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：US20220293997A1

公开(公告)日：2022-09-15

申请号：US17654728

申请日：2022-03-14

Applicant: KOREA BASIC SCIENCE INSTITUTE

Inventor： Hae Jin KIM ,  Won Gi HONG ,  Jong Pil KIM ,  In Jun JEON

IPC: H01M10/04 ,  H01M10/0525

Abstract: The disclosure relates to an all-solid-state lithium secondary battery, comprising a first electrode having a first active material formed on a side; a second electrode having a side facing the first active material and having a second active material formed on both sides; and a third electrode having a side facing the other side of the second electrode and having a third active material formed on a side or both sides, wherein a capacity ratio of a positive electrode to a negative electrode (N/P ratio) of each active material formed on adjacent current collectors is 1.0 to 1.2.

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.

公开(公告)号：US20220294013A1

公开(公告)日：2022-09-15

申请号：US17654358

申请日：2022-03-10

Applicant: KOREA BASIC SCIENCE INSTITUTE

Inventor： Hae Jin KIM ,  Won Gi HONG ,  Jong Pil KIM ,  In Jun JEON

IPC: H01M10/0565 ,  H01M10/0525 ,  H01M10/058 ,  H01M4/131 ,  H01M4/133

Abstract: The disclosure relates a to manufacturing method of an all-solid-state lithium secondary battery including a solid polymer electrolyte, including preparing an all-solid-state lithium secondary battery by interposing a polymer electrolyte between a cathode and an anode; hardening the polymer electrolyte by applying a pressure and heat to the all-solid-state lithium secondary battery; activating the all-solid-state lithium secondary battery by applying a current; and removing a gas generated in the activated all-solid-state lithium secondary battery. By hardening a polymer electrolyte interposed between a cathode and an anode through applying a pressure and heat, a bubble or dead area inside solid polymer electrolyte is minimized with providing an electrode having uniform thickness. By repeating activation operation and removing gas, bonding of electrode stack is more enhanced, and stability of a battery is improved.

公开(公告)号：US20200262707A1

公开(公告)日：2020-08-20

申请号：US16714323

申请日：2020-02-26

Applicant: KOREA BASIC SCIENCE INSTITUTE

Inventor： Min Young SONG ,  Hae Jin KIM ,  Jin Bae LEE ,  Sang Moon LEE ,  Won Gi HONG

IPC: C01B32/174 ,  H01M4/58 ,  H01M10/0525 ,  C01B33/18

Abstract: The present specification discloses a method for producing a hybrid structure which includes a first step of preparing a mesoporous silica mold; a second step of uniformly mixing and heating a metal chelate compound and the mold to obtain a precursor of the hybrid structure; and a third step of obtaining a hybrid structure by etching the precursor under acid conditions, and wherein the metal chelate compound includes one or more carbon atoms, one or more nitrogen atoms, and one or more metal atoms.

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.