公开(公告)号：US20210036293A1

公开(公告)日：2021-02-04

申请号：US17020347

申请日：2020-09-14

申请人： Celgard, LLC

发明人： 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分类号： H01M2/16 ,  H01M2/14 ,  H01M2/18 ,  H01M10/42

摘要： 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.

公开(公告)号：US12040456B2

公开(公告)日：2024-07-16

申请号：US18102094

申请日：2023-01-27

申请人： Celgard, LLC

发明人： 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分类号： H01M10/42 ,  B29C48/00 ,  B29C48/21 ,  B29C65/02 ,  B32B27/08 ,  B32B27/32 ,  B32B37/16 ,  B32B38/00 ,  H01M10/052 ,  H01M50/403 ,  H01M50/411 ,  H01M50/417 ,  H01M50/431 ,  H01M50/434 ,  H01M50/44 ,  H01M50/446 ,  H01M50/449 ,  H01M50/451 ,  H01M50/457 ,  H01M50/463 ,  B29C48/08 ,  B29C55/00 ,  B29C55/02 ,  B29C55/14 ,  B29C65/00 ,  B32B37/14 ,  H01M50/489 ,  H01M50/491 ,  H01M50/494

CPC分类号： H01M10/4235 ,  H01M50/403 ,  H01M50/411 ,  H01M50/417 ,  H01M50/431 ,  H01M50/434 ,  H01M50/44 ,  H01M50/446 ,  H01M50/449 ,  H01M50/451 ,  H01M50/457 ,  H01M50/463 ,  B29C48/022 ,  B29C48/08 ,  B29C48/21 ,  B29C55/005 ,  B29C55/023 ,  B29C55/143 ,  B29C65/02 ,  B29C66/45 ,  B29C66/723 ,  B29C66/727 ,  B32B27/08 ,  B32B27/32 ,  B32B37/144 ,  B32B37/16 ,  B32B2038/0028 ,  B32B2250/03 ,  B32B2307/518 ,  B32B2457/10 ,  H01M10/052 ,  H01M50/489 ,  H01M50/491 ,  H01M50/494 ,  H01M2220/20 ,  Y02E60/10 ,  Y02P70/50

摘要： 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.

公开(公告)号：US20230238587A1

公开(公告)日：2023-07-27

申请号：US18102094

申请日：2023-01-27

申请人： Celgard, LLC

发明人： 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分类号： H01M10/42 ,  H01M50/44 ,  H01M50/446 ,  H01M50/417 ,  H01M50/434 ,  H01M50/457 ,  H01M50/451 ,  H01M50/403 ,  H01M50/463 ,  H01M50/449 ,  H01M50/431 ,  H01M50/411

CPC分类号： H01M10/4235 ,  H01M50/44 ,  H01M50/446 ,  H01M50/417 ,  H01M50/434 ,  H01M50/457 ,  H01M50/451 ,  H01M50/403 ,  H01M50/463 ,  H01M50/449 ,  H01M50/431 ,  H01M50/411 ,  H01M10/052

摘要： 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 calendaring 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.

公开(公告)号：US11569549B2

公开(公告)日：2023-01-31

申请号：US17020347

申请日：2020-09-14

申请人： Celgard, LLC

发明人： 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分类号： H01M50/449 ,  H01M10/42 ,  H01M50/44 ,  H01M50/403 ,  H01M50/411 ,  H01M50/431 ,  H01M50/446 ,  H01M50/463 ,  H01M10/052 ,  B32B38/00 ,  B29C48/00 ,  B29C65/02 ,  B32B27/32 ,  B32B27/08 ,  B32B37/16 ,  B29C48/21 ,  B29C55/14 ,  B29C65/00 ,  B29C48/08 ,  B29C55/02 ,  B32B37/14 ,  B29C55/00

摘要： 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.

