知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

28 records (took 0.035 seconds)

    ASSYMETRIC POROUS MEMBRANE
    1.
    发明公开
    ASSYMETRIC POROUS MEMBRANE 审中-公开

    公开(公告)号：US20230155253A1

    公开(公告)日：2023-05-18

    申请号：US17918571

    申请日：2021-04-16

    Applicant: Celgard, LLC

    Inventor： Wenbin Yin ,  Daniel R. Alexander ,  Stefan Reinartz ,  Kang Karen Xiao ,  Hisashi Takeda ,  Allen M. Donn

    IPC: H01M50/489 ,  H01M50/457 ,  H01M50/417 ,  H01M50/434

    CPC classification number: H01M50/489 ,  H01M50/417 ,  H01M50/434 ,  H01M50/457

    Abstract: Disclosed herein is an asymmetric porous membrane having two outer layers and at least one inner layers. The outer layers may be asymmetric in thickness, pore size, porosity, tortuosity, or combinations thereof. In some embodiments, the asymmetric porous membrane has two outer layers and no inner layers. The thickness of one of the outer layers to the other of the outer layers is from 1.1 to 25:1, preferably from 1.1:1 to 10:1, 1.1:1 to 5:1 or 4:1 to 10:1. In some embodiments, both outer layers are PP-containing layers and in some embodiments, one outermost layer may be a PE-containing layer and the other may be a PP-containing layer. The asymmetric porous membrane may be used as or to make a battery separator. In some embodiments, the battery separator may include an asymmetric porous membrane having the thinner of the two outer layers or the layer facing the anode coated with a coating such as a ceramic coating. The battery separator may be used in a liquid electrolyte secondary battery. In the battery, the thicker of the outer layers and/or the PP-containing layer faces or is closest to the cathode and the thinner of the two outer layers and/or the PE-containing layer faces or is closest to the anode. The outer layer facing the anode may be coated with a coating such as a ceramic coating. The battery separators described herein may have electrochemical stability voltage equal to or above 4.2 v.s. Li/Li+.

    THIN BATTERY SEPARATORS AND METHODS
    3.
    发明申请
    THIN BATTERY SEPARATORS AND METHODS 审中-公开

    公开(公告)号：US20190334214A1

    公开(公告)日：2019-10-31

    申请号：US16504808

    申请日：2019-07-08

    Applicant: Celgard, LLC

    Inventor： Paul M. Halmo ,  Xiaomin Zhang ,  Paul D. Vido ,  Zhengming Zhang ,  Lie Shi ,  Daniel R. Alexander ,  Jill V. Watson

    IPC: H01M10/42 ,  H01M2/16 ,  H01M10/0525 ,  H01M2/14

    Abstract: In accordance with at least selected aspects, objects or embodiments, optimized, novel or improved membranes, battery separators, batteries, and/or systems and/or related methods of manufacture, use and/or optimization are provided. In accordance with at least selected embodiments, the present invention is related to novel or improved battery separators that prevent dendrite growth, prevent internal shorts due to dendrite growth, or both, batteries incorporating such separators, systems incorporating such batteries, and/or related methods of manufacture, use and/or optimization thereof. In accordance with at least certain embodiments, the present invention is related to novel or improved ultra thin or super thin membranes or battery separators, and/or lithium primary batteries, cells or packs incorporating such separators, and/or systems incorporating such batteries, cells or packs. In accordance with at least particular certain embodiments, the present invention is related to shutdown membranes or battery separators, and/or lithium primary batteries, cells or packs incorporating such separators, and/or systems incorporating such batteries, cells or packs.

    Thin battery separators and methods
    4.
    发明授权
    Thin battery separators and methods 有权

    公开(公告)号：US09666847B2

    公开(公告)日：2017-05-30

    申请号：US14030158

    申请日：2013-09-18

    Applicant: CELGARD, LLC

    Inventor： Paul M. Halmo ,  Xiaomin Zhang ,  Paul D. Vido ,  Zhengming Zhang ,  Lie Shi ,  Daniel R. Alexander ,  Jill V. Watson

    IPC: H01M6/14 ,  H01M2/16 ,  H01M2/14 ,  H01M10/0525

    CPC classification number: H01M10/4235 ,  H01M2/145 ,  H01M2/16 ,  H01M2/1653 ,  H01M2/1686 ,  H01M10/0525

    Abstract: In accordance with at least selected aspects, objects or embodiments, optimized, novel or improved membranes, battery separators, batteries, and/or systems and/or related methods of manufacture, use and/or optimization are provided. In accordance with at least selected embodiments, the present invention is related to novel or improved battery separators that prevent dendrite growth, prevent internal shorts due to dendrite growth, or both, batteries incorporating such separators, systems incorporating such batteries, and/or related methods of manufacture, use and/or optimization thereof. In accordance with at least certain embodiments, the present invention is related to novel or improved ultra thin or super thin membranes or battery separators, and/or lithium primary batteries, cells or packs incorporating such separators, and/or systems incorporating such batteries, cells or packs. In accordance with at least particular certain embodiments, the present invention is related to shutdown membranes or battery separators, and/or lithium primary batteries, cells or packs incorporating such separators, and/or systems incorporating such batteries, cells or packs.

