公开(公告)号：US11374218B2

公开(公告)日：2022-06-28

申请号：US16547084

申请日：2019-08-21

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Meng Jiang ,  Lei Wang ,  Raghunathan K

IPC分类号： H01M4/38 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/02

摘要： A negative electroactive material for use in a negative electrode of an electrochemical cell that cycles lithium ions is provided. The negative electroactive material includes a particle defining a core region that includes silicon, silicon-containing alloys, tin-containing alloys, and combinations thereof. A porous, elastomeric multilayer coating is disposed on a surface of the core region that includes a first carbonaceous layer and a second porous elastomeric layer. The second porous elastomeric layer includes siloxane and a plurality of electrically conductive particles. The multilayer coating is capable of reversibly elongating from a contracted state to an expanded state in at least one direction to minimize or prevent fracturing of the plurality of negative electroactive material particles during lithium ion cycling.

公开(公告)号：US20210083264A1

公开(公告)日：2021-03-18

申请号：US16572789

申请日：2019-09-17

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Meng Jiang ,  Raghunathan K ,  Ion C. Halalay ,  Mark W. Verbrugge

IPC分类号： H01M4/134 ,  H01M4/04 ,  H01M4/62 ,  H01M4/38

摘要： Methods for fabricating electrodes include coating a current collector with a slurry to form a coated current collector. The slurry includes a dry fraction, including silicon particles, polymeric binders, and one or more types of naturally occurring carbonaceous filaments, and one or more solvents. The coated current collector is heat treated to produce the electrode having a layer of silicon-based host material. The one or more naturally occurring carbonaceous filaments can include animal fibers, chitin, alginate, cellulose, keratin, and chitosan, and can have an average length of 1 μm to 50 μm and an average diameter of 1 nm to 500 nm. The dry fraction can include 5 wt. % to 95 wt. % silicon particles, 0.1 wt. % to 15 wt. % polymeric binders, and 1 wt. % to 20 wt. % naturally occurring carbonaceous filaments. The method can include assembling a battery cell by disposing the electrode and a positive electrode in electrolyte.

公开(公告)号：US10122002B2

公开(公告)日：2018-11-06

申请号：US14601355

申请日：2015-01-21

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Jung Hyun Kim ,  Bob R. Powell, Jr. ,  Meng Jiang ,  Peng Lu ,  Xingcheng Xiao ,  Nicholas P. W. Pieczonka

IPC分类号： H01M2/16 ,  H01M10/0525 ,  H01M4/13 ,  H01M10/0562 ,  H01M10/0565 ,  H01M10/056 ,  H01M10/0585 ,  H01M4/525 ,  H01M4/505 ,  H01M4/02 ,  H01M4/587

摘要： A lithium-ion conducting, solid electrolyte is deposited on a thin, flexible, porous alumina membrane which is placed between co-extensive facing side surfaces of a porous, lithium-accepting, negative electrode and a positive electrode formed of a porous layer of particles of a compound of lithium, a transition metal element, and optionally, another metal element. A liquid electrolyte formed, for example, of LiPF6 dissolved in an organic solvent, infiltrates the electrode materials of the two porous electrodes for transport of lithium ions during cell operation. But the solid electrolyte permits the passage of only lithium ions, and the negative electrode is protected from damage by transition metal ions or other chemical species produced in the positive electrode of the lithium-ion cell.

公开(公告)号：US20180205114A1

公开(公告)日：2018-07-19

申请号：US15406423

申请日：2017-01-13

申请人： GM Global Technology Operations LLC ,  McMaster University

发明人： Allen D. Pauric ,  Meng Jiang ,  Gillian R. Goward ,  Raghunathan K

IPC分类号： H01M10/0525 ,  H01M4/134 ,  H01M4/131 ,  H01M4/38 ,  H01M4/52 ,  H01M4/48 ,  H01M4/62 ,  H01M4/80 ,  H01M4/66 ,  H01M4/04

CPC分类号： H01M10/0525 ,  H01M4/0404 ,  H01M4/131 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/386 ,  H01M4/387 ,  H01M4/485 ,  H01M4/622 ,  H01M4/624 ,  H01M4/625 ,  H01M4/626 ,  H01M4/66 ,  H01M4/667 ,  H01M4/80 ,  H01M2004/027

