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公开(公告)号：US20240282936A1
公开(公告)日：2024-08-22
申请号：US18645218
申请日：2024-04-24
申请人： A123 Systems LLC
发明人： Lei Liu , Kitae Kim , Lixin Wang , Anil Parmar , Bryan Kim , Chloe Harrison , Andrew Millonig , Derek Johnson , Eunsung Lee , Taehwan Yu
CPC分类号： H01M4/366 , C01G53/50 , H01M4/049 , H01M4/505 , H01M4/525 , C01P2002/52 , C01P2004/80 , C01P2006/40 , H01M2004/028
摘要： Methods and systems are provided for salt-rinse surface doping of electrode materials for lithium-ion batteries. In one example, a method may include dissolving a dopant salt in a solvent to form a dopant salt rinse solution, rinsing an electrode active material with the dopant salt rinse solution to form a coated electrode active material, and heating the coated electrode active material to form a doped electrode active material. In some examples, a surface region of the doped electrode active material may include a uniform distribution of dopants from the dopant salt rinse solution. In this way, the electrode active material may be rinsed and doped via the dopant salt rinse solution in a single-stage process.
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公开(公告)号：US20210202948A1
公开(公告)日：2021-07-01
申请号：US17269949
申请日：2019-08-28
申请人： A123 Systems, LLC
发明人： Lixin Wang , Chloe Harrison , Derek C. Johnson
IPC分类号： H01M4/62 , H01M4/04 , H01M10/0525
摘要： A binder for an electrode is provided herein. In one example, the electrode may include a current collector, and an electrode coating layer, the electrode coating layer including an electrode active material and a binder, where the binder may comprise an aromatic polyamide-based compound, and the binder may be present at greater than 0 wt % and less than or equal to 30 wt % of the electrode coating layer. In one example, the binder provides stronger cohesion between particles of the electrode active material. Methods and systems are further provided for fabricating the electrode including the binder.
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公开(公告)号：US12009507B2
公开(公告)日：2024-06-11
申请号：US17443805
申请日：2021-07-27
申请人： A123 Systems LLC
发明人： Lei Liu , Kitae Kim , Lixin Wang , Anil Parmar , Bryan Kim , Chloe Harrison , Andrew Millonig , Derek Johnson , Eunsung Lee , Taehwan Yu
CPC分类号： H01M4/366 , C01G53/50 , H01M4/049 , H01M4/505 , H01M4/525 , C01P2002/52 , C01P2004/80 , C01P2006/40 , H01M2004/028
摘要： Methods and systems are provided for salt-rinse surface doping of electrode materials for lithium-ion batteries. In one example, a method may include dissolving a dopant salt in a solvent to form a dopant salt rinse solution, rinsing an electrode active material with the dopant salt rinse solution to form a coated electrode active material, and heating the coated electrode active material to form a doped electrode active material. In some examples, a surface region of the doped electrode active material may include a uniform distribution of dopants from the dopant salt rinse solution. In this way, the electrode active material may be rinsed and doped via the dopant salt rinse solution in a single-stage process.
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公开(公告)号：US20220037651A1
公开(公告)日：2022-02-03
申请号：US17443805
申请日：2021-07-27
申请人： A123 Systems LLC
发明人： Lei Liu , Kitae Kim , Lixin Wang , Anil Parmar , Bryan Kim , Chloe Harrison , Andrew Millonig , Derek Johnson , Eunsung Lee , Taehwan Yu
摘要： Methods and systems are provided for salt-rinse surface doping of electrode materials for lithium-ion batteries. In one example, a method may include dissolving a dopant salt in a solvent to form a dopant salt rinse solution, rinsing an electrode active material with the dopant salt rinse solution to form a coated electrode active material, and heating the coated electrode active material to form a doped electrode active material. In some examples, a surface region of the doped electrode active material may include a uniform distribution of dopants from the dopant salt rinse solution. In this way, the electrode active material may be rinsed and doped via the dopant salt rinse solution in a single-stage process.
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公开(公告)号：US20210391578A1
公开(公告)日：2021-12-16
申请号：US17286430
申请日：2019-10-11
申请人： A123 Systems LLC
发明人： Lixin Wang , Weidong Zhou , Yao Chen , Chloe Harrison , Fu Zhou , Kitae Kim , Jun Wang , Derek C. Johnson
IPC分类号： H01M4/62 , H01M10/0525 , C01F7/02 , C01G53/00
摘要： Methods and systems are provided for an electrode active material for lithium ion batteries. In one example, the electrode active material may include a lithium mixed metal oxide core and flame-retardant dusting particles partially retained within a surface of the core. In some examples, the dusting particles may have an average size of less than 20 μm. In some examples, the amount of dusting particles by weight may be greater than 0.1% of the core particles and less than 50% of the core particles. In another example, methods are provided for manufacturing the electrode active material for use in a lithium ion battery, where lithium metal composite core particles may be mixed with the flame-retardant dusting particles in a dry process.
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