公开(公告)号：US10777800B2

公开(公告)日：2020-09-15

申请号：US15267566

申请日：2016-09-16

申请人： Celgard, LLC

发明人： 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分类号： H01M2/14 ,  H01M2/16 ,  B32B27/32 ,  B32B27/08 ,  B32B37/14 ,  B32B38/00 ,  B32B37/00 ,  B29C48/08 ,  B29C48/21 ,  B29C48/00 ,  B29C55/00 ,  B29C55/02 ,  B29C55/14 ,  B29C65/02 ,  B29C65/00 ,  H01M2/18 ,  H01M10/42 ,  H01M10/052 ,  B32B37/16

摘要： 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.

公开(公告)号：US20230102962A1

公开(公告)日：2023-03-30

申请号：US17982276

申请日：2022-11-07

申请人： Celgard, LLC

发明人： Barry J. Summey ,  Takahiko Kondo ,  William John Mason ,  Kang Karen Xiao ,  Robert Moran ,  Jeffrey G. Poley ,  Brian R. Stepp ,  Kristoffer K. Stokes ,  Xiaomin Zhang

IPC分类号： B01D67/00 ,  H01M50/491 ,  H01M50/406 ,  H01M50/417 ,  B29C55/12 ,  H01M50/463 ,  H01M50/494 ,  B01D69/02 ,  H01M50/451 ,  B01D69/12 ,  H01M50/446 ,  H01M50/403 ,  H01M50/449 ,  B01D71/26 ,  H01M10/0525 ,  H01M50/457 ,  B29C48/00 ,  B29K23/00 ,  B29L31/34 ,  B29L31/00

摘要： This application is directed to new and/or improved MD and/or TD stretched and optionally calendered membranes, separators, base films, microporous membranes, battery separators including said separator, base film or membrane, batteries including said separator, and/or methods for making and/or using such membranes, separators, base films, microporous membranes, battery separators and/or batteries. For example, new and/or improved methods for making microporous membranes, and battery separators including the same, that have a better balance of desirable properties than prior microporous membranes and battery separators. The methods disclosed herein comprise the following steps: 1.) obtaining a non-porous membrane precursor; 2.) forming a porous biaxially-stretched membrane precursor from the non-porous membrane precursor; 3.) performing at least one of (a) calendering, (b) an additional machine direction (MD) stretching, (c) an additional transverse direction (TD) stretching, and (d) a pore-filling on the porous biaxially stretched precursor to form the final microporous membrane. The microporous membranes or battery separators described herein may have the following desirable balance of properties, prior to application of any coating: a TD tensile strength greater than 200 or 250 kg/cm2, a puncture strength greater than 200, 250, 300, or 400 gf, and a JIS Gurley greater than 20 or 50 s.

公开(公告)号：US20220216568A1

公开(公告)日：2022-07-07

申请号：US17613113

申请日：2020-05-22

申请人： Celgard, LLC

发明人： Stefan Reinartz ,  Katharine Chemelewski ,  Barry j. Summey ,  Robert Moran

IPC分类号： H01M50/403 ,  H01M50/434 ,  H01M50/494 ,  H01M50/457

摘要： A coated battery separator is described herein. The coated battery separator includes a porous membrane with a coating on at least one side thereof, wherein the coated separator exhibits at least one of improved thickness uniformity of the coating and improved adhesion of the coating to the porous membrane. In some embodiments, the coated battery separator is thin or ultrathin. A method for forming a coated battery separator that exhibits the aforementioned properties is also described. The method may include steps of forming a coating and calendering the coating. In some embodiments, calendering is performed on a dried coating. In some embodiments, the coating is or includes a ceramic coating, a polymer coating, a sticky coating, a shutdown coating, or combinations thereof.

公开(公告)号：US20170084898A1

公开(公告)日：2017-03-23

申请号：US15267566

申请日：2016-09-16

申请人： Celgard, LLC

发明人： 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分类号： H01M2/16 ,  H01M10/052 ,  H01M2/14

摘要： 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.