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1.发明公开公开(公告)号：US20230378444A1
公开(公告)日：2023-11-23
申请号：US18247929
申请日：2021-10-13
Applicant: BTR NEW MATERIAL GROUP CO., LTD.
Inventor： Peng HE , Chengmao XIAO , Eming GUO , Jianguo REN , Xueqin HE
IPC: H01M4/36 , H01M4/583 , H01M4/38 , H01M10/0525
CPC classification number: H01M4/366 , H01M4/583 , H01M4/386 , H01M10/0525 , H01M2004/021
Abstract: The present application relates to a field of anode material, and a silicon carbon composite anode material and preparation method thereof, and a lithium ion battery provided. The silicon carbon composite anode material includes a silicon-based active particle, a conductive material, and a carbon coating layer, where the carbon coating layer is present on surface of the silicon-based active particle and/or the conductive material; and a semi-width of an X-ray diffraction angle (2θ) of the silicon-based active particle on a crystal face (111) is greater than or equal to 0.5 degree when X-ray diffraction of the silicon-based active particle is tested with CuKα ray. The silicon carbon composite anode material and preparation method thereof, and a lithium ion battery can effectively inhibit volume expansion of anode material and improve cycle performance of battery.
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公开(公告)号：US20230075032A1
公开(公告)日：2023-03-09
申请号：US17800340
申请日：2021-04-07
Inventor： Zongzhou CHE , Peng HE , Jianguo REN , Xueqin HE
Abstract: The present disclosure provides a multi-component composite anode material, a method for preparing the same, a lithium-ion battery anode material, and a lithium-ion battery. The multi-component composite anode material includes a core and a shell covering surface of the core; the core includes a graphite substrate and an embedding component embedded in the graphite substrate. The embedding component include nano silicon, lithium titanate, and a first non-graphitic carbon material. The shell includes a second non-graphitic carbon material. The method includes: calcining a first precursor formed by a titanium source, nano-silicon, a lithium source and graphite to prepare a second precursor containing lithium titanate; and carbon-coating the second precursor with a carbon source. The multi-component composite anode material has high specific capacity, high initial coulombic efficiency, ultra-low volume expansion, excellent cycle performance and excellent rate performance.
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公开(公告)号：US20220393171A1
公开(公告)日：2022-12-08
申请号：US17776177
申请日：2021-09-09
Applicant: BTR NEW MATERIAL GROUP CO., LTD.
Inventor： Haihui ZHOU , Liangyou HU , Xiujun PAN , Dongdong LI , Dianchen ZHANG , Jianguo REN , Xueqin HE
Abstract: A graphite anode material, an anode, a lithium ion battery and preparation methods thereof. The graphite anode material includes a natural graphite core, a carbon coating layer, and a graphitizing filler. The natural graphite core has pores. The graphitizing filler is filled in the pores inside the natural graphite core. The graphitizing filler further forms the carbon coating layer. The preparation method includes: mixing natural graphite with a filler, and then pulverizing to obtain a graphite powder body; and graphitizing the graphite powder body in a protective atmosphere to obtain a graphite anode material. The preparation method reduces material turnover and residual loss, and achieves simple process and high production efficiency. The anode and lithium ion battery prepared have high first efficiency and excellent cycling performance.
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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.
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公开(公告)号：US20240047733A1
公开(公告)日：2024-02-08
申请号：US18546086
申请日：2022-12-01
Applicant: BTR NEW MATERIAL GROUP CO., LTD.
Inventor： Zongzhou CHE , Peng HE , Chengmao XIAO , Eming GUO , Jianguo REN , Xueqin HE
IPC: H01M10/0525 , H01M4/36 , H01M4/38 , H01M4/583 , H01M4/485
CPC classification number: H01M10/0525 , H01M4/362 , H01M4/386 , H01M4/583 , H01M4/485 , H01M2004/027
Abstract: The present disclosure relates to an anode material, a method for preparing the same, and a lithium ion battery, which belong to the technical field of energy storage materials. The anode material includes a LixMySiO4 material, a carbon material and nano-silicon. The LixMySiO4 material and the carbon material has a network structure, independently forming a first skeleton and a second skeleton in the anode material respectively. The first skeleton and the second skeleton are entangled with each other, and the nano-silicon is distributed in the matrix or/and on the surface of LixMySiO4 material. In the LixMySiO4 material, the values of x and y satisfy charge balance, and M includes a metal element capable of reducing silicon oxides, the metal element excludes Li. The anode material has better electrical conductivity, more stable structure, lower volume expansion, higher electrical conductivity, higher first efficiency and excellent rate performance.
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Patent Agency Ranking
6.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
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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
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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.
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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
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10.发明申请公开(公告)号：US20200243846A1
公开(公告)日：2020-07-30
申请号：US16652238
申请日：2018-09-30
Applicant: BTR NEW MATERIAL GROUP CO., LTD.
Inventor： Peng HE , Eming GUO , Jianguo REN , Youyuan HUANG , Min YUE
Abstract: A carbon matrix composite material, a preparation method therefor and a battery comprising the same. The carbon matrix composite material comprises micron-sized soft carbon, micron-sized hard carbon, a nano-active material, a first carbon coating layer and a second carbon coating layer, wherein the first carbon coating layer is coated on a surface of the nano-active material to form composite particles; the composite particles are dispersed on the surfaces of the soft carbon and the hard carbon, and in the second carbon coating layer; and the second carbon coating layer coats soft carbon, the hard carbon and the composite particles.
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