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    LITHIUM-SULFUR SECONDARY BATTERY
    3.
    发明申请
    LITHIUM-SULFUR SECONDARY BATTERY 有权

    公开(公告)号：US20210328209A1

    公开(公告)日：2021-10-21

    申请号：US17265346

    申请日：2019-11-18

    Applicant: LG CHEM, LTD.

    Inventor： Changhoon LEE ,  Doo Kyung YANG ,  Intae PARK

    IPC: H01M4/36 ,  H01M10/056 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M10/0525

    Abstract: A lithium-sulfur secondary battery is disclosed, and in particular, a lithium-sulfur secondary battery in which a positive electrode includes a sulfur-carbon composite including a microporous carbon material and sulfur, or a conductive additive including a carbon material having high specific surface area. By specifying conditions of the positive electrode and an electrolyte liquid, energy density may be enhanced compared to existing lithium-sulfur secondary batteries.

    LITHIUM-SULFUR BATTERY
    4.
    发明申请
    LITHIUM-SULFUR BATTERY 有权

    公开(公告)号：US20210143510A1

    公开(公告)日：2021-05-13

    申请号：US16624750

    申请日：2018-05-04

    Applicant: LG CHEM, LTD.

    Inventor： Kihyun KIM ,  Soohyun KIM ,  Doo Kyung YANG ,  Sun Mi JIN ,  Changhoon LEE

    IPC: H01M50/446 ,  H01M10/052 ,  H01M10/058 ,  H01M50/403 ,  H01M50/46

    Abstract: A lithium-sulfur battery comprising a separator in which an adsorption layer including a radical compound having a nitroxyl radical site is formed, and in particular, to a lithium-sulfur battery suppressing elution of lithium polysulfide by using an adsorption layer including a radical compound having a nitroxyl radical site and optionally a conductive material on at least one surface of a separator. In the lithium-sulfur battery, elution and diffusion may be prevented by a radical compound having a nitroxyl radical site, a stable radical compound, adsorbing lithium polysulfide eluted from positive electrode, and in addition thereto, electrical conductivity is further provided to provide a reaction site of a positive electrode active material, and as a result, battery capacity and lifetime properties are enhanced.

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