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公开(公告)号：US20230378470A1
公开(公告)日：2023-11-23
申请号：US18362325
申请日：2023-07-31
发明人： Takaya YAMADA , Masahiko Yamada , Kentarou Hiraga , Junpei Terada , Kae Fujiwara , Xianwei Sui , Katsusada Tokuhira , Ryouta Usami , Seika Fujioka
摘要： A method for producing a secondary battery electrode using a non-aqueous electrolyte, which includes: (1) preparing a composition for producing an electrode substantially free of a liquid medium by using a binder that is a powder which is composed of a composition essentially including a polytetrafluoroethylene resin and a conductive aid and which is free of an active material, and (2) preparing the composition into a sheet by applying shear stress to the composition in solvent content of 10% mass or less relative to the composition. Also disclosed is a binder for a secondary battery electrode using a non-aqueous electrolyte, that is a powder which is composed of a composition essentially including a polytetrafluoroethylene resin and a conductive aid in a proportion of 90:10 to 65:35 in terms of weight ratio and which is free of an electrode active material.
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2.发明公开公开(公告)号：US20230395804A1
公开(公告)日：2023-12-07
申请号：US18362372
申请日：2023-07-31
发明人： Takaya Yamada , Masahiko Yamada , Kentarou Hiraga , Xianwei Sui , Junpei Terada , Kae Fujiwara , Seika Fujioka , Katsusada Tokuhira , Ryouta Usami
IPC分类号： H01M4/62 , H01M10/0525 , H01M10/0587
CPC分类号： H01M4/623 , H01M10/0525 , H01M4/625 , H01M10/0587
摘要： A method for producing a solid-state secondary battery sheet, which includes: (1) preparing a composition for producing a secondary battery sheet by using a binder that is a powder which comprises a polytetrafluoroethylene resin and a conductive aid homogeneously mixed and which is free of an active material, and (2) preparing the composition into a sheet by applying shear stress to the composition in solvent content of 10% mass or less relative to the composition. Also disclosed is a binder for a solid-state secondary battery, that is a powder which is composed of a composition essentially including a polytetrafluoroethylene resin and a conductive aid in a weight ratio proportion of 90:10 to 65:35 and which is free of an electrode active material. Also disclosed is a binder for a solid-state secondary battery electrode including a mixed powder of a polytetrafluoroethylene resin and ketjen black and/or a carbon nanotube.
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