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    Electrolyte for magnesium rechargeable battery and preparation method thereof
    3.
    发明授权
    Electrolyte for magnesium rechargeable battery and preparation method thereof 有权
    镁可充电电池用电解液及其制备方法

    公开(公告)号：US09543616B2

    公开(公告)日：2017-01-10

    申请号：US14633807

    申请日：2015-02-27

    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

    Inventor： Si Hyoung Oh ,  Byung Won Cho ,  Kyung Yoon Chung ,  Joong Kee Lee ,  Won Young Chang ,  Jae Hyun Cho ,  Junghoon Ha

    IPC: H01M10/54 ,  H01M10/0567 ,  H01M10/054 ,  H01M10/0568 ,  H01M10/0569

    CPC classification number: H01M10/0567 ,  H01M10/054 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/0025

    Abstract: Disclosed is an electrolyte solution for a magnesium rechargeable battery with a high ionic conductivity and a wide electrochemical window compared to the conventional electrolyte solution. The electrolyte solution is prepared by dissolving magnesium metal into the ethereal solution using combinations of metal chloride catalysts. The electrolyte solution can be applied to fabricate magnesium rechargeable batteries and magnesium hybrid batteries with a markedly increased reversible capacity, rate capability, and cycle life compared to those batteries employing the conventional electrolyte solution. Also disclosed is a method for preparing the electrolyte.

    Abstract translation: 公开了与常规电解质溶液相比，具有高离子电导率和宽电化学窗口的镁可充电电池的电解液。 通过使用金属氯化物催化剂的组合将镁金属溶解在醚溶液中来制备电解质溶液。 与使用常规电解质溶液的电池相比，电解质溶液可用于制造镁可充电电池和镁混合电池，其具有显着增加的可逆容量，速率能力和循环寿命。 还公开了一种制备电解质的方法。

    Electrolyte for magnesium secondary battery and preparation method thereof
    7.
    发明授权
    Electrolyte for magnesium secondary battery and preparation method thereof 有权
    镁二次电池用电解液及其制备方法

    公开(公告)号：US09203114B2

    公开(公告)日：2015-12-01

    申请号：US13870439

    申请日：2013-04-25

    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

    Inventor： Kyung Yoon Chung ,  Byung Won Cho ,  Joong Kee Lee ,  Jae Hyun Cho ,  Sang Hoon Lee ,  Won Young Chang

    IPC: H01M6/04 ,  H01M10/26 ,  H01M10/0567 ,  H01M10/054 ,  H01M10/0568

    CPC classification number: H01M10/0567 ,  H01M10/054 ,  H01M10/0568

    Abstract: Provided are an electrolyte for a magnesium secondary battery having improved ion conductivity and stability, and a method for preparing the same. The electrolyte for a magnesium secondary battery shows higher ion conductivity as compared to the electrolyte according to the related art, increases the dissociation degree of a magnesium halide electrolyte salt, and provides stable electrochemical characteristics. In addition, after determining the capacity, output characteristics and cycle life of the magnesium secondary battery including the electrolyte, the battery provides significantly higher discharge capacity after 100 cycles, as compared to the electrolyte according to the related art. Therefore, the electrolyte may be useful for an electrolyte solution of a magnesium secondary battery.

    Abstract translation: 提供一种具有改善的离子传导性和稳定性的用于镁二次电池的电解质及其制备方法。 与现有技术的电解液相比，镁二次电池用电解液的离子传导性高，卤化镁电解质盐的解离度提高，电化学性能稳定。 此外，在确定包括电解质的镁二次电池的容量，输出特性和循环寿命之后，与根据现有技术的电解液相比，电池在100次循环后提供显着更高的放电容量。 因此，电解质可用于镁二次电池的电解液。

    Separation method of zirconium and hafnium by solvent extraction process
    8.
    发明授权
    Separation method of zirconium and hafnium by solvent extraction process 失效
    通过溶剂萃取法分离锆和铪的方法

    公开(公告)号：US08778288B1

    公开(公告)日：2014-07-15

    申请号：US13852143

    申请日：2013-03-28

    Applicant: Korea Institute of Science and Technology ,  Posco M-Tech

    Inventor： Hwa Young Lee ,  Byung Won Cho ,  Joong Kee Lee

    IPC: B01D11/00

    CPC classification number: C22B3/0005 ,  Y02P10/234

    Abstract: A separation method of zirconium and hafnium is described which includes an extraction process of agitating an undiluted aqueous solution containing zirconium, hafnium, and sulfuric acid with a first stirring solution containing an acidic extractant to produce a first extract solution in which the hafnium is extracted by the acidic extractant; and a recovery process of agitating the first extract solution with a second stirring solution containing a citric acid solution to produce a citric acid solution after extraction in which zirconium is reverse-extracted from the first extract solution to the citric acid solution so as to recover zirconium contained in the first extract solution. The method may reduce the amount of extractant while greatly enhancing the separation effect of zirconium and hafnium, and increase zirconium recovery rate by more than 97% through an additional zirconium recovery process while reducing a hafnium content in zirconium by less than 50 ppm.

