公开(公告)号：US20240313283A1

公开(公告)日：2024-09-19

申请号：US18120786

申请日：2023-03-13

申请人： Ascend Elements, Inc.

发明人： Yadong Liu ,  Haixia Deng ,  Eric Gratz ,  Dhiren Mistry ,  Anil Parmar

IPC分类号： H01M10/54 ,  C01G53/00

CPC分类号： H01M10/54 ,  C01G53/50 ,  C01P2002/54 ,  C01P2004/03 ,  C01P2006/42

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.

公开(公告)号：US20240313212A1

公开(公告)日：2024-09-19

申请号：US18120776

申请日：2023-03-13

申请人： Ascend Elements, Inc.

发明人： Yadong Liu ,  Haixia Deng ,  Eric Gratz ,  Dhiren Mistry ,  Anil Parmar

IPC分类号： H01M4/525 ,  H01M10/0525 ,  H01M10/54

CPC分类号： H01M4/525 ,  H01M10/0525 ,  H01M10/54 ,  H01M2004/021

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.

公开(公告)号：US20240287645A1

公开(公告)日：2024-08-29

申请号：US18113312

申请日：2023-02-23

申请人： Ascend Elements, Inc.

发明人： Yadong Liu ,  Haixia Deng ,  Eric Gratz ,  Dhiren Mistry ,  Anil Parmar

IPC分类号： C22B7/00 ,  C22B3/22 ,  C22B3/42 ,  H01M10/54

CPC分类号： C22B7/007 ,  C22B3/22 ,  C22B3/42 ,  H01M10/54

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.