公开(公告)号：US20150243990A1

公开(公告)日：2015-08-27

申请号：US14528639

申请日：2014-10-30

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Yoon CHUNG ,  Won Young CHANG ,  Byung Won CHO ,  Ali GHULAM ,  Ji-Young KIM

IPC: H01M4/583 ,  H01M10/054 ,  H01M4/36

CPC classification number: H01M10/054 ,  H01M4/136 ,  H01M4/36 ,  H01M4/5825 ,  H01M4/625 ,  H01M2004/028 ,  H01M2220/20

Abstract: A cathode active material for a sodium secondary battery is provided. The cathode active material includes a FeF2.5(0.5H2O)-conductive carbon material composite and is prepared by low-temperature non-aqueous precipitation. The FeF2.5(0.5H2O)-conductive carbon material composite has high capacity and excellent cycle characteristics. In addition, the FeF2.5(0.5H2O)-conductive carbon material composite is prepared in an easy and economical manner by low-temperature non-aqueous precipitation. Therefore, the use of the FeF2.5(0.5H2O)-conductive carbon material composite ensures improved performance of the cathode active material. Further provided are a method for preparing the cathode active material and a sodium secondary battery employing the cathode active material.

Abstract translation: 提供了一种用于钠二次电池的阴极活性材料。 正极活性材料包括FeF2.5（0.5H2O）导电碳材料复合材料，并通过低温非水沉淀法制备。 FeF2.5（0.5H2O）导电碳材料复合材料具有高容量和优异的循环特性。 此外，FeF2.5（0.5H2O）导电碳材料复合材料通过低温非水性沉淀以简单经济的方式制备。 因此，使用FeF2.5（0.5H2O）导电碳材料复合物可确保改善阴极活性材料的性能。 还提供了制备阴极活性材料的方法和采用正极活性材料的钠二次电池。

公开(公告)号：US20140097094A1

公开(公告)日：2014-04-10

申请号：US13670869

申请日：2012-11-07

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hwa Young LEE ,  Byung Won CHO ,  Joong Kee LEE

IPC: C25C1/08

CPC classification number: C25C1/08 ,  C23C18/1617 ,  C23C18/32

Abstract: A recovery method of nickel according to the present invention comprises pretreatment step to prepare a solution for electrolysis by adding hexanesulfonate salt to a treatment solution including nickel, and nickel recovery step to recover nickel in a metal form by electrolysis of the above solution for electrolysis. The present invention can produce nickel in high purity with simple process with low cost, and can recover and reproduce nickel in a metal form with at least 99.5% of high purity and at least 90% of recovery rate.

Abstract translation: 根据本发明的镍的回收方法包括预处理步骤，通过向包含镍的处理溶液中加入己磺酸盐来制备电解溶液，以及镍回收步骤，通过电解上述电解溶液来回收金属形式的镍。 本发明可以以低成本的简单工艺生产高纯度的镍，并且可以以至少99.5％的高纯度和至少90％的回收率回收和再现金属形式的镍。

公开(公告)号：US20140057175A1

公开(公告)日：2014-02-27

申请号：US13742108

申请日：2013-01-15

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Yoon CHUNG ,  Byung Won CHO ,  Won Young CHANG ,  Jae Hyung CHO ,  Jae-kyo NOH ,  Soo KIM ,  Sujin KIM

IPC: H01M4/505 ,  H01M4/36

CPC classification number: H01M4/505 ,  C01G45/125 ,  C01G53/50 ,  C01P2004/04 ,  C01P2004/64 ,  C01P2004/84 ,  H01M4/366 ,  H01M4/525

Abstract: Provided is a cathode active material for a lithium secondary battery and a method for preparing the same. The cathode active material for a lithium secondary battery allows a lithium secondary battery to realize high capacity and to maintain maximum capacity even at high voltage, prevents a drop in capacity during repeated charge/discharge cycles, and improves the lifespan of a lithium secondary battery.

Abstract translation: 本发明提供一种锂二次电池用正极活性物质及其制备方法。 用于锂二次电池的阴极活性材料允许锂二次电池实现高容量并且即使在高电压下也能保持最大容量，防止重复充电/放电循环期间的容量下降，并且提高锂二次电池的寿命。

公开(公告)号：US20130136996A1

公开(公告)日：2013-05-30

申请号：US13681560

申请日：2012-11-20

Applicant: Korea Institute of Science and Technology

Inventor： Joong Kee LEE ,  Byung Won CHO ,  Hwa Young LEE ,  Byoung Sung AHN ,  Joo Man WOO ,  Sang Ok KIM ,  Ji Hun PARK ,  Jung Sub KIM ,  Nguyen Si HIEU

IPC: H01M4/38 ,  H01M4/04 ,  H01M4/583

CPC classification number: H01M4/386 ,  B82Y30/00 ,  H01M4/04 ,  H01M4/0428 ,  H01M4/049 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/405 ,  H01M4/583

Abstract: Disclosed are a metallic nano-structure material in which an energy storage capacity based on electrochemical reaction with lithium is improved by 10 times or more compared to a conventional graphite material and power characteristics are excellent, an electrode composed of the metallic nano-structure material, and a lithium ion asymmetric secondary battery including the electrode as an anode. When using the electrode for the lithium ion asymmetric secondary battery, energy larger than with the graphite material can be stored with very thin thickness due to the high-capacity feature of the metallic material and the high-power feature can be achieved by the nano structure, such that energy density can be innovatively improved in the same weight condition when compared to a conventional lithium ion capacitor, and the lithium ion asymmetric secondary battery including the electrode can be used for renewable energy storage, ubiquitous power supply, heavy machinery, vehicle power source, etc.

Abstract translation: 公开了一种金属纳米结构材料，其中与常规石墨材料相比，基于与锂的电化学反应的能量存储容量提高10倍以上，功率特性优异，由金属纳米结构材料构成的电极， 以及包含该电极作为阳极的锂离子不对称二次电池。 当使用电极作为锂离子不对称二次电池时，由于金属材料的高容量特性，能够比石墨材料大的能量可以非常薄的厚度储存，并且可通过纳米结构实现高功率特征 与以往的锂离子电容器相比，能够在与重量相同的条件下进行能量密度的创新改善，并且包含电极的锂离子不对称二次电池可用于可再生能源储存，普遍存在的电力供应，重型机械，车辆动力 来源等