摘要： An electrode material for an electrochemical cell is provided. The electrode includes a porous hydrophilic substrate, an electroactive material, and a binder. The porous hydrophilic substrate includes a plurality of voids and may be formed from cellulose or cellulosic derivative material. The electroactive material is dispersed in at least a portion of the voids of the hydrophilic substrate. In other aspects, another electrode material for an electrochemical cell is provided. The electrode includes a porous hydrophilic substrate, an electroactive material, an electrically conductive particle, and a binder. The porous hydrophilic substrate includes a plurality of voids and may be formed from cellulose or cellulosic derivative material. The electroactive material and the electrically conductive particle are dispersed in at least a portion of the voids of the hydrophilic substrate. In still other aspects, the porous hydrophilic substrate comprises a coating that is electrically conductive.

公开(公告)号：US20160211498A1

公开(公告)日：2016-07-21

申请号：US14601355

申请日：2015-01-21

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Jung Hyun Kim ,  Bob R. Powell, JR. ,  Meng Jiang ,  Peng Lu ,  Xingcheng Xiao ,  Nicholas P. W. Pieczonka

IPC分类号： H01M2/16 ,  H01M4/13 ,  H01M4/505 ,  H01M10/0562 ,  H01M10/0565 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0585

CPC分类号： H01M2/1686 ,  H01M2/1646 ,  H01M4/13 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/056 ,  H01M10/0562 ,  H01M10/0565 ,  H01M10/0585 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2300/0068 ,  H01M2300/0071 ,  H01M2300/0082

摘要： A lithium-ion conducting, solid electrolyte is deposited on a thin, flexible, porous alumina membrane which is placed between co-extensive facing side surfaces of a porous, lithium-accepting, negative electrode and a positive electrode formed of a porous layer of particles of a compound of lithium, a transition metal element, and optionally, another metal element. A liquid electrolyte formed, for example, of LiPF6 dissolved in an organic solvent, infiltrates the electrode materials of the two porous electrodes for transport of lithium ions during cell operation. But the solid electrolyte permits the passage of only lithium ions, and the negative electrode is protected from damage by transition metal ions or other chemical species produced in the positive electrode of the lithium-ion cell.

摘要翻译： 将锂离子传导固体电解质沉积在薄的柔性多孔氧化铝膜上，该氧化铝膜放置在由多孔，锂接受，负极和由多孔颗粒层形成的正电极的共面向侧面之间 的锂化合物，过渡金属元素和任选的另一种金属元素。 例如由溶解在有机溶剂中的LiPF 6形成的液体电解质在电池操作期间渗入两个多孔电极的电极材料以输送锂离子。 但是固体电解质仅允许锂离子通过，并且保护负极免受过渡金属离子或在锂离子电池的正极中产生的其它化学物质的损害。

公开(公告)号：US20240304880A1

公开(公告)日：2024-09-12

申请号：US18179414

申请日：2023-03-07

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Meng Jiang ,  Louis G. Hector, JR. ,  Erik B. Golm

IPC分类号： H01M10/52 ,  H01M50/103 ,  H01M50/105 ,  H01M50/107 ,  H01M50/109 ,  H01M50/30 ,  H01M50/474 ,  H01M50/477 ,  H01M50/483 ,  H01M50/486

CPC分类号： H01M10/52 ,  H01M50/103 ,  H01M50/105 ,  H01M50/107 ,  H01M50/109 ,  H01M50/394 ,  H01M50/474 ,  H01M50/477 ,  H01M50/483 ,  H01M50/486 ,  H01M2220/20

摘要： A battery cell includes an electrode stack including a pair of an anode and a cathode and a separator. Operation of the battery cell causes gas or moisture to form. The battery cell further includes a stiff frame. The frame includes a hollow portion. The electrode stack is disposed within the hollow portion. The frame includes a portion of the frame that is porous or includes a gas diffusion membrane. The battery cell further includes an electrolyte disposed within the frame and in contact with the electrode stack and a functional material disposed within the battery cell and outside of the hollow portion. The functional material absorbs the gas/moisture. The portion of the frame that is porous or includes a gas diffusion membrane enables the gas/moisture to exit the hollow portion and come into contact with the functional material while maintaining the electrolyte within the frame.

