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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：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：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：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：US20240343582A1
公开(公告)日：2024-10-17
申请号：US18684834
申请日：2022-11-15
申请人： GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP EV RECYCLING CO., LTD.
发明人： Maohua Feng , Changdong Li , Xingyu Wu , Dingshan Ruan , Baoye Liu
CPC分类号： C01B32/05 , H01M4/587 , C01P2004/03 , C01P2004/32 , C01P2004/62 , C01P2006/12 , C01P2006/40 , H01M2004/027
摘要： The present disclosure discloses a method for preparing a porous microsphere carbon negative electrode material and an application thereof, the method comprising steps of: mixing plant fiber with a halogenated lithium salt to obtain a mixed solid, heating the mixed solid and introducing an oxidizing gas to obtain a pre-dissociated product; mixing the pre-dissociated product with a dissociation solution and heating for reaction to obtain a dissociated cellulose solution; and adding a hybrid to the dissociated cellulose solution to obtain a hybrid solution, spray-drying the hybrid solution to obtain a microsphere precursor, and heating the microsphere precursor in an inert atmosphere to obtain the porous microsphere carbon negative electrode material.
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公开(公告)号：US20240063389A1
公开(公告)日：2024-02-22
申请号：US18385416
申请日：2023-10-31
申请人： GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP EV RECYCLING CO., LTD.
发明人： Xingyu Wu , Changdong Li , Maohua Feng , Dingshan Ruan , Bin Li , Qianyi Tan
CPC分类号： H01M4/587 , C01B32/05 , C01P2002/72 , C01P2004/03 , C01P2006/12 , C01P2006/40 , H01M2004/027
摘要： The present disclosure discloses a preparation method of a hard carbon (HC) anode material and use thereof. The preparation method includes the following steps: mixing a substance A, a first alcohol liquid, and an oxidant to obtain a peroxide gel of the substance A, and dissolving a substance B in a second alcohol liquid to obtain an amino-containing solution; mixing the peroxide gel of the substance A with the amino-containing solution to allow a reaction to obtain a post-reaction slurry; and lyophilizing the post-reaction slurry to obtain a dry powder, subjecting the dry powder to calcination in a protective atmosphere to obtain a calcined material, soaking the calcined material in an acid liquid, and water-washing and drying to obtain the HC anode material.
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公开(公告)号：US20240055684A1
公开(公告)日：2024-02-15
申请号：US18265357
申请日：2021-10-13
申请人： GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP EV RECYCLING CO., LTD.
发明人： Shili Zheng , Dingshan Ruan , Changdong Li , Ying Zhang , Zhi Sun , Yang Zhang , Xiaojian Wang
CPC分类号： H01M10/54 , C01B25/375
摘要： The invention belongs to the field of battery material recovery, and discloses a preparation method and application of heterosite phosphate. The method comprises the following steps: mixing lithium iron phosphate with a solvent, adding an acid solution, and adjusting the pH to obtain an acidic lithium iron phosphate liquid; adding a transition metal additive to the acidic lithium iron phosphate liquid, and performing leaching in an intensifying micro-environment, followed by filtrating to obtain heterosite iron phosphate and a lithium-rich solution. The leaching rate of lithium in the leaching solution reaches 90.5-99.9%, and both of the iron and phosphorus content in the leaching solution are less than 0.1 ppm; the recovered heterosite iron phosphate has a purity of 99.9%, and the recovery rate of the heterosite iron phosphate is 99.3%.
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公开(公告)号：US20230411596A1
公开(公告)日：2023-12-21
申请号：US18229186
申请日：2023-08-02
申请人： GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP EV RECYCLING CO., LTD.
发明人： Xingyu Wu , Changdong Li , Dingshan Ruan , Linlin Mao , Maohua Feng , Bin Li
IPC分类号： H01M4/1391 , H01M10/0525 , H01M10/0587 , H01M50/536 , H01M4/131 , H01M4/04 , H01M50/105
CPC分类号： H01M4/1391 , H01M10/0525 , H01M10/0587 , H01M50/105 , H01M4/131 , H01M4/0416 , H01M4/0435 , H01M50/536
摘要： The invention belongs to the technical field of batteries, and discloses a preparation method and application of a lithium cobalt oxide soft-pack battery. The preparation method comprises the following steps: preparation of a lithium cobalt oxide positive electrode; preparation of a graphite negative electrode; preparation of an aluminum plastic film; screening and tab welding the positive and negative electrode, then winding core and packing, injecting an electrolyte to a resulting pack, perform first sealing, formation, second sealing; followed by capacity grading to obtain the lithium cobalt oxide soft pack battery. The preparation method for the lithium cobalt oxide soft-pack battery in a laboratory environment at room temperature provided by the present invention has simple operation and low environmental requirements, can be used in laboratories without dry room conditions, and reduces research and development cost and laboratory maintenance cost.
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公开(公告)号：US20230357050A1
公开(公告)日：2023-11-09
申请号：US18223023
申请日：2023-07-17
申请人： GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP EV RECYCLING CO., LTD.
发明人： Peichao Ning , Changdong Li , Qiang Li , Ruokui Chen , Dingshan Ruan , Song Chen
CPC分类号： C01G53/50 , H01M10/54 , H01M4/505 , H01M4/525 , C01P2006/40 , C01P2004/03 , C01P2002/85 , C01P2002/72 , H01M2004/028
摘要： The invention belongs to the technical field of battery material recycling and discloses a regeneration method of waste ternary cathode materials and application thereof. The regeneration method comprises the following steps: drying, crushing, and sieving a waste ternary cathode material to obtain a cathode powder; adding the cathode powder to a alkali liquid, reacting, stirring, washing, and filtering to obtain a filter residue; drying the filter residue, then mixing with carbonized pitch, and performing reducing calcination to obtain a mixture; after testing the content of nickel, cobalt, manganese, aluminum, and lithium in the mixture, adding a nickel source, a cobalt source, a lithium source, a manganese source, polyethylene glycol, ball milling with water to obtain a suspension; spray granulating the suspension to obtain a ternary precursor; subjecting the precursor to two-stage calcination to obtain a regenerated ternary cathode material.
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