    Abstract translation: 描述了锆和铪的分离方法，其包括使用含有酸性萃取剂的第一搅拌溶液搅拌未稀释的含有锆，铪和硫酸的水溶液的提取方法，以产生其中铪被提取的第一提取溶液 酸性提取剂; 以及回收方法，用含有柠檬酸溶液的第二搅拌溶液搅拌第一提取溶液，以在提取后产生柠檬酸溶液，其中将锆从第一提取溶液反萃取至柠檬酸溶液，以回收锆 包含在第一提取物溶液中。 该方法可以减少萃取剂的量，同时大大提高锆和铪的分离效果，并且通过另外的锆回收方法将锆回收率提高97％以上，同时将锆中的铪含量降低到低于50ppm。

    Sodium vanadium oxide anode material for sodium ion secondary battery, preparation method thereof and sodium ion secondary battery having the same
    9.
    发明授权
    Sodium vanadium oxide anode material for sodium ion secondary battery, preparation method thereof and sodium ion secondary battery having the same 有权
    用于钠离子二次电池的钠钒氧化物阳极材料及其制备方法和具有其的钠离子二次电池

    公开(公告)号：US09166225B2

    公开(公告)日：2015-10-20

    申请号：US13966497

    申请日：2013-08-14

    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

    Inventor： Hyung Sun Kim ,  Byung Won Cho ,  Si Hyoung Oh ,  Ju Hyeon Ahn ,  Yong Ho Lee ,  Won Chang Choi

    IPC: H01M4/485 ,  C01D1/02 ,  H01M4/02 ,  C01G31/02 ,  H01M10/054

    CPC classification number: H01M4/485 ,  C01D1/02 ,  C01G31/02 ,  H01M10/054 ,  H01M2004/027 ,  Y02E60/122

    Abstract: There is provided a preparation method of a sodium vanadium oxide-based (Na1+xV1−xO2) anode material for a sodium ion secondary battery synthesized by mixing particles of precursors such as sodium carbonate (Na2CO3) and vanadium oxide (V2O3) and pyrolyzing a mixture in a mixed gas atmosphere composed of 90 mol % of nitrogen gas and 10 mol % of hydrogen gas through a solid-state reaction. The sodium vanadium oxide-based anode material prepared according to the present invention shows a small change in volume caused by an initial irreversible capacity and continuous charge/discharge reactions, and thus it is useful for providing a next-generation sodium ion secondary battery having stable charge/discharge characteristics and cycle performance.

    Abstract translation: 提供了通过混合前体如碳酸钠（Na 2 CO 3）和氧化钒（V 2 O 3）的颗粒合成的钠离子二次电池的钠钒氧化物（Na1 + xV1-xO2）阳极材料的制备方法，并将 通过固相反应在由90mol％的氮气和10mol％的氢气组成的混合气体气氛中进行混合。 根据本发明制备的基于氧化钒的阳极材料显示由初始不可逆容量和连续充放电反应引起的体积变化小，因此可用于提供具有稳定的下一代钠离子二次电池 充放电特性和循环性能。

    Nanocomposite cathode active material for lithium secondary batteries, method for preparing the same and lithium secondary batteries comprising the same
    10.
    发明授权
    Nanocomposite cathode active material for lithium secondary batteries, method for preparing the same and lithium secondary batteries comprising the same 有权
    锂二次电池用纳米复合正极活性物质及其制造方法以及锂二次电池

    公开(公告)号：US08889297B2

    公开(公告)日：2014-11-18

    申请号：US13738044

    申请日：2013-01-10

    Applicant: Korea Institute of Science and Technology

    Inventor： Kyung Yoon Chung ,  Dieky Susanto ,  Won Young Chang ,  Byung Won Cho

    IPC: H01M4/13 ,  H01M4/50

    CPC classification number: H01M4/505 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/364 ,  H01M10/052

    Abstract: The present disclosure relates to a nanocomposite cathode active material for a lithium secondary battery, a method for preparing same, and a lithium secondary battery including same. More particularly, the present disclosure relates to a nanocomposite cathode active material for a lithium secondary battery including: a core including LiMn2O4; and LiMn(PO3)3 distributed on the surface of the core. In accordance with the present disclosure, the time and cost for manufacturing a lithium secondary battery can be reduced and the manufactured lithium secondary battery has superior electrochemical properties.

    Abstract translation: 本发明涉及一种锂二次电池用纳米复合阴极活性物质及其制备方法，以及包含锂二次电池的锂二次电池。 更具体地，本公开涉及一种用于锂二次电池的纳米复合阴极活性材料，其包括：包含LiMn 2 O 4的核; 和分布在芯表面上的LiMn（PO3）3。 根据本公开，可以减少制造锂二次电池的时间和成本，并且制造的锂二次电池具有优异的电化学性能。

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