公开(公告)号：US20240304878A1

公开(公告)日：2024-09-12

申请号：US18179722

申请日：2023-03-07

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Charles W. Wampler ,  Meinan He ,  Meng Jiang ,  Yongjie Zhu ,  Chunhao J. Lee

IPC分类号： H01M10/48 ,  G01R31/3842 ,  G01R31/389 ,  G01R31/392

CPC分类号： H01M10/482 ,  G01R31/3842 ,  G01R31/389 ,  G01R31/392 ,  H01M10/488 ,  H01M10/052

摘要： Catastrophic capacity failure in Lithium Metal Battery (LMB) cells is preceded by an increase in battery resistance. At a fixed temperature, the onset of failure occurs at the same value of resistance across the cell(s). Various embodiments use this phenomenon as a prognostic for predicting when such a failure is likely to occur. In various aspects, a normalized resistance in a vehicle or other device may be detected and compensated for temperature differences. The compensated resistances, a threshold state of charge (SOC), and capacity differences may be used to predict capacity failure in remaining capacity or distance (e.g., miles), to identify failing LMB cells, and to send a prognostic alert.

公开(公告)号：US11316142B2

公开(公告)日：2022-04-26

申请号：US16572789

申请日：2019-09-17

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Meng Jiang ,  Raghunathan K ,  Ion C. Halalay ,  Mark W. Verbrugge

IPC分类号： H01M4/134 ,  H01M4/04 ,  H01M4/62 ,  H01M4/38

摘要： Methods for fabricating electrodes include coating a current collector with a slurry to form a coated current collector. The slurry includes a dry fraction, including silicon particles, polymeric binders, and one or more types of naturally occurring carbonaceous filaments, and one or more solvents. The coated current collector is heat treated to produce the electrode having a layer of silicon-based host material. The one or more naturally occurring carbonaceous filaments can include animal fibers, chitin, alginate, cellulose, keratin, and chitosan, and can have an average length of 1 μm to 50 μm and an average diameter of 1 nm to 500 nm. The dry fraction can include 5 wt. % to 95 wt. % silicon particles, 0.1 wt. % to 15 wt. % polymeric binders, and 1 wt. % to 20 wt. % naturally occurring carbonaceous filaments. The method can include assembling a battery cell by disposing the electrode and a positive electrode in electrolyte.

公开(公告)号：US09859554B2

公开(公告)日：2018-01-02

申请号：US14323727

申请日：2014-07-03

申请人： GM Global Technology Operations LLC

发明人： Qiangfeng Xiao ,  Mei Cai ,  Li Yang ,  Fang Dai ,  Meng Jiang

IPC分类号： H01M4/04 ,  H01M4/36 ,  H01M4/62 ,  H01M4/1395 ,  H01M4/134 ,  H01M10/052 ,  H01M4/38 ,  H01M4/02

CPC分类号： H01M4/366 ,  H01M4/0402 ,  H01M4/0471 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/386 ,  H01M4/622 ,  H01M4/625 ,  H01M4/628 ,  H01M10/052 ,  H01M2004/021 ,  Y02T10/7011

摘要： A negative electrode material includes an active material. The active material includes a silicon core selected from the group consisting of Si, SiO2, SiOx (0

公开(公告)号：US20170162859A1

公开(公告)日：2017-06-08

申请号：US15115870

申请日：2015-02-09

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Li Yang ,  Qiangfeng Xiao ,  Mei Cai ,  Meng Jiang ,  Xingcheng Xiao

IPC分类号： H01M4/04 ,  H01M10/0568 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/38

CPC分类号： H01M4/0445 ,  H01M4/0461 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/386 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/0025 ,  H01M2300/0034

摘要： In an example of a method for enhancing the performance of a silicon-based negative electrode, the silicon-based negative electrode is pre-lithiated in an electrolyte including a lithium salt dissolved in a solvent mixture of dimethoxyethane (DME) and fluoroethylene carbonate (FEC). The DME and FEC are present in a volume to volume ratio ranging from 10 to 1 to 1 to 10. The pre-lithiation forms a stable solid electrolyte interface layer on an exposed surface of the negative electrode.