    MEMBRANES, CALENDERED MICROPOROUS MEMBRANES, BATTERY SEPARATORS, AND RELATED METHODS
    5.
    发明申请
    MEMBRANES, CALENDERED MICROPOROUS MEMBRANES, BATTERY SEPARATORS, AND RELATED METHODS 审中-公开

    公开(公告)号：US20170084898A1

    公开(公告)日：2017-03-23

    申请号：US15267566

    申请日：2016-09-16

    Applicant: Celgard, LLC

    Inventor： Kristoffer K. Stokes ,  William John Mason ,  Kang Karen Xiao ,  Xiaomin Zhang ,  Barry J. Summey ,  Robert Moran ,  Jeffrey Gordon Poley ,  Brian R. Stepp ,  Changqing Wang Adams ,  Daniel R. Alexander ,  Shante P. Williams ,  Andrew Edward Voss ,  Douglas George Robertson

    IPC: H01M2/16 ,  H01M10/052 ,  H01M2/14

    Abstract: Novel or improved microporous single or multilayer battery separator membranes, separators, batteries including such membranes or separators, methods of making such membranes, separators, and/or batteries, and/or methods of using such membranes, separators and/or batteries are provided. In accordance with at least certain embodiments, a multilayer dry process polyethylene/polypropylene/polyethylene microporous separator which is manufactured using the inventive process which includes machine direction stretching followed by transverse direction stretching and a subsequent calendering step as a means to reduce the thickness of the multilayer microporous membrane, to reduce the percent porosity of the multilayer microporous membrane in a controlled manner and/or to improve transverse direction tensile strength. In a very particular embodiment, the inventive process produces a thin multilayer microporous membrane that is easily coated with polymeric-ceramic coatings, has excellent mechanical strength properties due to its polypropylene layer or layers and a thermal shutdown function due to its polyethylene layer or layers. The ratio of the thickness of the polypropylene and polyethylene layers in the inventive multilayer microporous membrane can be tailored to balance mechanical strength and thermal shutdown properties.

    Thin battery separators and methods
    9.
    发明授权
    Thin battery separators and methods 有权

    公开(公告)号：US10347951B2

    公开(公告)日：2019-07-09

    申请号：US15492062

    申请日：2017-04-20

    Applicant: Celgard, LLC

    Inventor： Paul M. Halmo ,  Xiaomin Zhang ,  Paul D. Vido ,  Zhengming Zhang ,  Lie Shi ,  Daniel R. Alexander ,  Jill V. Watson

    IPC: H01M2/14 ,  H01M10/42 ,  H01M2/16 ,  H01M10/0525

    Abstract: In accordance with at least selected aspects, objects or embodiments, optimized, novel or improved membranes, battery separators, batteries, and/or systems and/or related methods of manufacture, use and/or optimization are provided. In accordance with at least selected embodiments, the present invention is related to novel or improved battery separators that prevent dendrite growth, prevent internal shorts due to dendrite growth, or both, batteries incorporating such separators, systems incorporating such batteries, and/or related methods of manufacture, use and/or optimization thereof. In accordance with at least certain embodiments, the present invention is related to novel or improved ultra thin or super thin membranes or battery separators, and/or lithium primary batteries, cells or packs incorporating such separators, and/or systems incorporating such batteries, cells or packs. In accordance with at least particular certain embodiments, the present invention is related to shutdown membranes or battery separators, and/or lithium primary batteries, cells or packs incorporating such separators, and/or systems incorporating such batteries, cells or packs.

    THIN BATTERY SEPARATORS AND METHODS
    10.
    发明申请
    THIN BATTERY SEPARATORS AND METHODS 审中-公开

    公开(公告)号：US20170222281A1

    公开(公告)日：2017-08-03

    申请号：US15492062

    申请日：2017-04-20

    Applicant: Celgard, LLC

    Inventor： Paul M. Halmo ,  Xiaomin Zhang ,  Paul D. Vido ,  Zhengming Zhang ,  Lie Shi ,  Daniel R. Alexander ,  Jill V. Watson

    IPC: H01M10/42 ,  H01M2/16 ,  H01M10/0525

    CPC classification number: H01M10/4235 ,  H01M2/145 ,  H01M2/16 ,  H01M2/1653 ,  H01M2/1686 ,  H01M10/0525

    Abstract: In accordance with at least selected aspects, objects or embodiments, optimized, novel or improved membranes, battery separators, batteries, and/or systems and/or related methods of manufacture, use and/or optimization are provided. In accordance with at least selected embodiments, the present invention is related to novel or improved battery separators that prevent dendrite growth, prevent internal shorts due to dendrite growth, or both, batteries incorporating such separators, systems incorporating such batteries, and/or related methods of manufacture, use and/or optimization thereof. In accordance with at least certain embodiments, the present invention is related to novel or improved ultra thin or super thin membranes or battery separators, and/or lithium primary batteries, cells or packs incorporating such separators, and/or systems incorporating such batteries, cells or packs. In accordance with at least particular certain embodiments, the present invention is related to shutdown membranes or battery separators, and/or lithium primary batteries, cells or packs incorporating such separators, and/or systems incorporating such batteries, cells or packs.

Patent Agency Ranking