公开(公告)号：US20200295346A1

公开(公告)日：2020-09-17

申请号：US16753046

申请日：2018-10-10

申请人： NISSAN MOTOR CO., LTD.

发明人： Hiroyuki TANAKA ,  Takeshi NAKANO ,  Sota SHIBAHARA ,  Takamasa NAKAGAWA ,  Kenichiro ENOKI ,  Yoshihiro IKEDA ,  Naoki MAEO ,  Shogo ISOMURA

IPC分类号： H01M4/04 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0569

摘要： To provide a means capable of suppressing the generation of cracks in an electrode active material layer in the production of an electrode for a non-aqueous electrolyte secondary battery.Provided is a method for producing an electrode for use in a non-aqueous electrolyte secondary battery, including a current collector and an electrode active material layer including an electrode active material, arranged on a surface of the current collector, and a dispersion is by mixing the electrode active material, a binder formed of polyvinylidene fluoride (PVdF), a first solvent in which the polyvinylidene fluoride (PVdF) is not dissolved, and a second solvent in which the polyvinylidene fluoride (PVdF) can be dissolved. Then, an electrode active material slurry is prepared by removing the second solvent from the obtained dispersion. Then, a coating film is formed by coating the obtained electrode active material slurry on the surface of the current collector, thereby producing an electrode.

公开(公告)号：US20230387392A1

公开(公告)日：2023-11-30

申请号：US18232732

申请日：2023-08-10

申请人： NISSAN MOTOR CO., LTD.

发明人： Hiroyuki TANAKA ,  Kenichiro ENOKI ,  Yoshihiro IKEDA ,  Naoki MAEO ,  Shogo ISOMURA

IPC分类号： H01M4/36 ,  H01M4/62

CPC分类号： H01M4/366 ,  H01M4/621 ,  H01M2004/021

摘要： An electrode for a non-aqueous electrolyte secondary battery, includes a current collector; a first electrode active material layer including a first electrode active material, arranged on a surface of the current collector; and a second electrode active material layer including a second electrode active material, arranged on a surface of the first electrode active material layer. The first electrode active material layer includes a binder in a crystallized state, and the second electrode active material layer does not include a binder. A thickness of the second electrode active material layer is 150 μm or more, and a total of a thickness of the first electrode active material layer and the thickness of the second electrode active material layer is 250 μm or more. A ratio of the thickness of the first electrode active material layer to the thickness of the second electrode active material layer is 0.108 or less.

公开(公告)号：US20200274164A1

公开(公告)日：2020-08-27

申请号：US16754254

申请日：2018-10-10

申请人： NISSAN MOTOR CO., LTD.

发明人： Takeshi NAKANO ,  Hiroyuki TANAKA ,  Takamasa NAKAGAWA ,  Sota SHIBAHARA ,  Kenichiro ENOKI ,  Yoshihiro IKEDA ,  Naoki MAEO ,  Shogo ISOMURA

IPC分类号： H01M4/62 ,  H01M10/0525 ,  H01M4/04 ,  H01M10/0566

摘要： To provide an electrode for a non-aqueous electrolyte secondary battery which retains the shape while retaining a discharge capacity at a high rate.An electrode for a non-aqueous electrolyte secondary battery has a current collector and an electrode active material layer arranged on a surface of the current collector, and is used for a non-aqueous electrolyte secondary battery having a liquid volume coefficient of 1.4 to 2.0, in which the electrode active material layer includes an electrode active material and a binder including polyvinylidene fluoride (PVdF), and the polyvinylidene fluoride (PVdF) is in a non-crystallized state and is included in the range of 0.5 to 3.3% by volume with respect to the total volume of the electrode in the electrode active material layer.