公开(公告)号：US20180175385A1

公开(公告)日：2018-06-21

申请号：US15818639

申请日：2017-11-20

Applicant: Korea Basic Science Institute

Inventor： Won Gi HONG ,  Hae Jin KIM ,  Jin Bae LEE ,  Sang Moon LEE ,  Yeon Ho KIM

IPC: H01M4/48 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/133 ,  H01M4/587 ,  C01G31/02 ,  C01B32/198

CPC classification number: H01M4/483 ,  C01B32/184 ,  C01B32/198 ,  C01G31/02 ,  C01P2004/16 ,  C01P2006/40 ,  H01M4/133 ,  H01M4/366 ,  H01M4/382 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0525 ,  H01M2220/20

Abstract: The present disclosure is directed to a graphene-vanadium oxide nanowire including a nanowire core including vanadium oxide and a shell formed on the surface of the nanowire core and including graphene oxide. The graphene-vanadium oxide nanowire having improved capacity stability can be provided by using the graphene-vanadium oxide nanowire according to the present disclosure, the method for preparing the same, and a positive active material and a secondary battery including the same. In addition, by using the graphene-vanadium oxide nanowire according to the present disclosure as a positive active material, it is possible to provide a secondary battery having improved cycle characteristics and capacity retention rates.

公开(公告)号：US20180175381A1

公开(公告)日：2018-06-21

申请号：US15818635

申请日：2017-11-20

Applicant: Korea Basic Science Institute

Inventor： Jin Bae LEE ,  Hae Jin KIM ,  Won Gi HONG ,  Sang Moon LEE ,  Yeon Ho KIM

IPC: H01M4/36 ,  H01M4/50

CPC classification number: H01M4/366 ,  C01G45/02 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2004/16 ,  C01P2004/64 ,  C01P2004/84 ,  H01M4/50 ,  H01M4/502 ,  H01M2004/021

Abstract: The present disclosure relates to manganese oxide nano-rods in the form of a core-shell, in which the manganese oxide nano-rods are formed in a core-shell structure, the core and the shell each include MnxOy, when x of MnxOy of the core is 1 and y is 2, x of MnxOy of the shell is 2 and y is 3, and when x of MnxOy of the core is 2 and y is 3, x of MnxOy of the shell is 1 and y is 2. According to the present disclosure, in the secondary battery using the manganese oxide, the elution of manganese is inhibited and the structural stability of an active material is increased, thereby increasing the capacity and the cycle life at a high temperature.

公开(公告)号：US20180170762A1

公开(公告)日：2018-06-21

申请号：US15818595

申请日：2017-11-20

Applicant: Korea Basic Science Institute

Inventor： Yeon Ho KIM ,  Hae Jin KIM ,  Jin Bae LEE ,  Won Gi HONG ,  Sang Moon LEE

IPC: C01B33/32 ,  H01M4/136 ,  H01M4/58

CPC classification number: C01B33/32 ,  C01P2004/34 ,  C01P2004/64 ,  H01M4/136 ,  H01M4/5825

Abstract: The present disclosure relates to a lithium-transition metal-silicate complex that is formed into a sphere with a hollow, in which a radius of the hollow is in a range of 0.5 to 3.0 nm, and a diameter of the lithium-transition metal-silicate complex is in a range of 5 to 10 nm. The present disclosure enables to facilitate the mass production of a complex including a lithium-transition metal-silicate complex, having a micro-sized hollow, and having a spherical shape.In addition, when using a lithium-transition metal-silicate complex of the present disclosure as a cathode active material for a lithium secondary battery, it is capable of providing a cathode active material for a lithium-ion battery excellent in charging and discharging characteristics as well as in high-rate characteristics.In addition, a lithium-transition metal-silicate complex manufactured according to the present disclosure may implement properties of materials of lithium, transition metal, and silicate as well as its structural characteristics, and thus, it can be effectively applied in various industrial fields.