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公开(公告)号：EP4360157A1
公开(公告)日：2024-05-01
申请号：EP22829454.2
申请日：2022-06-27
发明人： GRATZ, Eric , WANG, Yan
CPC分类号： Y02E60/10 , Y02W30/84 , H01M10/54 , H01M10/052 , H01M10/0562
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公开(公告)号：EP4431463A1
公开(公告)日：2024-09-18
申请号：EP23184090.1
申请日：2023-07-07
发明人： LIU, Yadong , DENG, Haixia , GRATZ, Eric , MISTRY, Dhiren , PARMA, Anil
摘要： A battery recycling process aggregates a recycling stream including charge material metals from exhausted Li-ion batteries and generates recycled battery charge material having comparable or improved cycle life as well as recycled charge material precursor having fewer cracking defects using doping substances in a coprecipitation phase in the recycling sequence. In a coprecipitation process, a solution of comingled charge material metals is produced, the ratio of the charge material metals is adjusted based on recycled battery specifications, and a relatively small quantity of a doping salt is added.
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公开(公告)号：EP4431462A1
公开(公告)日：2024-09-18
申请号：EP23184089.3
申请日：2023-07-07
发明人： LIU, Yadong , DENG, Haixia , GRATZ, Eric , MISTRY, Dhiren , PARMA, Anil
CPC分类号： C01G53/006 , C01P2002/5220130101 , H01M6/52 , H01M4/505 , H01M4/525
摘要： A battery recycling process aggregates a recycling stream including charge material metals from exhausted Li-ion batteries and generates recycled battery charge material having comparable or improved cycle life as well as recycled charge material precursor having fewer cracking defects using doping substances in a coprecipitation phase in the recycling sequence. In a coprecipitation process, a solution of comingled charge material metals is produced, the ratio of the charge material metals is adjusted based on recycled battery specifications, and a relatively small quantity of a doping salt is added.
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公开(公告)号：EP4372113A1
公开(公告)日：2024-05-22
申请号：EP22214480.0
申请日：2022-12-19
发明人： Kim, Kee-Chan , Gratz, Eric
摘要： Recycling of charge material for an NMC (Ni, Mn, Co) battery recovers lithium from a recycled battery stream by roasting a black mass from the recycled stream in a partial oxygen environment at a temperature based on the thermal reduction of cathode material and reacting carbon in an anode material with lithium in the cathode material, and then leaching the lithium from the roasted black mass for forming a lithium leach solution. Lithium is recovered by heating the lithium leach solution, precipitating the lithium carbonate based on decreased solubility of the leached lithium carbonate at the increased temperature.
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公开(公告)号：EP4345980A8
公开(公告)日：2024-05-08
申请号：EP22215023.7
申请日：2022-12-20
发明人： Kim, Kee-Chan , Matthew, Eggert
IPC分类号： H01M10/54
CPC分类号： H01M10/54
摘要： Recycling of nickel-metal hydride (NiMH) batteries extracts substantially pure nickel based on adding a leach agent to granular cathode material resulting from agitation of the NiMH batteries to form a leach solution. A pH of the leach solution is maintained for precipitating iron, aluminum and lanthanide rare earth elements (REE) for yielding a nickel solution for forming a cathode material precursor in a recycled battery, often with a high nickel content.
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公开(公告)号：EP4353853A1
公开(公告)日：2024-04-17
申请号：EP22215024.5
申请日：2022-12-20
发明人： Kim, Kee-Chan , Gratz, Eric
摘要： A battery recycling process recovers lithium from nickel-rich cathode material in a recycling stream of end-of-life batteries. A dilute acid leach of a high nickel content cathode material contains a mixture of sulfuric acid based on a molar quantity of lithium in the cathode material. The highly selective leach generates a lithium rich solution with a small amount of nickel removable by nanofiltration to achieve a highly efficient recovery of the lithium contained in the recycling stream. A quantity of the leach acid based on the lithium content and a quantity of water based on a total black mass of the recycling stream results in a highly selective, near pure lithium leach when the recycling stream results from high nickel NMC batteries such as 811.
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公开(公告)号：EP4345980A1
公开(公告)日：2024-04-03
申请号：EP22215023.7
申请日：2022-12-20
发明人： Kim, Kee-Chan
IPC分类号： H01M10/54
摘要： Recycling of nickel-metal hydride (NiMH) batteries extracts substantially pure nickel based on adding a leach agent to granular cathode material resulting from agitation of the NiMH batteries to form a leach solution. A pH of the leach solution is maintained for precipitating iron, aluminum and lanthanide rare earth elements (REE) for yielding a nickel solution for forming a cathode material precursor in a recycled battery, often with a high nickel content.
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公开(公告)号：EP4450459A1
公开(公告)日：2024-10-23
申请号：EP24159512.3
申请日：2024-02-23
发明人： TANG, Yilun , GRATZ, Eric , ASHOUR, Rakan , VENKATARAMAN, Karthik
IPC分类号： C01B32/215
摘要： A method of producing a purified graphite from a recycled battery stream for use in as anode material in Li-ion batteries is described. The method comprises a leaching step to obtain a precipitate comprising graphite by filtration, which is then iteratively roasted as a slurry with an aqueous solution of a hydroxide base and subsequently washed to form a purified graphite.
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公开(公告)号：EP4381555A1
公开(公告)日：2024-06-12
申请号：EP22854052.2
申请日：2022-08-02
发明人： GRATZ, Eric , KIM, Kee-Chan
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公开(公告)号：EP4421192A1
公开(公告)日：2024-08-28
申请号：EP23164160.6
申请日：2023-03-24
发明人： LIU, Yadong , DENG, Haixia , GRATZ, Eric , MISTRY, Dhiren , PARMA, Anil
CPC分类号： H01M10/54 , C22B3/06 , H01M2004/02820130101 , H01M4/525 , H01M4/505
摘要： A recycling process for Lithium-ion (Li-ion) batteries includes a selective leach of charge material metals followed by impurity control for effecting microstructures such as a pore volume and surface area for optimal structures and charge performance. Particle characteristics having a favorable effect on performance correlate with soluble impurities in a recycling leach solution formed from spent charge material in a battery recycling stream. Spent batteries yield a black mass of agitated, comingled cathode material, anode material and current collectors. Leaching of the black mass yields a recycling solution of charge material metals and impurities. Selective adjustment of these impurities through adding and/or separating soluble ions in the solution drives formation of internal voids, surface area and pore volume in the resulting cathode material.
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