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1.发明公开公开(公告)号：US20240351911A1
公开(公告)日：2024-10-24
申请号：US18682434
申请日：2022-04-29
申请人： GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP EV RECYCLING CO., LTD.
发明人： Bin Li , Changdong Li , Weijian Liu , Xingyu Wu , Dingshan Ruan , Yong Cai
IPC分类号： C01G51/00
CPC分类号： C01G51/50 , C01P2004/03 , C01P2004/51 , C01P2004/61 , C01P2006/40 , C01P2006/80
摘要： Disclosed in the present invention is a method for surface modification of a lithium transition metal oxide positive electrode material, including: adding a first additive, a second additive, and a lithium transition metal oxide to water to obtain a first slurry, the first additive being a lithium-containing phosphate, and the second additive being an acidic solution of a Y3+ or Al3+ salt; dropwise adding a third additive to the firs slurry to obtain a second slurry, the third additive being an acidic solution of a TiO2+ or ZrO2+ salt; dropwise adding a fourth additive to the second slurry to obtain a third slurry, the fourth additive being an acidic solution of a AlO2− salt; and performing centrifugation and drying on the third slurry to obtain an intermediate product, mixing the intermediate product with a large-particle positive electrode material, and performing sintering to obtain a surface-modified lithium transition metal oxide material.
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公开(公告)号：US12113215B2
公开(公告)日：2024-10-08
申请号：US18555558
申请日：2022-07-29
申请人： GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP EV RECYCLING CO., LTD.
发明人： Haijun Yu , Yinghao Xie , Aixia Li , Xuemei Zhang , Changdong Li
CPC分类号： H01M4/58 , C01C3/12 , C01P2004/03 , C01P2006/40 , H01M2004/028
摘要： Disclosed is a preparation method for a Prussian blue sodium-ion battery positive electrode material, comprising: adding a first nonionic surfactant and an antioxidant into a sodium ferrocyanide solution to obtain a first solution; adding a second nonionic surfactant into a transition metal salt solution to obtain a second solution; in a protective atmosphere, adding the second solution into the first solution for a precipitation reaction; aging after the reaction has finished; collecting a precipitate, washing same, and carrying out vacuum drying on the washed precipitate; then soaking same in an alcohol solution containing sodium alkoxide; and then filtering same and steam drying to obtain a Prussian blue sodium ion battery positive electrode material. The method may relieve vacuum drying pressure and shorten drying time.
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3.发明授权公开(公告)号：US12027682B2
公开(公告)日：2024-07-02
申请号：US18260032
申请日：2022-08-11
申请人： GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP EV RECYCLING CO., LTD.
发明人： Haijun Yu , Jiangdong Chen , Yinghao Xie , Jialei Xu , Benben Wu , Changdong Li
IPC分类号： H01M10/54 , C04B35/622 , C04B35/626
CPC分类号： H01M10/54 , C04B35/62204 , C04B35/62675 , C04B2235/349 , C04B2235/425 , C04B2235/442 , C04B2235/6562 , C04B2235/6567
摘要： A method for preparing a refractory material from waste battery residues. The method comprises the following steps: (1) disassembling waste batteries, then sorting same to obtain positive and negative electrode powders, leaching the positive and negative electrode powders with an acid, filtering same to obtain a graphite slag, and then subjecting the filtrate to copper removal, followed by the addition of an alkali for a precipitation reaction, wherein the resulting precipitate is an iron-aluminum slag; (2) wrapping the graphite slag obtained in step (1) with wet clay to form an inner core material, then mixing wet clay with the iron-aluminum slag, wrapping the inner core material with same, and aging the wrapped inner core material to obtain a blank; (3) pre-sintering, calcining and cooling the blank prepared in step (2) to obtain a fired product; and (4) washing and drying the fired product to obtain the refractory material.
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公开(公告)号：US20240021904A1
公开(公告)日：2024-01-18
申请号：US18374022
申请日：2023-09-28
申请人： GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP EV RECYCLING CO., LTD.
