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公开(公告)号：US20230238508A1
公开(公告)日：2023-07-27
申请号：US18153985
申请日：2023-01-12
申请人： A123 Systems LLC
发明人： Linghong Zhang , Xiangyang Zhu , Taehwan Yu , Fanqun Li , Yang Chen , Xiaochong Zhou
IPC分类号： H01M4/04 , H01M10/0525 , H01M10/0567 , H01M4/62
CPC分类号： H01M4/0492 , H01M10/0525 , H01M10/0567 , H01M4/624
摘要： Systems and methods for a lithium-ion battery cell are disclosed. In one example, a method for forming a cathode for a lithium-ion battery cell includes forming a pre-lithiated cathode with a pre-lithiation reagent and positioning the pre-lithiated cathode in contact with an electrolyte. An electrolyte additive is injected into the electrolyte to form a passivation layer at the pre-lithiated cathode, the passivation layer inhibiting continued decomposition of the pre-lithiation reagent of the pre-lithiated cathode after completion of a formation cycle of the lithium-ion battery cell.
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公开(公告)号：US20220359862A1
公开(公告)日：2022-11-10
申请号：US17659463
申请日：2022-04-15
申请人： A123 Systems LLC
发明人： Linghong Zhang , Xiaorui Chen , Shaocheng Hu , Xiqing Wang , Jun Wang , Taehwan Yu , Paul Gionet
IPC分类号： H01M4/36 , H01M10/0525 , H01M10/04 , H01M4/04 , H01M4/62
摘要： Methods and systems are provided for forming a cathode pre-lithiation layer for a lithium-ion battery. In one example, a slurry for forming the cathode pre-lithiation layer may include a solvent including a uniform dispersion of a nanoscale cathode pre-lithiation reagent. The slurry may be cast onto a porous cathode active material layer and dried and calendered to form the cathode pre-lithiation layer. In some examples, the slurry may have a viscosity of up to 5000 cP at a shear rate of 100 s−1. In this way, delamination and interfacial impedance between the cathode pre-lithiation layer and the porous cathode active material layer may be reduced relative to a higher viscosity cathode pre-lithiation layer having a larger scale cathode pre-lithiation reagent cast onto a non-porous or low-porosity cathode active material layer.
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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：US20220020977A1
公开(公告)日：2022-01-20
申请号：US17414304
申请日：2019-12-20
申请人： A123 Systems LLC
发明人： Derrick Maxwell , Xiangyang Zhu , Jun Wang , Taehwan Yu , Weidong Zhou , Sookyung Jeong , Derek C. Johnson , Linghong Zhang , Kerui Sun , Nathan Reinsma , Xiaorui Chen
IPC分类号： H01M4/1391 , H01M10/0525 , H01M4/525 , C01G53/00
摘要： Methods and systems are provided for a cathode material for lithium ion batteries. In one example, the cathode material may include a lithium mixed metal oxide core and a surface coating surrounding the core. Optionally, a passivating layer may continuously surround the surface coating. In some examples, the surface coating or surface layer may include a sacrificial lithium source, a lithium-based active cathode catalyst, or a combination thereof. In other examples, methods are provided for manufacturing the cathode material for use in a lithium ion battery.
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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：US20220200053A1
公开(公告)日：2022-06-23
申请号：US17133404
申请日：2020-12-23
申请人： A123 Systems, LLC
发明人： Liyuan Sun , Xiaobo Li , Mengqing Xu , Derek Johnson , Taehwan Yu , Kate Digan , Connor Tomshack
IPC分类号： H01M10/0569 , H01M10/0568 , H01M10/0525 , H01M10/0567
摘要： Systems and methods are provided for using electrolytic compositions in lithium ion batteries. In one example, an electrolytic composition may include vinylene carbonate, fluoroethylene carbonate, 1,3-propane sultone, ethylene sulfite, and a conducting salt including no less than 80 mol % of lithium bis(fluorosulfonyl)imide. In this way, a capacity retention of the lithium ion battery may be maintained, such as during high-temperature storage at 100% state of charge.
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公开(公告)号：US20210202940A1
公开(公告)日：2021-07-01
申请号：US17049014
申请日：2019-04-18
申请人： A123 Systems LLC.
发明人： Jianyang Li , Chuanjing Xu , Maha Rachid Hammoud , Taehwan Yu , Jun Wang , Derek C. Johnson , Fu Zhou
摘要： A coated cathode material for lithium-ion batteries is disclosed. Methods and systems are further provided for applying a coating to an active cathode material for use in a lithium-ion battery. In one example, the coated cathode material may include a high-nickel content active cathode material, such as lithium nickel manganese cobalt oxide or lithium nickel aluminum cobalt oxide, coated with a coating including one or more high energy density active materials, such as lithium vanadium fluorophosphate and/or a lithium iron manganese phosphate compound. In some examples, the high-nickel content active cathode material may include greater than or equal to 60% nickel content.
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公开(公告)号：US20220246940A1
公开(公告)日：2022-08-04
申请号：US17648797
申请日：2022-01-24
申请人： A123 Systems LLC.
发明人： Linghong Zhang , Derrick Maxwell , Shaocheng HU , Claire Whitaker , Wilber Zuo , Jun Wang , Taehwan Yu
IPC分类号： H01M4/62 , H01M4/36 , H01M10/0525 , H01M4/58
摘要： Systems and methods are provided for passivating lithium nitride (Li3N) for use in a lithium-ion battery as a cathode pre-lithiation reagent. In one example, the cathode pre-lithiation reagent may include a core particle composed of Li3N, and a passivation coating uniformly disposed on at least a portion of a surface of the core particle. In some examples, the passivation coating may cover a majority of the surface of the core particle or may substantially completely cover the surface of the core particle. The cathode pre-lithiation reagent may further be included in the lithium-ion battery, where the passivation coating may mitigate unwanted side reactions during processing and manufacturing. In this way, Li3N may be successfully and reproducibly utilized as a cathode pre-lithiation reagent, such that initial lithium ion consumption may be compensated and capacity of the lithium-ion battery may be concomitantly increased.
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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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