中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

53 records (took 0.029 seconds)

    METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL
    2.
    发明公开
    METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL 审中-公开

    公开(公告)号：US20230331556A1

    公开(公告)日：2023-10-19

    申请号：US18043102

    申请日：2021-08-20

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Shunpei YAMAZAKI ,  Tetsuya KAKEHATA ,  Yumiko YONEDA ,  Kazutaka KURIKI

    IPC: C01B25/45

    CPC classification number: C01B25/45 ,  C01P2006/80 ,  C01P2006/40 ,  C01P2004/04 ,  C01P2002/70

    Abstract: A method for manufacturing a highly purified positive electrode active material is provided. Alternatively, a method for manufacturing a positive electrode active material whose crystal structure is not easily broken even when charge and discharge are repeated is provided. The method for manufacturing a positive electrode active material containing lithium and a transition metal includes a first step of preparing a lithium compound, a phosphorus compound, and water; a second step of forming a first mixture by mixing the lithium compound, the phosphorus compound, and the water; a third step of forming a second mixture by adding a first aqueous solution to the first mixture to adjust a pH; a fourth step of forming a third mixture by mixing an iron(II) compound with the second mixture; a fifth step of forming a fourth mixture by heating the third mixture; and a sixth step of obtaining a positive electrode active material by filtering, washing, and drying the fourth mixture. High-purity materials are used as the lithium compound, the phosphorus compound, the water, and the iron(II) compound.

    METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL, AND LITHIUM ION BATTERY
    5.
    发明申请
    METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL, AND LITHIUM ION BATTERY 审中-公开

    公开(公告)号：US20200303739A1

    公开(公告)日：2020-09-24

    申请号：US16893726

    申请日：2020-06-05

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Takuya MIWA ,  Yumiko YONEDA ,  Teppei OGUNI

    IPC: H01M4/58 ,  C01B25/45

    Abstract: A composite oxide with high diffusion rate of lithium is provided. Alternatively, a lithium-containing complex phosphate with high diffusion rate of lithium is provided. Alternatively, a positive electrode active material with high diffusion rate of lithium is provided. Alternatively, a lithium ion battery with high output is provided. Alternatively, a lithium ion battery that can be manufactured at low cost is provided. A positive electrode active material is formed through a first step of mixing a lithium compound, a phosphorus compound, and water, a second step of adjusting pH by adding a first aqueous solution to a first mixed solution formed in the first step, a third step of mixing an iron compound with a second mixed solution formed in the second step, a fourth step of performing heat treatment under a pressure more than or equal to 0.1 MPa and less than or equal to 2 MPa at a highest temperature more than 100° C. and less than or equal to 119 ° C. on a third mixed solution formed in the third step with a pH of more than or equal to 3.5 and less than or equal to 5.0.

    METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL, AND LITHIUM ION BATTERY
    6.
    发明申请
    METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL, AND LITHIUM ION BATTERY 审中-公开

    公开(公告)号：US20170338489A1

    公开(公告)日：2017-11-23

    申请号：US15586341

    申请日：2017-05-04

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Takuya MIWA ,  Yumiko YONEDA ,  Teppei OGUNI

    IPC: H01M4/58 ,  C01B25/45 ,  H01M10/0525 ,  H01M4/02

    CPC classification number: H01M4/5825 ,  C01B25/45 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/40 ,  H01M10/0525 ,  H01M2004/028

    Abstract: A composite oxide with high diffusion rate of lithium is provided. Alternatively, a lithium-containing complex phosphate with high diffusion rate of lithium is provided. Alternatively, a positive electrode active material with high diffusion rate of lithium is provided. Alternatively, a lithium ion battery with high output is provided. Alternatively, a lithium ion battery that can be manufactured at low cost is provided. A positive electrode active material is formed through a first step of mixing a lithium compound, a phosphorus compound, and water, a second step of adjusting pH by adding a first aqueous solution to a first mixed solution formed in the first step, a third step of mixing an iron compound with a second mixed solution formed in the second step, a fourth step of performing heat treatment under a pressure more than or equal to 0.1 MPa and less than or equal to 2 MPa at a highest temperature more than 100° C. and less than or equal to 119° C. on a third mixed solution formed in the third step with a pH of more than or equal to 3.5 and less than or equal to 5.0.

    ELECTRONIC DEVICE INCLUDING SECONDARY BATTERY
    9.
    发明申请
    ELECTRONIC DEVICE INCLUDING SECONDARY BATTERY 审中-公开
    包括二次电池的电子设备

    公开(公告)号：US20150340664A1

    公开(公告)日：2015-11-26

    申请号：US14717615

    申请日：2015-05-20

    Applicant: Semiconductor Energy Laboratory Co., LTD.

    Inventor： Minoru TAKAHASHI ,  Yuugo GOTO ,  Yumiko YONEDA ,  Takuya MIWA ,  Ryota TAJIMA

    IPC: H01M2/02

    CPC classification number: H01M2/0275 ,  H01M2/021 ,  H01M2/0287 ,  H01M2/30 ,  H01M10/0436 ,  H01M2220/30

    Abstract: In the case where a film, which has lower strength than a metal can, is used as an exterior body of a secondary battery, a current collector provided in a region surrounded by the exterior body, an active material layer provided on a surface of the current collector, or the like might be damaged when force is externally applied to the secondary battery. A secondary battery which is resistant to external force is obtained. An opening is provided in a central portion of the secondary battery, and a terminal is formed in the opening. An outer edge of the secondary battery is fixed by thermocompression bonding. In addition, the central portion of the secondary battery is fixed by thermocompression bonding, so that the amount of bending is limited even when the outer edge portion of the secondary battery is bent.

    Abstract translation: 在将具有比金属罐低的强度的膜用作二次电池的外部主体的情况下，设置在由外部主体包围的区域中的集电体，设置在外部主体的表面上的活性物质层 集电器等可能会在外部施加到二次电池上时损坏。 获得耐外力的二次电池。 在二次电池的中央部设置有开口，在开口部形成有端子。 通过热压接固定二次电池的外边缘。 此外，通过热压接固定二次电池的中心部分，使得即使当二次电池的外边缘部分弯曲时，弯曲量也受到限制。

Patent Agency Ranking