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.