公开(公告)号：US20180198150A1

公开(公告)日：2018-07-12

申请号：US15506419

申请日：2015-06-16

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Ho Sung Kim ,  Kyeong Joon Kim ,  Seung Woo CHOI ,  Min Young KIM ,  Yu Sin KIM

IPC: H01M8/1246 ,  C01G15/00

CPC classification number: H01M8/1246 ,  C01G15/006 ,  C01P2002/34 ,  C01P2002/50 ,  C01P2002/72 ,  C01P2002/88 ,  C01P2004/03 ,  C01P2004/50 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/40 ,  C01P2006/80 ,  H01M4/8857 ,  H01M4/8889 ,  H01M4/9033 ,  H01M4/9066 ,  H01M8/1213 ,  Y02E60/525 ,  Y02P70/56

Abstract: This invention relates to a single-phase perovskite-based solid electrolyte, a solid oxide fuel cell including the same, and a method of manufacturing the same. The method of the invention includes stirring and pulverizing a mixed oxide including lanthanum oxide (La2O3), strontium carbonate (SrCO3), gallium oxide (Ga2O3) and magnesium oxide (MgO); and obtaining an LSGM powder by subjecting the pulverized mixed oxide to primary calcination at a first temperature and then secondary calcination at a second temperature that is higher than the first temperature.

公开(公告)号：US20190273283A1

公开(公告)日：2019-09-05

申请号：US16348675

申请日：2017-10-27

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Ho Sung KIM ,  Min Young KIM ,  Seung Hoon YANG ,  Da Hye KIM ,  Hye Min RYU ,  Ha Young JUNG

IPC: H01M10/0562 ,  H01M10/058 ,  H01M10/052 ,  C01G25/02

Abstract: Disclosed is a method of preparing a solid electrolyte, the method including (a) preparing a solid electrolyte precursor by subjecting a mixed solution composed of a lanthanum precursor, a zirconium precursor, a gallium precursor, a complexing agent, and a pH adjuster to coprecipitation, (b) washing and drying the solid electrolyte precursor, (c) preparing a mixture by mixing the washed and dried solid electrolyte precursor with a lithium source, and (d) calcining the mixture to give a calcined solid electrolyte, which is a gallium (Ga)-doped lithium lanthanum zirconium oxide (LLZO), as represented by Chemical Formula 1. A solid electrolyte having increased ionic conductivity and an improved potential window can be provided using the method of preparing the solid electrolyte.

公开(公告)号：US20180309163A1

公开(公告)日：2018-10-25

申请号：US15888667

申请日：2018-02-05

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Ho Sung KIM ,  Min Young KIM ,  Seung Hoon YANG ,  Da Hye KIM ,  Ha Young JUNG ,  Hye Min RYU ,  Jin Sub LIM

IPC: H01M10/0525 ,  H01M10/04 ,  H01M10/0585 ,  H01M4/66 ,  H01M4/38 ,  H01M4/134 ,  H01M10/0562

CPC classification number: H01M10/0525 ,  H01M4/134 ,  H01M4/382 ,  H01M4/661 ,  H01M10/0418 ,  H01M10/044 ,  H01M10/0562 ,  H01M10/0585 ,  H01M2004/029 ,  H01M2220/20 ,  H01M2220/30

Abstract: Disclosed is a bipolar all solid-state battery, which can efficiently control a manufacturing process thereof and can improve electric properties thereof. In an exemplary embodiment, the bipolar all solid-state battery includes a unit cell including a first current collector having a first surface and a second surface opposite to the first surface; a first active material coated on the first surface of the first current collector, a second current collector having a first surface and a second surface opposite to the first surface; a second active material coated on the first surface of the second current collector and facing the first active material; and an all solid-state electrolyte formed between the first active material and the second active material. When a plurality of the unit cells are stacked, the first current collector and the second current collector are connected to each other through surface contact.

公开(公告)号：US20180198119A1

公开(公告)日：2018-07-12

申请号：US15506443

申请日：2015-06-18

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Ho Sung KIM ,  Byeong Su KANG ,  Sun Woo YANG ,  Min Young KIM ,  Chae Hwan JEONG

IPC: H01M4/1397 ,  C01B25/45 ,  H01M4/58 ,  H01M4/62 ,  H01M4/04 ,  H01M10/052 ,  B01J2/22

CPC classification number: H01M4/1397 ,  B01J2/22 ,  C01B25/45 ,  C01B25/451 ,  H01M4/0433 ,  H01M4/0471 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/58 ,  H01M4/5825 ,  H01M4/62 ,  H01M10/052 ,  H01M2004/028 ,  H01M2220/30

Abstract: Disclosed is a method of preparing a cathode electrode material for a secondary battery, including a hydrate precursor preparation step of preparing a manganese phosphate hydrate precursor using a coprecipitation process, a synthetic powder preparation step of preparing a synthetic powder by mixing the manganese phosphate hydrate precursor in a powder form with lithium phosphate and carbon, an oxide material powder preparation step of preparing a lithium manganese phosphate oxide material powder by milling and annealing the synthetic powder, a composite powder preparation step of preparing a composite powder by mixing the lithium manganese phosphate oxide material powder with a Li2MnO3-based cathode material, and a slurry preparation step of preparing a slurry by mixing the composite powder with a conductor and a binder.

公开(公告)号：US20190148771A1

公开(公告)日：2019-05-16

申请号：US16249687

申请日：2019-01-16

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Ho Sung KIM ,  Tae Won KIM ,  Duck Rye CHANG ,  Jong Ho LEE ,  Kyeong Wan KIM ,  Min Young KIM

IPC: H01M10/0562 ,  C04B35/64 ,  C04B35/626 ,  C04B35/50 ,  H01M10/0525 ,  C04B35/486

Abstract: The method for manufacturing a solid electrolyte using an LLZ material for a lithium-ion battery comprises the steps of: providing a starting material in which lanthanum nitrate [La(NO3)3.6H2O] and zirconium nitrate [ZrO(NO3)2.6H2O] are mixed at a mole ratio of 3:2; forming an aqueous solution by dissolving the starting material; forming a precipitate by putting ammonia, which is a complex agent, and sodium hydroxide, which adjusts the pH of a reactor, into the aqueous solution, mixing the same, and then co-precipitating the mixture; forming a primary precursor powder by cleaning, drying and pulverizing the precipitate; forming a secondary precursor powder by mixing lithium powder [LiOH.H2O] with the primary precursor powder and ball-milling the mixture so as to solidify the lithium; and forming a solid electrolyte powder by heat-treating the secondary precursor powder.