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    Coatings, coated separators, batteries, and related methods
    6.
    发明授权
    Coatings, coated separators, batteries, and related methods 有权

    公开(公告)号：US11437684B2

    公开(公告)日：2022-09-06

    申请号：US16318405

    申请日：2017-07-21

    申请人： CELGARD, LLC

    发明人： Michael B. Lane ,  Insik Jeon ,  Edward Kruger ,  Xiang Yu ,  Ronnie E. Smith ,  Stefan Reinartz ,  Junqing Ma

    IPC分类号： H01M50/449 ,  C09D7/65 ,  C09D7/20 ,  C09D5/18 ,  C09D129/04 ,  C09D133/04 ,  C09D139/04 ,  H01M10/0525 ,  H01M50/411

    摘要： New and/or improved coatings for porous substrates, including battery separators or separator membranes, and/or coated porous substrates, including coated battery separators, and/or batteries or cells including such coatings or coated separators, and/or related methods including methods of manufacture and/or of use thereof are disclosed. Also, new or improved coatings for porous substrates, including battery separators, which comprise at least a polymeric binder and heat-resistant particles with or without additional additives, materials or components, and/or to new or improved coated porous substrates, including battery separators, where the coating comprises at least a polymeric binder and heat-resistant particles with or without additional additives, materials or components are disclosed. Further, new or improved coatings for porous substrates, including battery separators, and new and/or improved coated porous substrates, including battery separators, new or improved coatings for porous substrates, including battery separators, which comprise at least (i) a polymeric binder, (ii) heat-resistant particles, and (iii) at least one component selected from the group consisting of a cross-linker, a low-temperature shutdown agent, an adhesion agent, and a thickener, and new and/or improved coated porous substrates, including battery separators, where the coating comprises at least (i) a polymeric binder, (ii) heat-resistant particles, and (iii) at least one component selected from the group consisting of a cross-linker, a low-temperature shutdown agent, an adhesion agent, a thickener, a friction-reducing agent, a high-temperature shutdown agent are disclosed.

    ASSYMETRIC POROUS MEMBRANE
    9.
    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

    申请人： Celgard, LLC

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

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

    CPC分类号： H01M50/489 ,  H01M50/417 ,  H01M50/434 ,  H01M50/457

    摘要： 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+.