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    POWER STORAGE DEVICE
    21.
    发明申请
    POWER STORAGE DEVICE 审中-公开
    电源存储设备

    公开(公告)号：US20160118637A1

    公开(公告)日：2016-04-28

    申请号：US14919136

    申请日：2015-10-21

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Kazuhei NARITA ,  Jun Ishikawa ,  Teppei Oguni ,  Aya Uchida

    IPC: H01M2/16 ,  H01M10/0569 ,  H01G11/62 ,  H01M10/0525 ,  H01G11/50 ,  H01G11/28

    CPC classification number: H01M2/1673 ,  H01G11/28 ,  H01G11/50 ,  H01G11/52 ,  H01M2/1626 ,  H01M2/18 ,  H01M10/0525 ,  H01M10/0566 ,  Y02E60/13 ,  Y02T10/7011 ,  Y02T10/7022

    Abstract: When cellulose is used as a separator, the cellulose is impregnated with an ionic liquid. Charge and discharge are repeated with this separator touching a surface of a current collector; then, the separator is changed in color. Thus, it is an object to provide a power storage device with a structure in which a side reaction other than a battery reaction, e.g., a change in color of separator, is unlikely to occur. In the power storage device, a separator impregnated with an ionic liquid is not in contact with a surface of a current collector. The separator has a tubular shape, a bag-like shape, or a sheet-like shape. The separator includes cellulose. The power storage device including the ionic liquid is non-volatile and non-flammable. The power storage device can be bent.

    Abstract translation: 当纤维素用作隔膜时，用离子液体浸渍纤维素。 用分离器接触集电器的表面重复充电和放电; 那么分离器的颜色就会改变。 因此，本发明的目的是提供一种电池存储装置，其具有除电池反应以外的副反应（例如隔膜的颜色变化）不可能发生的结构。 在蓄电装置中，浸渍有离子液体的隔膜不与集电体的表面接触。 隔膜具有管状，袋状或片状。 分离器包括纤维素。 包括离子液体的蓄电装置是非挥发性和不易燃的。 蓄电装置可弯曲。

    POSITIVE ELECTRODE ACTIVE MATERIAL AND SECONDARY BATTERY
    22.
    发明申请
    POSITIVE ELECTRODE ACTIVE MATERIAL AND SECONDARY BATTERY 有权

    公开(公告)号：US20250158054A1

    公开(公告)日：2025-05-15

    申请号：US19023705

    申请日：2025-01-16

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Jyo SAITO ,  Mayumi MIKAMI ,  Yohei MOMMA ,  Teruaki OCHIAI ,  Tatsuyoshi TAKAHASHI ,  Kazuhei NARITA

    IPC: H01M4/525 ,  H01M4/02 ,  H01M4/36 ,  H01M10/0525 ,  H01M10/0569

    Abstract: A positive electrode active material that has high capacity and excellent charge and discharge cycle performance for a secondary battery is provided. A positive electrode active material that inhibits a decrease in capacity in charge and discharge cycles is provided. A high-capacity secondary battery is provided. A secondary battery with excellent charge and discharge characteristics is provided. A highly safe or reliable secondary battery is provided. A positive electrode active material contains lithium, cobalt, oxygen, and aluminum and has a crystal structure belonging to a space group R-3m when Rietveld analysis is performed on a pattern obtained by powder X-ray diffraction. In analysis by X-ray photoelectron spectroscopy, the number of aluminum atoms is less than or equal to 0.2 times the number of cobalt atoms.

    SECONDARY BATTERY, ELECTRONIC DEVICE, VEHICLE, AND METHOD FOR MANUFACTURING SECONDARY BATTERY
    24.
    发明申请
    SECONDARY BATTERY, ELECTRONIC DEVICE, VEHICLE, AND METHOD FOR MANUFACTURING SECONDARY BATTERY 有权

    公开(公告)号：US20230135556A1

    公开(公告)日：2023-05-04

    申请号：US17906450

    申请日：2021-03-17

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Kazuhei NARITA ,  Yohei MOMMA ,  Shunpei YAMAZAKI

    IPC: H01M4/36 ,  H01M4/485

    Abstract: A method for manufacturing a positive electrode active material with high charge and discharge capacity is provided. Alternatively, a method for manufacturing a positive electrode active material with high charge and discharge voltage is provided. Alternatively, a method for manufacturing a power storage device with little deterioration is provided. Alternatively, a method for manufacturing a highly safe power storage device is provided. Alternatively, a method for manufacturing a novel power storage device is provided. A method for manufacturing a secondary battery including a positive electrode active material is provided. A method for manufacturing the positive electrode active material includes a first step of synthesizing a first lithium source and a first transition metal source to form a first composite oxide; a second step of synthesizing an impurity source to provide an impurity layer for the first composite oxide after the first step; and a third step of synthesizing a second lithium source and a second transition metal source to form a second composite oxide after the second step and providing the second composite oxide over the first composite oxide provided with the impurity layer.

    POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE, SECONDARY BATTERY, AND MANUFACTURING METHOD THEREOF
    25.
    发明申请
    POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE, SECONDARY BATTERY, AND MANUFACTURING METHOD THEREOF 有权

    公开(公告)号：US20220371906A1

    公开(公告)日：2022-11-24

    申请号：US17621792

    申请日：2020-06-16

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Kazuhei NARITA ,  Jo SAITO ,  Yohei MOMMA ,  Teruaki OCHIAI ,  Mayumi MIKAMI

    IPC: C01D15/02 ,  H01M10/0525 ,  H01M4/40 ,  C01G51/00 ,  C01G53/00 ,  C01F7/162 ,  C01F7/78

    Abstract: A positive electrode active material that has high capacity and excellent charge and discharge cycle performance for a secondary battery is provided. The positive electrode active material includes a group of particles including a first group of particles and a second group of particles. The group of particles includes lithium, cobalt, nickel, aluminum, magnesium, oxygen, and fluorine. When the number of cobalt atoms included in the group of particles is taken as 100, the number of nickel atoms is greater than or equal to 0.05 and less than or equal to 2, the number of aluminum atoms is greater than or equal to 0.05 and less than or equal to 2, and the number of magnesium atoms is greater than or equal to 0.1 and less than or equal to 6. When particle size distribution in the group of particles is measured by a laser diffraction and scattering method, the first group of particles has a first peak and the second group of particles has a second peak; the first peak has a local maximum value at longer than or equal to 2 μm and shorter than or equal to 4 μm, and the second peak has a local maximum value at longer than or equal to 9 μm and shorter than or equal to 25 μm.

    POSITIVE ELECTRODE ACTIVE MATERIAL AND SECONDARY BATTERY
    26.
    发明申请
    POSITIVE ELECTRODE ACTIVE MATERIAL AND SECONDARY BATTERY 有权

    公开(公告)号：US20220190319A1

    公开(公告)日：2022-06-16

    申请号：US17438645

    申请日：2020-03-19

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Kazuhei NARITA ,  Mayumi MIKAMI ,  Yohei MOMMA ,  Teruaki OCHIAI ,  Jo SAITO

    IPC: H01M4/36 ,  H01M4/525 ,  H01M10/0525

    Abstract: A positive electrode active material for a lithium-ion secondary battery and with high capacity and excellent charging and discharging cycle performance is provided. The positive electrode active material contains lithium, cobalt, nickel, aluminum, and oxygen, and the spin density attributed to one or more of a divalent nickel ion, a trivalent nickel ion, a divalent cobalt ion, and a tetravalent cobalt ion is within a predetermined range. It is preferable that the positive electrode active material further contain magnesium. An appropriate magnesium concentration is represented by a concentration with respect to cobalt. It is preferable that the positive electrode active material further contain fluorine.

    SECONDARY BATTERY AND METHOD FOR MANUFACTURING SECONDARY BATTERY
    27.
    发明申请
    SECONDARY BATTERY AND METHOD FOR MANUFACTURING SECONDARY BATTERY 有权

    公开(公告)号：US20210184214A1

    公开(公告)日：2021-06-17

    申请号：US16761504

    申请日：2018-11-16

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Mayumi MIKAMI ,  Yohei MOMMA ,  Kazutaka KURIKI ,  Kazuhei NARITA

    IPC: H01M4/58 ,  H01M10/0562 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/587

    Abstract: A conduction path in an all-solid-state secondary battery is difficult to keep with a volume change in an active material due to charging and discharging in some cases.
    A positive electrode active material with a small volume change between the charged state and the discharged state is used for an all-solid-state secondary battery. For example, a positive electrode active material that has a layered rock-salt crystal structure in the discharged state and a crystal structure similar to the cadmium chloride type crystal structure in the charged state with a depth of charge of approximately 0.8 changes less in its volume and crystal structure between charging and discharging than known positive electrode active materials.

    BATTERY MODULE, METHOD FOR MANUFACTURING BATTERY MODULE, AND ELECTRONIC DEVICE
    28.
    发明申请
    BATTERY MODULE, METHOD FOR MANUFACTURING BATTERY MODULE, AND ELECTRONIC DEVICE 有权

    公开(公告)号：US20210175573A1

    公开(公告)日：2021-06-10

    申请号：US17179979

    申请日：2021-02-19

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Ryota TAJIMA ,  Kazuhei NARITA ,  Kensuke YOSHIZUMI

    IPC: H01M50/209 ,  H01M50/543 ,  H01M50/50 ,  H01M50/116 ,  H01M50/531

    Abstract: A battery module with high impact resistance is provided. A battery module using an elastic body such as rubber for its exterior body covering a battery is provided. A bendable battery module is provided. As the exterior body covering a battery, an elastic body such as rubber is used, and the exterior body is molded in two steps. First, a first portion provided with a depression in which a battery is stored is molded using a first mold. Next, a battery is inserted into the first portion. Subsequently, second molding is performed using a second mold so as to fill an opening of the depression in the first portion, so that a second portion is formed. The second portion serves as a cover for closing the opening of the depression in the first portion. The second portion is formed in contact with part of the electrodes in the battery and part of an end portion of the second exterior body in the battery.

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