发明人： Jinliang Duan , Changdong Li , Yang Xia , Dingshan Ruan , Ruokui Chen , Yanchao Qiao
CPC分类号： H01M10/54 , C22B1/005 , C01D15/00 , C01G49/16 , C01P2002/72 , C01P2004/03
摘要： The present disclosure belongs to the technical field of battery recycling, and discloses a recycling method and use of lithium iron phosphate (LFP) waste. The method includes the following steps: mixing the LFP waste with water to prepare a slurry; adjusting a pH of the slurry to higher than 7.0 with an alkali, and heating to react; filtering a resulting mixture to obtain a filter residue; dissolving the filter residue in an acid, and filtering to obtain a filtrate; adding an oxalate-containing solution to react, and aging and filtering a resulting mixture to obtain a filter cake and a precipitation mother liquor; and subjecting the filter cake to slurrying, washing, and free water removal to obtain ferrous oxalate.
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公开(公告)号：US20240018014A1
公开(公告)日：2024-01-18
申请号：US18230210
申请日：2023-08-04
申请人： GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP EV RECYCLING CO., LTD.
发明人： Yinghao Xie , Haijun Yu , Changdong Li
CPC分类号： C01G53/44 , C01P2004/03 , H01M4/525 , H01M4/505
摘要： The present disclosure discloses a high-performance lithium-nickel-manganese-cobalt oxide (LNMCO) cathode material for power batteries and a preparation method thereof, and belongs to the technical field of lithium-ion battery (LIB) materials. The preparation method of an LNMCO cathode material of the present disclosure combines a melting and mixing method, a spray drying method, a sol-gel method, and a high-temperature solid-phase method to achieve thorough mixing of various components of a precursor, such that a prepared product has a uniform particle size, excellent electrochemical performance, and high cycling stability. The method has simple operation steps, low raw material cost, small time consumption, and high production efficiency, and can realize industrialized large-scale production. The present disclosure also provides an LNMCO cathode material prepared by the method, which has high specific charge/discharge capacity, thermal stability, and cycling stability.
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公开(公告)号：US20240018012A1
公开(公告)日：2024-01-18
申请号：US18373998
申请日：2023-09-28
申请人： GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP EV RECYCLING CO., LTD.
发明人： Haihan Hu , Changdong Li , Genghao Liu , Xinghua Lu , Dingshan Ruan , Yong Cai
IPC分类号： C01G51/04
CPC分类号： C01G51/04 , C01P2006/12
摘要： The present disclosure belongs to the technical field of metal oxide materials, and discloses a synthesis method of cobalt hydroxide and cobalt hydroxide. The synthesis method includes: (1) stirring and heating ammonium citrate, introducing a protective gas, adding a cobalt salt and a mixed alkali liquor to allow a reaction, and adjusting a pH to obtain a cobalt hydroxide slurry; and (2) subjecting the cobalt hydroxide slurry to alkali-leaching, filtering, and slurrying a resulting filter residue; and washing a resulting slurry with a detergent, and drying the resulting slurry to obtain the cobalt hydroxide. In the present disclosure, ammonium citrate is used as a base solution, and a cobalt solution and a mixed alkali liquor are added to synthesize a cobalt hydroxide slurry in one step under a protective atmosphere.
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公开(公告)号：US11872595B2
公开(公告)日：2024-01-16
申请号：US18029654
申请日：2021-05-13
申请人： HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP EV RECYCLING CO., LTD.
发明人： Jieming Zhao , Qinxue Gong , Ruokui Chen , Qiang Li , Changdong Li
IPC分类号： B07B15/00 , B09B3/35 , B03C1/005 , B09B101/16
CPC分类号： B07B15/00 , B03C1/005 , B09B3/35 , B07B2220/04 , B07B2230/01 , B09B2101/16
摘要： Disclosed are a wet sorting process for a waste lithium battery and application thereof, which belong to the field of battery material recycling. The wet sorting process includes the following steps of carrying out wet ball milling on a sorting material of a waste lithium battery to obtain a ball-milled product, screening the ball-milled product to obtain a coarse-grained screened material, a medium-grained screened material and a fine-grained screened material, carrying out wet ball milling, screening, magnetic separation and table concentration on the medium-grained screened material to obtain copper, aluminum and a steel shell, and carrying out flotation, magnetic separation and table concentration on the fine-grained screened material to obtain cathode material powder, graphite, copper and aluminum.
