which the nano active particles are embedded; Compared with the traditional carbon-coated silicon anode material, the silicon-based anode material prepared by the present disclosure has the advantage of lower expansion rate and thus improves cycle performance.
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公开(公告)号：US20220259053A1
公开(公告)日：2022-08-18
申请号：US17623170
申请日：2020-10-28
Inventor： Lijuan QU , Zhiqiang DENG , Chunlei PANG , Jianguo REN , Xueqin HE
IPC: C01B33/24 , H01M10/0525
Abstract: This application provides an anode material, a preparation method thereof and a lithium ion battery. The anode material comprises SiOx and Li2Si2O5, wherein SiOx is dispersed in Li2Si2O5, and wherein 0≤x≤1.2. The preparation method comprises the following steps of: mixing a silicon oxide SiOy, a reducing lithium-containing compound and an auxiliary agent, and performing heat treatment to obtain the anode material, wherein the auxiliary agent comprises a nucleating conversion agent or a heat absorbent, and 0
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37.发明申请公开(公告)号：US20220109140A1
公开(公告)日：2022-04-07
申请号：US17428037
申请日：2020-09-25
Inventor： Chunlei PANG , Xiaotai SHI , Jingwei WANG , Jianguo REN , Xueqin HE
IPC: H01M4/36 , H01M10/0525 , H01M4/38 , H01M4/62 , H01M4/48 , H01M4/58 , C01B33/22 , C01B33/12 , C01B33/26
Abstract: Provided are a silicon composite negative electrode material and a preparation method therefor, and a lithium ion battery. The silicon composite negative electrode material comprises silicon composite particles and a carbon coating layer, wherein the carbon coating layer is coated on at least part of the surface of the silicon composite particle; and the silicon composite particle comprises silicon, a silicon oxide SiOx and a silicate containing the metal element M, wherein 0
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公开(公告)号：US20210159492A1
公开(公告)日：2021-05-27
申请号：US17059445
申请日：2019-02-18
Applicant: BTR NEW MATERIAL GROUP CO., LTD.
Inventor： Zhiqiang DENG , Chunlei PANG , Jianguo REN , Youyuan HUANG , Min YUE
IPC: H01M4/36 , H01M10/0525 , H01M4/48 , H01M4/62
Abstract: The present application provides a composite negative electrode material of a lithium ion battery, a preparation method thereof and the use thereof in a lithium ion battery. The composite negative electrode material includes a SiOx-based active material and a polycarbonate coating layer coated on a surface of the SiOx-based active material. The method includes: (1) preparing a monomer solution of unsaturated carbonate; (2) polymerizing the monomer in presence of a polymerization catalyst to obtain a polymer solution; and (3) adding a SiOx-based active material, water and a polymer catalyst to the polymer solution, and further polymerizing to coat the SiOx-based active material, to obtain the composite negative electrode material.
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公开(公告)号：US20200266443A1
公开(公告)日：2020-08-20
申请号：US16753094
申请日：2018-11-29
Applicant: BTR NEW MATERIAL GROUP CO., LTD.
Inventor： Xingyang LIU , Haihui ZHOU , Dongdong LI , Chengkun ZHOU , Jianguo REN , Youyuan HUANG , Min YUE
IPC: H01M4/587 , H01M10/0525 , H01M4/36 , C01B32/205 , C01B32/21
Abstract: A natural graphite-based modified composite material, a preparation method therefor, and a lithium ion battery comprising the modified composite material. The natural graphite-based modified composite material comprises natural graphite and non-graphitized carbon coated on the inner and outer surfaces of the natural graphite. The preparation method comprises: (1) subjecting spherical natural graphite to isotropic treatment; (2) performing granularity control and shaping treatment; (3) subjecting the inner surface and the outer surface of the material obtained in step (2) to simultaneous modification; and (4) performing carbonization, so as to obtain a natural graphite-based modified composite material.
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