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    SECONDARY BATTERY, METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL, PORTABLE INFORMATION TERMINAL, AND VEHICLE
    21.
    发明申请
    SECONDARY BATTERY, METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL, PORTABLE INFORMATION TERMINAL, AND VEHICLE 有权

    公开(公告)号：US20230052499A1

    公开(公告)日：2023-02-16

    申请号：US17778538

    申请日：2020-11-16

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Yoshihiro KOMATSU ,  Shiori SAGA ,  Yohei MOMMA ,  Hiroshi KADOMA ,  Toshikazu OHNO ,  Shunpei YAMAZAKI

    IPC: H01M4/525 ,  H01M4/04 ,  C01G53/00

    Abstract: Secondary batteries using lithium cobalt oxide as positive electrode active materials have a problem of a decrease in battery capacity due to repeated charging/discharging, for example. A positive electrode active material particle which hardly deteriorates is provided. In a first step, a container in which a lithium oxide and a fluoride are set is placed in a heating furnace, and in a second step, the inside of the heating furnace is heated in an atmosphere containing oxygen. The heating temperature of the second step is from 750° C. to 950° C., inclusive. By the manufacturing method, fluorine can be contained in the positive electrode active material particle to increase the wettability of the surface of the positive electrode active material so that the surface of the positive electrode active material is homogenized and planarized. The crystal structure of the thus manufactured positive electrode active material is unlikely to be broken in repeated high-voltage charging/discharging. Thus, secondary batteries using the positive electrode active material having such a feature have greatly improved cycle characteristics.

    ORGANIC COMPOUND, LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE
    27.
    发明申请
    ORGANIC COMPOUND, LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE 审中-公开

    公开(公告)号：US20200028095A1

    公开(公告)日：2020-01-23

    申请号：US16483304

    申请日：2018-01-26

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Hiroshi KADOMA ,  Hiroki SUZUKI ,  Yusuke TAKITA ,  Tsunenori SUZUKI ,  Satoshi SEO

    IPC: H01L51/00 ,  C07D209/86 ,  C09K11/06

    Abstract: A novel organic compound is provided. That is, a novel organic compound that is effective in improving element characteristics and reliability is provided.The organic compound includes an anthracene skeleton and a carbazole skeleton, and is represented by the following general formula (G1). (In the formula, Ar represents a substituted or unsubstituted arylene group having 6 to 13 carbon atoms, and when the arylene group has substituents, the substituents may be bonded to each other to form a ring. Furthermore, Cz represents a substituted or unsubstituted carbazole skeleton. Furthermore, each of R1 to R9 and R11 to R17 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms. Furthermore, at least one of the following pairs may form a fused ring: R12 and R13; R14 and R15; R15 and R16; or R16 and R17.

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