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公开(公告)号：EP4269361A1
公开(公告)日：2023-11-01
申请号：EP21911077.2
申请日：2021-12-24
发明人： FUJIWARA, Kae , YAMADA, Takaya , SHINODA, Chihiro , TERADA, Junpei , YAMADA, Masahiko , YAMAZAKI, Shigeaki , PREDTECHENSKIY, Mikhail Rudolfovich , BOBRENOK, Oleg Filippovich
IPC分类号： C01G53/00 , C08F14/26 , C08L27/18 , H01M4/13 , H01M4/139 , H01M4/62 , H01G11/38 , C01B32/159 , C01B32/168 , C08K3/04 , H01M10/052
摘要： An object is to provide a binder capable of improving battery performance. Further, an object is to provide a binder, in an electrode using a polytetrafluoroethylene resin, capable of reducing resistance and achieving high strength of the electrode. A binder including a mixed powder including a polytetrafluoroethylene resin and a single-walled carbon nanotube. A method for producing a binder, including homogeneously mixing a polytetrafluoroethylene resin dispersion and a single-walled carbon nanotube dispersion by using water as a dispersion solvent, followed by drying to form a mixed powder.
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2.发明公开
公开(公告)号：EP3996167A1
公开(公告)日：2022-05-11
申请号：EP20835587.5
申请日：2020-06-30
发明人： SHINODA, Chihiro , KITAHARA, Takahiro , TERADA, Junpei , PREDTECHENSKIY, Mikhail Rudolfovich , BOBRENOK, Oleg Filippovich
摘要： Provided is a composition for an electrochemical device, the composition comprising a single-walled carbon nanotube, a binder, and a solvent, wherein the binder contains a fluorine-containing copolymer containing a vinylidene fluoride unit and a fluorinated monomer unit other than the vinylidene fluoride unit, and the content of the vinylidene fluoride unit in the fluorine-containing copolymer is 50.0 mol% or more relative to total monomer units.
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公开(公告)号：EP4130145A1
公开(公告)日：2023-02-08
申请号：EP21779533.5
申请日：2021-03-29
摘要： Provided is an electrode mixture containing a lithium-containing transition metal oxide; a conductive additive; a binder; and an organic solvent, wherein the conductive additive comprises at least one nanocarbon material selected from the group consisting of a multilayer carbon nanotube, a carbon nanohorn, a carbon nanofiber, a fullerene, and a graphene, the binder comprises a fluorine-containing copolymer comprising vinylidene fluoride unit and a fluorinated monomer unit, provided that vinylidene fluoride unit is excluded from the fluorinated monomer unit, and a content of vinylidene fluoride unit in the fluorine-containing copolymer is more than 50 mol% and 99 mol% or less with respect to all monomer units.
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4.发明公开
公开(公告)号：EP3680969A1
公开(公告)日：2020-07-15
申请号：EP18872208.6
申请日：2018-10-02
发明人： HOSODA, Kazuki , KITAHARA, Takahiro , FUJISAWA, Manabu , IGUCHI, Takashi , ASANO, Kazuya , SHINODA, Chihiro
IPC分类号： H01M4/62 , C08F214/22 , C08F214/26 , C08F220/04 , H01M4/13 , H01M4/139
摘要： The invention provides a binder for a secondary battery leading to an excellently high density of an electrode, excellent adhesiveness to a current collector, excellent flexibility of an electrode, and excellent viscosity retention of slurry. The binder for a secondary battery contains a fluorine-containing polymer (A) and polyvinylidene fluoride (B). The fluorine-containing polymer (A) contains a polymerized unit based on vinylidene fluoride, a polymerized unit based on tetrafluoroethylene, and a polymerized unit based on a monomer (2-2) represented by the following formula (2-2):
wherein R 5 , R 6 , and R 7 are each independently a hydrogen atom or a C1-C8 hydrocarbon group; R 8 is a C1-C8 hydrocarbon group; and Y 1 is an inorganic cation or an organic cation.-
公开(公告)号：EP3863081A1
公开(公告)日：2021-08-11
申请号：EP19869139.6
申请日：2019-09-30
IPC分类号： H01M4/131 , H01M4/1391 , H01M4/62
摘要： Provided is a positive electrode structure including a current collector and a positive electrode mixture layer provided on one or each of both sides of the current collector, wherein the positive electrode mixture layer has a thickness of 69 µm or more, the positive electrode mixture layer has a density of 3.0 to 5.0 g/cm 3 , the positive electrode mixture layer includes a positive electrode active material and a binder, the positive electrode active material includes a lithium-nickel composite oxide, the binder includes a fluorine-containing copolymer, the fluorine-containing copolymer contains a vinylidene fluoride unit and a fluorinated monomer unit (excluding the vinylidene fluoride unit), and the fluorine-containing copolymer has a storage modulus (E') at 30°C of 100 to 1,100 MPa and a storage modulus (E') at 60°C of 50 to 500 MPa, as measured by dynamic viscoelasticity.
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公开(公告)号：EP3608992A1
公开(公告)日：2020-02-12
申请号：EP18805302.9
申请日：2018-03-27
IPC分类号： H01M2/16
摘要： The invention provides a secondary battery separator that includes a porous substrate and a porous film firmly bonded to each other and has excellent low-temperature processibility and electrolyte solution resistance. The separator includes a porous substrate and a porous film on or above the porous substrate. The porous film contains a fluorine-containing polymer that contains a polymerized unit based on vinylidene fluoride, a polymerized unit based on tetrafluoroethylene, and a polymerized unit based on a monomer (2-2) represented by the following formula (2-2): R 5 R 6 C = CR 7 R 8 CO 2 Y 1 wherein R 5 , R 6 , and R 7 are each independently a hydrogen atom or a C1-C8 hydrocarbon group; R 8 is a C1-C8 hydrocarbon group; and Y 1 is an inorganic cation and/or an organic cation.
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