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    ELECTRODE AND SECONDARY BATTERY, AND MANUFACTURING METHOD THEREOF
    2.
    发明申请
    ELECTRODE AND SECONDARY BATTERY, AND MANUFACTURING METHOD THEREOF 审中-公开
    电极和二次电池及其制造方法

    公开(公告)号：US20150111107A1

    公开(公告)日：2015-04-23

    申请号：US14519443

    申请日：2014-10-21

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Teppei OGUNI ,  Minoru TAKAHASHI ,  Kai KIMURA

    IPC: H01M4/02 ,  H01M4/583 ,  H01M4/64

    CPC classification number: H01M4/133 ,  H01M4/587 ,  H01M4/661 ,  H01M4/667 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2220/30

    Abstract: To improve the adhesion between a current collector and an electrode active material so as to improve long-term reliability. An electrode is formed in the following manner: an electrode active material (a negative electrode active material or a positive electrode active material) is formed over a base, a conductive film is formed over the electrode active material by a sputtering method, the base and the electrode active material are separated at the interface therebetween, and the electrode active material is made in contact with a current collector. The conductive film has a surface with projections and depressions because the conductive film is formed on the electrode active material containing particles. Accordingly, moderate adhesion can be provided between the conductive film and the current collector, with which stress at the interface between the conductive film and the current collector can be reduced while conductivity is maintained.

    Abstract translation: 为了提高集电体与电极活性物质的密合性，提高长期可靠性。 以下述方式形成电极：在基底上形成电极活性物质（负极活性物质或正极活性物质），通过溅射法在电极活性物质的上方形成导电膜， 电极活性物质在它们之间的界面处分离，并且使电极活性材料与集电体接触。 由于导电膜形成在含有颗粒的电极活性物质上，所以导电膜具有具有凹凸的表面。 因此，可以在导电膜和集电体之间提供适度的粘合，由此可以减小导电膜和集电体之间的界面处的应力，同时保持导电性。

    ELECTRODE, POWER STORAGE DEVICE, AND ELECTRONIC DEVICE
    3.
    发明申请
    ELECTRODE, POWER STORAGE DEVICE, AND ELECTRONIC DEVICE 有权
    电极，电力存储装置和电子装置

    公开(公告)号：US20150207148A1

    公开(公告)日：2015-07-23

    申请号：US14598344

    申请日：2015-01-16

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Kai KIMURA ,  Kazutaka KURIKI ,  Teppei OGUNI ,  Aya UCHIDA

    IPC: H01M4/62 ,  H01G11/58 ,  H01G11/42 ,  H01M4/583 ,  H01G11/28

    CPC classification number: H01M4/622 ,  H01G11/24 ,  H01G11/26 ,  H01G11/28 ,  H01G11/38 ,  H01M4/13 ,  H01M4/133 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0566 ,  H01M10/446 ,  H01M2004/021 ,  H01M2010/4292 ,  H01M2220/20 ,  H01M2220/30 ,  Y02E60/122 ,  Y02E60/13 ,  Y02T10/7011 ,  Y02T10/7022

    Abstract: A power storage device with high capacity or high energy density is provided. A highly reliable power storage device is provided. A long-life power storage device is provided. An electrode includes an active material, a first binder, and a second binder. The specific surface area of the active material is S [m2/g]. The weight of the active material, the weight of the first binder, and the weight of the second binder are a, b, and c, respectively. The solution of {(b+c)/(a+b+c)}×100÷S is 0.3 or more. The electrode includes a first film in contact with the active material. The first film preferably includes a region in contact with the active material. The first film preferably includes a region with a thickness of 2 nm or more and 20 nm or less. The first film contains a water-soluble polymer.

    Abstract translation: 提供具有高容量或高能量密度的蓄电装置。 提供了高度可靠的蓄电装置。 提供了一种长寿命蓄电装置。 电极包括活性材料，第一粘合剂和第二粘合剂。 活性物质的比表面积为S [m2 / g]。 活性物质的重量，第一粘合剂的重量和第二粘合剂的重量分别为a，b和c。 {（b + c）/（a + b + c）}×100÷S的解为0.3以上。 电极包括与活性材料接触的第一膜。 第一膜优选包括与活性物质接触的区域。 第一膜优选包括厚度为2nm以上且20nm以下的区域。 第一层膜含有水溶性聚合物。

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