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公开(公告)号：US12110352B2
公开(公告)日：2024-10-08
申请号：US17311034
申请日：2019-12-02
IPC分类号： C08F214/22 , C08F2/22 , C08F2/38 , C08F214/18 , C08F214/28 , C08F220/06 , C08F220/20 , C08F222/20 , C08J3/12 , C08K3/36 , H01G11/30 , H01M50/403 , H01M50/426 , H01M50/446 , H01M50/449
CPC分类号： C08F214/22 , C08F2/22 , C08F2/38 , C08F214/28 , C08F220/06 , C08F220/20 , C08J3/12 , C08K3/36 , H01G11/30 , H01M50/403 , H01M50/426 , H01M50/446 , H01M50/449 , C08F2438/03 , C08F2810/40
摘要： The present invention pertains to an aqueous dispersion of a vinylidene fluoride polymer having a high molecular weight and possessing a substantially linear structure, leading to reduced amount of gels/insoluble fractions, to a method for its preparation and to its use for the manufacture of electrochemical cell components, such as electrodes and/or composite separators or for the manufacture of membranes.
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公开(公告)号：US11655325B2
公开(公告)日：2023-05-23
申请号：US16771663
申请日：2018-12-17
IPC分类号： H01M50/414 , H01M50/403 , C09D153/00 , C08F293/00 , H01M50/449 , H01G9/02 , H01G11/52 , H01M50/489 , H01M50/42 , H01M50/426
CPC分类号： C08F293/00 , C09D153/00 , H01G9/02 , H01G11/52 , H01M50/403 , H01M50/414 , H01M50/42 , H01M50/426 , H01M50/449 , H01M50/489
摘要： Provided are fluorinated block copolymers comprising alternating hard blocks and soft blocks, wherein both said hard and soft blocks comprise vinylidenfluoride (VDF). Also provided is the use of said block copolymers in applications for lithium batteries including an electrochemical cell and a separator for an electrochemical cell which is coated with a composition comprising the fluorinated block copolymers. Further provided is a process for the manufacture of the separator.
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公开(公告)号：US11555094B2
公开(公告)日：2023-01-17
申请号：US16638388
申请日：2018-03-20
发明人： Serena Carella , Eliana Ieva , Mirko Mazzola , Giulio Brinati
IPC分类号： C08J3/05 , C08J5/22 , C09D127/16 , H01G11/26 , H01G11/52 , H01G11/84 , H01M4/62 , H01M10/0525 , H01M50/403 , H01M50/411 , H01M50/449
摘要： The present invention relates to a method for stabilizing aqueous dispersions, notably of polymers based on vinylidene fluoride (VDF), and to the use of the stabilized aqueous dispersion thus obtained in electrochemical applications.
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公开(公告)号：US12071494B2
公开(公告)日：2024-08-27
申请号：US17311029
申请日：2019-12-02
IPC分类号： C08F214/22 , C08F220/06 , C08L27/16 , H01M4/62 , H01M50/42 , H01M50/426 , H01M50/449 , H01M50/403
CPC分类号： C08F214/22 , C08F214/225 , C08F220/06 , H01M4/623 , H01M50/42 , H01M50/426 , H01M50/449 , C08L27/16 , H01M50/403 , C08F214/225 , C08F2438/00 , C08F2500/17
摘要： The present invention pertains to an aqueous dispersion of a vinylidene fluoride polymer having a high molecular weight and possessing a substantially linear structure, leading to reduced amount of gels/insoluble fractions, to a method for its preparation and to its use for the manufacture of electrochemical cell components, such as electrodes and/or composite separators or for the manufacture of membranes.
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公开(公告)号：US20240186522A1
公开(公告)日：2024-06-06
申请号：US18552095
申请日：2022-03-22
发明人： Azzurra Agostini , Rosita Lissette Pena Cabrera , Mirko Mazzola , Giulio Brinati , Bradley Lane Kent , Marco Dossi
IPC分类号： H01M4/62 , C08F214/22 , H01M4/02 , H01M4/04 , H01M4/136 , H01M4/1397 , H01M4/58
CPC分类号： H01M4/623 , C08F214/225 , H01M4/0404 , H01M4/136 , H01M4/1397 , H01M4/5825 , C08F2800/10 , H01M2004/028
摘要： The present invention pertains to electrode-forming compositions, comprising an electro-active material and a VDF based polymer comprising at least 70% by moles of recurring units derived from VDF, less than 0.9% by moles of recurring units derived from monomers comprising a functional group selected from carbonylic, carboxylic, sulfonic, sulfinic, phosphonic, hydroxy, —SH, ester or mixtures thereof, having a TM between 130° C. and 180° C. and comprising less than 700 mmoles/kg of chain ends —CF2H and —CF2CH3. The composition has good adhesion and is physically stable over time. The invention also relates to the use of said electrode-forming compositions in a process for the manufacture of electrodes, to said electrodes and to electrochemical devices such as secondary batteries comprising said electrodes.
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公开(公告)号：US20240063506A1
公开(公告)日：2024-02-22
申请号：US18258657
申请日：2021-12-09
IPC分类号： H01M50/426 , H01G11/52 , H01M50/403 , H01M50/417 , H01M50/451 , H01M50/454 , H01M50/457
CPC分类号： H01M50/426 , H01G11/52 , H01M50/403 , H01M50/417 , H01M50/451 , H01M50/454 , H01M50/457
摘要： The present invention pertains to a coating composition comprising a vinylidene fluoride polymer aqueous dispersion and to its use for the manufacture of electrochemical cell components, such as separators.
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