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    STORAGE BATTERY ELECTRODE, MANUFACTURING METHOD THEREOF, STORAGE BATTERY, AND ELECTRONIC DEVICE
    16.
    发明申请
    STORAGE BATTERY ELECTRODE, MANUFACTURING METHOD THEREOF, STORAGE BATTERY, AND ELECTRONIC DEVICE 审中-公开
    存储电池电极，其制造方法，储存电池和电子设备

    公开(公告)号：US20160118666A1

    公开(公告)日：2016-04-28

    申请号：US14885583

    申请日：2015-10-16

    Applicant: Semiconductor Energy Laboratory Co., LTD.

    Inventor： Tatsuya IKENUMA ,  Takahiro KAWAKAMI ,  Yohei MOMMA ,  Teruaki OCHIAI

    IPC: H01M4/62 ,  H01M4/04 ,  H01M10/0525

    CPC classification number: H01M4/625 ,  H01M4/0404 ,  H01M4/139 ,  H01M4/621 ,  H01M4/623 ,  H01M10/052 ,  H01M2220/30 ,  Y02E60/122 ,  Y02P70/54

    Abstract: In manufacture of a storage battery electrode containing graphene as a conductive additive, the efficiency of reduction of graphene oxide under mild conditions is increased, and cycle characteristics and rate characteristics of a storage battery are improved. Provided is a manufacturing method of a storage battery electrode. In the manufacturing method, a first mixture containing an active material, graphene oxide, and a solvent is formed; a reducing agent is added to the first mixture and the graphene oxide is reduced to form a second mixture; a binder is mixed with the second mixture to form a third mixture; and the third mixture is applied to a current collector and the solvent is evaporated to form an active material layer.

    Abstract translation: 在制造含有石墨烯作为导电添加剂的蓄电池电极的情况下，在温和条件下氧化石墨烯的还原效率提高，蓄电池的循环特性和速率特性提高。 提供一种蓄电池电极的制造方法。 在制造方法中，形成含有活性物质，石墨烯氧化物和溶剂的第一混合物， 向第一混合物中加入还原剂，还原氧化石墨烯以形成第二混合物; 将粘合剂与第二混合物混合以形成第三混合物; 并将第三混合物施加到集电器上，并蒸发溶剂以形成活性物质层。

    PARTICLE, ELECTRODE, POWER STORAGE DEVICE, ELECTRONIC DEVICE, AND METHOD FOR MANUFACTURING ELECTRODE
    17.
    发明申请
    PARTICLE, ELECTRODE, POWER STORAGE DEVICE, ELECTRONIC DEVICE, AND METHOD FOR MANUFACTURING ELECTRODE 审中-公开
    电极，电极，电力储存装置，电子装置及制造电极的方法

    公开(公告)号：US20160118658A1

    公开(公告)日：2016-04-28

    申请号：US14920650

    申请日：2015-10-22

    Applicant: Semiconductor Energy Laboratory Co., LTD.

    Inventor： Takahiro KAWAKAMI ,  Teruaki OCHIAI ,  Shuhei YOSHITOMI ,  Takuya HIROHASHI ,  Mako MOTOYOSHI ,  Yohei MOMMA ,  Junya GOTO

    IPC: H01M4/505 ,  H01M4/36

    CPC classification number: H01M4/505 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/366 ,  H01M2220/30

    Abstract: To increase capacity per weight of a power storage device, a particle includes a first region, a second region in contact with at least part of a surface of the first region and located on the outside of the first region, and a third region in contact with at least part of a surface of the second region and located on the outside of the second region. The first and the second regions contain lithium and oxygen. At least one of the first region and the second region contains manganese. At least one of the first and the second regions contains an element M. The first region contains a first crystal having a layered rock-salt structure. The second region contains a second crystal having a layered rock-salt structure. An orientation of the first crystal is different from an orientation of the second crystal.

    Abstract translation: 为了增加蓄电装置的重量，颗粒包括第一区域，与第一区域的表面的至少一部分接触并位于第一区域的外部的第二区域和接触的第三区域 具有第二区域的表面的至少一部分并且位于第二区域的外侧。 第一和第二区域包含锂和氧。 第一区域和第二区域中的至少一个含有锰。 第一区域和第二区域中的至少一个包含元素M.第一区域包含具有层状岩盐结构的第一晶体。 第二区域包含具有层状岩盐结构的第二晶体。 第一晶体的取向与第二晶体的取向不同。

    SECONDARY BATTERY, MANUFACTURING METHOD OF SECONDARY BATTERY, ELECTRONIC DEVICE, AND VEHICLE
    19.
    发明公开
    SECONDARY BATTERY, MANUFACTURING METHOD OF SECONDARY BATTERY, ELECTRONIC DEVICE, AND VEHICLE 审中-公开

    公开(公告)号：US20230343952A1

    公开(公告)日：2023-10-26

    申请号：US18002197

    申请日：2021-06-15

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Yohei MOMMA ,  Mayumi MIKAMI ,  Teruaki OCHIAI

    IPC: H01M4/525 ,  H01M4/1315 ,  H01M10/04 ,  H01M4/04 ,  C01G51/00

    CPC classification number: H01M4/525 ,  H01M4/1315 ,  H01M10/049 ,  H01M4/0471 ,  C01G51/42 ,  H01M2004/028

    Abstract: A positive electrode active material with high charge and discharge capacity is provided. A positive electrode active material with high charge and discharge voltage is provided. A positive electrode active material that hardly deteriorates is provided. The positive electrode active material is formed through a plurality of heating steps. The second and subsequent heating steps are preferably performed at a temperature higher than or equal to 742° C. and lower than or equal to 920° C. for longer than or equal to an hour and shorter than or equal to 10 hours. Through the heating, magnesium, fluorine, and the like are distributed in a surface portion of the positive electrode active material with preferable concentrations. The crystal structure of general lithium cobalt oxide is easily broken because it becomes the H1-3 phase type crystal structure when being charged at 4.6 V; on the other hand, the positive electrode active material of the present invention has a small ratio of the H1-3 type crystal structure when being charged at 4.6 V, and has the O3′ type crystal structure where a change in the crystal structure from discharging is relatively small, and thus has excellent cycle performance.

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