公开(公告)号：US20220223928A1

公开(公告)日：2022-07-14

申请号：US17613104

申请日：2020-05-22

申请人： Celgard, LLC

发明人： Insik Jeon ,  James Rapley ,  Fru Azeh

IPC分类号： H01M10/42 ,  H01M50/446 ,  H01M50/491 ,  H01M50/451

摘要： A coated separator including a microporous film and a coating on at least one side of the microporous film, wherein the coated separator shuts down at a temperature less than or equal to 140° C. In some embodiments, the coating causes the separator to shutdown at a temperature lower than the temperature at which the microporous film would shrink more than 15%, more than 12%, more than 10%, or preferably more than 5% without any coating. The microporous film of the separator by itself (uncoated) does not shut down or does not shutdown at a temperature less than or equal to 140° C. The microporous film may shut down at a temperature between 140° C. and 350° C. The coating of the coated separator may contain polyethylene, binder, and inorganic or heat resistant fine particles. Fine particles may have a particle size D50 less than or equal to 500 nm.

公开(公告)号：US20230344081A1

公开(公告)日：2023-10-26

申请号：US17796264

申请日：2021-02-12

申请人： Celgard, LLC

发明人： Wenbin Yin ,  James Rapley ,  Xiang Yu ,  Stefan Reinartz ,  Yuji Masui ,  Daisuke Narushima ,  Yuya Iwasaki

IPC分类号： H01M50/451 ,  C09D7/61 ,  C09D7/63 ,  C09D7/45 ,  C09D7/65 ,  C09D7/43 ,  C09D133/14 ,  C09D4/00 ,  C09D171/02 ,  C07D303/16 ,  H01M50/489 ,  H01M50/457 ,  H01M50/434 ,  H01M50/446 ,  H01M50/42 ,  H01M50/429 ,  H01M50/403 ,  H01M50/414 ,  H01M10/42 ,  H01M50/443

CPC分类号： H01M50/451 ,  C09D7/61 ,  C09D7/63 ,  C09D7/45 ,  C09D7/65 ,  C09D7/43 ,  C09D133/14 ,  C09D4/00 ,  C09D171/02 ,  C07D303/16 ,  H01M50/489 ,  H01M50/457 ,  H01M50/434 ,  H01M50/446 ,  H01M50/42 ,  H01M50/4295 ,  H01M50/403 ,  H01M50/414 ,  H01M10/4235 ,  H01M50/443

摘要： A porous membrane having a cross-linked ceramic coating on at least one side thereof is disclosed. The coated porous membrane may be used as a battery separator, particularly a battery separator for a lithium ion battery. The coating includes at least a cross-linker and a ceramic. The cross-linker may be a particulate polymeric binder cross-linker, a PEO (PEG) cross-linker, or a POSS cross-linker. The coated membrane exhibits improved properties that may be favorable for its use as a battery separator. For example, the coated porous membrane may exhibit improved shrinkage properties and high temperature resistance.

公开(公告)号：US20220223976A1

公开(公告)日：2022-07-14

申请号：US17613106

申请日：2020-05-21

申请人： Celgard, LLC

发明人： Insik Jeon ,  James Rapley ,  Xiang Yu ,  Fru Azeh ,  Salvatore Cardillo

IPC分类号： H01M50/449 ,  H01M50/426 ,  H01M50/417 ,  H01M50/572 ,  H01M50/42

摘要： A coated separator or coated porous membrane comprising a coating on one or two sides of a separator membrane or porous membrane is disclosed. The coating may contain at least one of an adhesion agent, a shutdown agent, and a binder. The coating containing these components does not contain any inorganic or organic heat resistant materials, including ceramic materials, or it contains inorganic or organic heat resistant materials, including ceramic materials, in small amounts. The separator may be a separator that does not, by itself, have shutdown capability. For example, the separator membrane of the separator may be a monolayer separator membrane made of polypropylene. Also disclosed is a battery cell, a secondary battery, and a capacitor containing at least one of the coated separators disclosed herein.