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    CARBON FIBER PRE-PREGS AND METHODS FOR MANUFACTURING THEREOF
    2.
    发明申请
    CARBON FIBER PRE-PREGS AND METHODS FOR MANUFACTURING THEREOF 审中-公开

    公开(公告)号：US20180016740A1

    公开(公告)日：2018-01-18

    申请号：US15211814

    申请日：2016-07-15

    Applicant: GM Global Technology Operations LLC

    Inventor： Hamid G. Kia ,  Nicole D. Ellison ,  Selina X. Zhao

    IPC: D06M15/55 ,  B26D1/22 ,  D06H7/02 ,  D06M101/40

    CPC classification number: D06M15/55 ,  B26D1/225 ,  B32B3/266 ,  C08J5/042 ,  C08J5/24 ,  D06H7/02 ,  D06M2101/40 ,  D10B2101/12 ,  D10B2505/02 ,  Y10T428/24314

    Abstract: Methods and components produced from carbon fiber pre-impregnated composite precursor materials (pre-preg) having enhanced flowability and moldability are provided. Discontinuous cut regions are introduced into a pre-preg. A sheet of pre-preg may be contacted with a patterned surface having a plurality of non-contiguous staggered cutters, so that the contacting creates discontinuous cuts in the pre-preg. A plurality of staggered discontinuous cut regions are formed in the plurality of continuous carbon fibers that define a first plurality of carbon fibers having a first length and a second plurality of carbon fibers having a second distinct length. The patterned surface may be provided on a cutter device that is a roller or a plate having the non-contiguous staggered cutters formed or disposed thereon. The discontinuous cut regions that are formed in the pre-preg reduce stiffness and improve moldability/flowability when forming carbon fiber polymeric composites, while retaining high strength levels.

    Carbon fiber pre-pregs and methods for manufacturing thereof
    5.
    发明授权
    Carbon fiber pre-pregs and methods for manufacturing thereof 有权

    公开(公告)号：US10358767B2

    公开(公告)日：2019-07-23

    申请号：US15211814

    申请日：2016-07-15

    Applicant: GM Global Technology Operations LLC

    Inventor： Hamid G. Kia ,  Nicole D. Ellison ,  Selina X. Zhao

    IPC: B32B3/24 ,  D06M15/55 ,  B26D1/22 ,  D06H7/02 ,  B32B3/26 ,  D06M101/40

    Abstract: Methods and components produced from carbon fiber pre-impregnated composite precursor materials (pre-preg) having enhanced flowability and moldability are provided. Discontinuous cut regions are introduced into a pre-preg. A sheet of pre-preg may be contacted with a patterned surface having a plurality of non-contiguous staggered cutters, so that the contacting creates discontinuous cuts in the pre-preg. A plurality of staggered discontinuous cut regions are formed in the plurality of continuous carbon fibers that define a first plurality of carbon fibers having a first length and a second plurality of carbon fibers having a second distinct length. The patterned surface may be provided on a cutter device that is a roller or a plate having the non-contiguous staggered cutters formed or disposed thereon. The discontinuous cut regions that are formed in the pre-preg reduce stiffness and improve moldability/flowability when forming carbon fiber polymeric composites, while retaining high strength levels.

    PROCESS FOR LITHIATING NEGATIVE ELECTRODES FOR LITHIUM ION ELECTROCHEMICAL CELLS
    7.
    发明申请
    PROCESS FOR LITHIATING NEGATIVE ELECTRODES FOR LITHIUM ION ELECTROCHEMICAL CELLS 有权
    用于锂离子电化学电池的负极电极的方法

    公开(公告)号：US20160181594A1

    公开(公告)日：2016-06-23

    申请号：US14935661

    申请日：2015-11-09

    Applicant: GM Global Technology Operations, LLC

    Inventor： Michael P. Balogh ,  Nicholas P. Irish ,  Nicole D. Ellison

    IPC: H01M4/1393 ,  H01M4/04 ,  H01M4/133

    CPC classification number: H01M4/1393 ,  H01M4/043 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/139 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/386 ,  H01M4/387 ,  H01M4/485 ,  H01M10/052 ,  H01M10/4235

    Abstract: Methods for pre-lithiating negative electrodes for lithium-ion electrochemical cells (e.g., batteries) are provided. The methods include disposing a lithium metal source comprising a layer of lithium metal adjacent to a surface of a pre-fabricated negative electrode. The lithium metal source and electrode are heated (e.g., to a temperature of ≧about 100° C.) to transfer a quantity of lithium to the pre-fabricated negative electrode. This lithiation process adds excess active lithium capacity that enables replacement of irreversibly lost lithium during cell formation and cell aging, thus leading to increased battery capacity and improved battery life. The methods may be batch or continuous.

    Abstract translation: 提供了用于锂离子电化学电池（例如电池）的预锂化负极的方法。 所述方法包括将包含锂金属层的锂金属源设置在预制负极的表面附近。 将锂金属源和电极加热（例如，达到约100℃的温度）以将一定量的锂转移到预制的负极。 这种锂化过程增加了过量的活性锂容量，可以在细胞形成和细胞老化期间替换不可逆的丢失的锂，从而导致电池容量增加并延长电池寿命。 方法可以是批次还是连续。

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