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    METHOD FOR PRODUCING ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
    2.
    发明公开
    METHOD FOR PRODUCING ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY 审中-公开

    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.

    BATTERY DEVICE
    4.
    发明公开
    BATTERY DEVICE 审中-公开

    公开(公告)号：EP3817122A1

    公开(公告)日：2021-05-05

    申请号：EP19811557.8

    申请日：2019-05-22

    申请人： NISSAN MOTOR CO., LTD.

    发明人： NAKAGAWA, Takamasa ,  NAKANO, Takeshi ,  TANAKA, Hiroyuki ,  NAKASHIMA, Yusuke ,  SHOJI, Naofumi

    IPC分类号： H01M10/0585 ,  H01M4/13 ,  H01M10/0566

    摘要： [Problem]
    To provide a means which enables a nonaqueous electrolyte secondary battery to decrease the internal resistance of the battery and to improve the cycle characteristics, while suppressing decrease of the energy density of the battery to the minimum, said nonaqueous electrolyte secondary battery using an electrode wherein an electrode active material layer, which is formed of a non-binding body that does not contain a binder which is crystallized by heating, is arranged on the surface of a collector. [Solution] A battery device according to the present invention comprises: a nonaqueous electrolyte secondary battery which is provided with an electric power generating element; and a pressing member which presses the electric power generating element in the stacking direction of the electric power generating element. This battery device is configured such that the electric power generating element comprises : a positive electrode that is obtained by forming a positive electrode active material layer, which is formed of a non-binding body containing a positive electrode active material, on the surface of a positive electrode collector; a negative electrode that is obtained by forming a negative electrode active material layer, which is formed of a non-binding body containing a negative electrode active material, on the surface of a negative electrode collector; and a separator which holds an electrolyte solution. In addition, this battery device satisfies mathematical formula (1) 0.1

    ELECTRODE FOR CELL, AND CELL
    5.
    发明公开
    ELECTRODE FOR CELL, AND CELL 审中-公开

    公开(公告)号：EP3537511A1

    公开(公告)日：2019-09-11

    申请号：EP17866928.9

    申请日：2017-11-02

    申请人： Nissan Motor Co., Ltd.

    发明人： ARIHARA, Kazuki ,  NAKAGAWA, Takamasa ,  HORIE, Hideaki ,  KUSACHI, Yuuki ,  KOIKE, Masanori ,  OKURA, Hitohisa

    IPC分类号： H01M4/02 ,  H01M4/66 ,  H01M4/70 ,  H01M4/13

    摘要： An electrode for a cell includes a resin current collector that is planate and contains a resin and an electrically conductive filler, and an electrode active material layer that is disposed on at least one surface side of the resin current collector and that contains electrode active material particles. The resin current collector includes an electrically conductive layer on its surface side facing the electrode active material layer, the electrically conductive layer having configuration with recesses and projections. This configuration with recesses and projections satisfies the relationship given by formula (1): h / tan θ

    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY ELECTRODE
    7.
    发明公开
    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY ELECTRODE 审中-公开

    公开(公告)号：EP3696888A1

    公开(公告)日：2020-08-19

    申请号：EP18866439.5

    申请日：2018-10-10

    申请人： Nissan Motor Co., Ltd.

    发明人： NAKANO, Takeshi ,  TANAKA, Hiroyuki ,  NAKAGAWA, Takamasa ,  SHIBAHARA, Sota ,  KAWAKITA, Kenichi

    IPC分类号： H01M4/13 ,  H01M4/62 ,  H01M10/0566

    摘要： To provide an electrode for a non-aqueous electrolyte secondary battery, having excellent shape retention of an electrode active material layer and exhibiting high cycle durability.
    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 or more, in which the electrode active material layer includes an electrode active material and polyvinylidene fluoride (PVdF), and the polyvinylidene fluoride (PVdF) binds the electrode active material in a fibrous form in the electrode active material layer.

    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY ELECTRODE
    8.
    发明公开
    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY ELECTRODE 审中-公开

    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.

    ELECTRICAL DEVICE
    9.
    发明公开
    ELECTRICAL DEVICE 有权
    电气装置

    公开(公告)号：EP3098890A1

    公开(公告)日：2016-11-30

    申请号：EP14879602.2

    申请日：2014-01-24

    申请人： NISSAN MOTOR CO., LTD.

    发明人： NAKAGAWA, Takamasa ,  YAMAMOTO, Shinji

    IPC分类号： H01M10/052 ,  H01M4/133 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M4/46 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/587 ,  H01M4/131 ,  H01M4/48 ,  H01M10/0525

    CPC分类号： H01M10/0525 ,  H01M4/131 ,  H01M4/134 ,  H01M4/366 ,  H01M4/386 ,  H01M4/483 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/446 ,  Y02T10/7011

    摘要： To provide a means for sufficiently utilizing a high capacity characteristic of a solid solution positive electrode active material and capable of achieving satisfactory performance of a rate characteristic in an electrical device such as a lithium ion secondary battery containing a positive electrode using the solid solution positive electrode active material.
    An electrical device has a power generating element containing a positive electrode in which a positive electrode active material layer containing a positive electrode active material is formed on a surface of a positive electrode current collector, a negative electrode in which a negative electrode active material layer containing a negative electrode active material is formed on a surface of a negative electrode current collector, and a separator. The coating amount of the negative electrode active material layer is from 3 to 11 mg/cm 2 , and the negative electrode active material layer contains a negative electrode active material represented by formula (1) . The positive electrode active material layer contains a positive electrode active material (solid solution positive electrode active material) represented by formula (2), and a material represented by formula (3) and having a predetermined amount of a predetermined element M on particle surfaces is used as the solid solution positive electrode active material contained in the positive electrode active material layer.

    摘要翻译： 为了提供充分利用固溶体正极活性物质的高容量特性，并且能够在使用固溶体正极的含有正极的锂离子二次电池等电气设备中实现充分的速率特性的方法 活性物质。 电气设备具有发电元件，该发电元件包含：正极，其中含有正极活性物质的正极活性物质层形成在正极集电体的表面上;负极，其中负极活性物质层含有 负极活性物质形成在负极集电体的表面和隔板上。 负极活性物质层的涂布量为3〜11mg / cm 2，负极活性物质层含有式（1）所示的负极活性物质。 正极活性物质层含有式（2）所示的正极活性物质（固溶体正极活性物质）和式（3）所示的材料，粒子表面上的规定量的规定元素M为 用作包含在正极活性物质层中的固溶体正极活性物质。