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公开(公告)号：US20230382760A1
公开(公告)日：2023-11-30
申请号：US18231805
申请日：2023-08-09
申请人： GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP EV RECYCLING CO., LTD.
发明人： Xinghua Lu , Changdong Li , Dingshan Ruan , Genghao Liu , Yong Cai , Bin Li
IPC分类号： C01G51/06
CPC分类号： C01G51/06 , C01P2006/80 , C01P2004/51 , C01P2004/61 , C01P2006/40
摘要： The present disclosure discloses a preparation method of platy aluminum-doped cobalt carbonate and use thereof. The preparation method includes the following steps: S1: mixing a cobalt salt, an aluminum salt, and a polyhydroxy compound to prepare a mixed solution; S2: mixing the mixed solution with an ammonium bicarbonate solution, adjusting a pH, and heating and stirring to allow a reaction to obtain a seed crystal solution; and S3: adding the mixed solution and an ammonium bicarbonate solution to the seed crystal solution, adjusting a pH, and heating and stirring to allow a reaction, during which a solid content in a slurry is controlled at 20% to 40% until a particle size in the slurry grows to a target value; and separating out, washing, and drying a solid phase to obtain the platy aluminum-doped cobalt carbonate.
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公开(公告)号：US20230303407A1
公开(公告)日：2023-09-28
申请号：US18202921
申请日：2023-05-27
申请人： GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP EV RECYCLING CO., LTD.
发明人： Wenyu Zhao , Dingshan Ruan , Jingjing Liu , Guohan Huang , Yang Xia , Changdong Li
IPC分类号： C01G53/00 , H01M10/0525
CPC分类号： C01G53/50 , H01M10/0525 , C01G53/006 , C01P2006/40 , C01P2004/61
摘要： Disclosed are a ternary cathode material and a preparation method and application thereof. The ternary cathode material has a chemical formula of LiNix CoyMn(1-x-y)MO2, wherein 0.5≤x≤1, y≥0, M is at least one selected from the group of niobium, boron and titanium. In the present disclosure, through the reaction between the niobium compound, the boron compound or the titanium compound with the residual lithium on the surface of the calcinated materials, the micro powder deposits in the defect position of the lithium crystal lattice on the surface of the calcinated material, so that the content of the micro powder can be greatly reduced. Meanwhile part of the surface residual lithium is consumed by the reaction to generate lithium niobate, lithium borate or lithium titanate which is uniformly coated on the surface of the material, thereby obtaining the ternary cathode material with excellent cycle and rate performance.
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公开(公告)号：US20240351909A1
公开(公告)日：2024-10-24
申请号：US18687314
申请日：2023-02-08
申请人： GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP EV RECYCLING CO., LTD.
发明人： Haijun Yu , Yinghao Xie , Aixia Li , Xuemei Zhang , Changdong Li
CPC分类号： C01G51/42 , C01G51/04 , H01M4/525 , C01P2004/03 , C01P2004/32 , C01P2006/12 , C01P2006/40 , H01M2004/028
摘要： The present disclosure discloses a porous and spherical cobalt oxide particle and a preparation method therefor. The preparation method includes the following steps: (1) mixing a cobalt salt solution, thiourea, and urea to obtain a mixed solution; (2) heating the mixed solution obtained in step (1) to allow a reaction in an aerobic atmosphere; (3) conducting solid-liquid separation (SLS) to obtain a solid product, and subjecting the solid product to calcination in an aerobic atmosphere to obtain a calcined material; and (4) washing and drying the calcined material obtained in step (3) to obtain the porous and spherical cobalt oxide particle. The cobalt oxide particle prepared by the preparation method has a larger specific surface area (SSA), which can significantly improve a specific capacity of a battery.
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