公开(公告)号：EP3696887A1

公开(公告)日：2020-08-19

申请号：EP18866004.7

申请日：2018-10-10

申请人： Nissan Motor Co., Ltd.

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

IPC分类号： H01M4/13 ,  H01M4/62 ,  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.

公开(公告)号：EP3809501A1

公开(公告)日：2021-04-21

申请号：EP19820114.7

申请日：2019-05-30

申请人： NISSAN MOTOR CO., LTD.

发明人： IKEDA, Yoshihiro ,  KUSANO, Ryosuke ,  TSUDO, Yasuhiro ,  OSAWA, Yasuhiko ,  KUSACHI, Yuki ,  SATO, Hajime ,  AKAMA, Hiroshi ,  HORIE, Hideaki

IPC分类号： H01M4/66

摘要： To provide a resin current collector which exhibits liquid bleeding prevention property and low resistance, can suppress the generation of an oxidation current, and exhibits moldability that enables film thinning.
A resin current collector containing a polyolefin resin and two kinds of conductive carbon fillers, a first conductive carbon filler (A1) and a second conductive carbon filler (A2), in which the first conductive carbon filler (A1) is graphite or carbon black, the second conductive carbon filler (A2) is a carbon nanotube or a carbon nanofiber having a specific surface area of 35 to 300 m 2 /g, a total surface area of the first conductive carbon filler (A1) contained in 1 g of the resin current collector is 0.5 to 9.0 m 2 , and a mass proportion of the first conductive carbon filler (A1) is 30% by mass or less with respect to a mass of the resin current collector.

公开(公告)号：EP3699988A1

公开(公告)日：2020-08-26

申请号：EP18868942.6

申请日：2018-10-15

申请人： Nissan Motor Co., Ltd.

发明人： KUSANO, Ryosuke ,  IKEDA, Yoshihiro ,  TSUDO, Yasuhiro ,  OHSAWA, Yasuhiko ,  KUSACHI, Yuki ,  SATOU, Hajime ,  AKAMA, Hiroshi ,  HORIE, Hideaki

IPC分类号： H01M4/66

摘要： To provide means for improving the cycle characteristics in a lithium ion battery.
A resin current collector includes a polyolefin resin, and a conductive carbon filler. The total surface area of the conductive carbon filler contained in 1 g of the resin current collector is 7.0 m 2 or more and 10.5 m 2 or less.

公开(公告)号：EP3696891A1

公开(公告)日：2020-08-19

申请号：EP18865630.0

申请日：2018-10-10

申请人： Nissan Motor Co., Ltd.

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

IPC分类号： H01M4/139 ,  H01M4/13 ,  H01M4/62

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：EP3696885A1

公开(公告)日：2020-08-19

申请号：EP18865631.8

申请日：2018-10-10

申请人： Nissan Motor Co., Ltd.

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

IPC分类号： H01M4/13 ,  H01M4/62

摘要： To provide a means capable of achieving excellent input/output characteristics and cycle durability in a non-aqueous electrolyte secondary battery which is suitable for mounting on a vehicle.
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, in which the first electrode active material layer includes a binder in a crystallized state and the second electrode active material layer does not substantially include a binder in a crystallized state.