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.

公开(公告)号：US20200259164A1

公开(公告)日：2020-08-13

申请号：US16858487

申请日：2020-04-24

申请人： A123 Systems, LLC

发明人： Jun Wang ,  Paul Gionet ,  Hungoo Cho ,  Leslie J. Pinnell ,  Robert W. Grant

IPC分类号： H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M4/62 ,  H01M4/66 ,  H01M10/052 ,  H01M4/04 ,  H01M4/133 ,  H01M10/0525

摘要： A pre-lithiated silicon anode comprising a PVDF binder at 5-12 wt. % for use in a Li-ion cell is provided. In particular instances, a conductive additive may be added at less than 5 wt. %. The Si anode with PVDF binder is pre-lithiated prior to cell assembly and following Si anode fabrication. The combination of pre-lithiation and PVDF in the Si anode for use in a rechargeable Li-ion cell shows the unexpected result of extending the cycle life.

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.

公开(公告)号：US10862158B2

公开(公告)日：2020-12-08

申请号：US15761000

申请日：2016-09-29

申请人： A123 Systems LLC

发明人： Jun Wang ,  Ronnie Wilkins ,  Paul Gionet

IPC分类号： H01M10/0525 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/66 ,  H01M4/62 ,  H01M4/36 ,  H01M4/587

摘要： A silicon anode comprising a hybrid binder at a blending ratio of 10-90 wt. % for use in a Li-ion battery is provided. The combination of a hybrid binder in the Si anode for use in a rechargeable Li-ion cell shows the unexpected result of extending the cycle life and a balancing effect between adhesion strength and first cycle efficiency.

公开(公告)号：US20200328408A1

公开(公告)日：2020-10-15

申请号：US16644950

申请日：2018-05-18

申请人： A123 Systems LLC

发明人： Kevin Scanlan ,  Derrick Spencer Maxwell ,  Derek Johnson ,  Jun Wang ,  Rocco Iocco ,  Weidong Zhou

IPC分类号： H01M4/36 ,  H01M4/38 ,  H01M4/133 ,  H01M4/134 ,  H01M4/587 ,  H01M4/62 ,  H01M4/90 ,  H01M10/0525

摘要： Materials and methods for coating an electrochemically active electrode material for use in a lithium-ion battery are provided. In one example, an electrochemically active electrode material comprises: a polymer coating applied directly to an exterior surface of the electrochemically active electrode material; a metal plating catalyst adhered to the continuous polymer; and a continuous metal coating that completely covers the metal catalyst and continuous polymer coating. The electrochemically active electrode material may comprise a powder comprising one or more secondary particles, and the polymer and metal coatings may be applied to exterior surfaces of these secondary particles.

公开(公告)号：US11769882B2

公开(公告)日：2023-09-26

申请号：US17354959

申请日：2021-06-22

申请人： A123 Systems, LLC

发明人： Tae Kyoung Kim ,  Jun Wang ,  Ronnie Wilkins ,  Jordan Rubio ,  Ankita Faulkner ,  Zaiyuan Le ,  Xiqing Wang ,  Ting Huang

IPC分类号： H01M4/00 ,  H01M4/66 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62

CPC分类号： H01M4/663 ,  H01M4/0404 ,  H01M4/505 ,  H01M4/525 ,  H01M4/623 ,  H01M10/0525

摘要： Systems and methods are provided for an electrode for a lithium-ion battery cell. In one example, the electrode may include a current collector having two opposing sides, at least one of the two opposing sides being configured with a first coating layer disposed on the current collector at a first loading, where the first coating layer may include a first binder in a first weight ratio, and a second coating layer disposed on the first coating layer at a second loading, where the second coating layer may include a second binder in a second weight ratio, wherein the first weight ratio may be greater than the second weight ratio, and a ratio of the first loading to the second loading may be less than 1:2. In this way, direct current internal resistance of the lithium-ion battery cell may be decreased while maintaining or increasing adhesion within the electrode.

公开(公告)号：US11682758B2

公开(公告)日：2023-06-20

申请号：US16644950

申请日：2018-05-18

申请人： A123 Systems LLC

发明人： Kevin Scanlan ,  Derrick Spencer Maxwell ,  Derek Johnson ,  Jun Wang ,  Rocco Iocco ,  Weidong Zhou

IPC分类号： H01M4/00 ,  H01M4/36 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/587 ,  H01M4/62 ,  H01M4/90 ,  H01M10/0525 ,  H01M4/02

CPC分类号： H01M4/366 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/587 ,  H01M4/622 ,  H01M4/9083 ,  H01M10/0525 ,  H01M2004/027

摘要： Materials and methods for coating an electrochemically active electrode material for use in a lithium-ion battery are provided. In one example, an electrochemically active electrode material comprises: a polymer coating applied directly to an exterior surface of the electrochemically active electrode material; a metal plating catalyst adhered to the continuous polymer; and a continuous metal coating that completely covers the metal catalyst and continuous polymer coating. The electrochemically active electrode material may comprise a powder comprising one or more secondary particles, and the polymer and metal coatings may be applied to exterior surfaces of these secondary particles.

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

IPC分类号： H01M4/525 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/58 ,  H01M4/04

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.

公开(公告)号：US20180261881A1

公开(公告)日：2018-09-13

申请号：US15761000

申请日：2016-09-29

申请人： A123 Systems LLC

发明人： Jun Wang ,  Ronnie Wilkins ,  Paul Gionet

IPC分类号： H01M10/0525 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/62 ,  H01M4/36 ,  H01M4/66 ,  H01M4/587

CPC分类号： H01M10/0525 ,  H01M4/043 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/364 ,  H01M4/386 ,  H01M4/587 ,  H01M4/621 ,  H01M4/622 ,  H01M4/623 ,  H01M4/661

摘要： A silicon anode comprising a hybrid binder at a blending ratio of 10-90 wt. % for use in a Li-ion battery is provided. The combination of a hybrid binder in the Si anode for use in a rechargeable Li-ion cell shows the unexpected result of extending the cycle life and a balancing effect between adhesion strength and first cycle efficiency.

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.