公开(公告)号：US20240322224A1

公开(公告)日：2024-09-26

申请号：US18578141

申请日：2022-06-28

Applicant: OTSUKA CHEMICAL CO., LTD.

Inventor： Mizuki Ito ,  Hiroyoshi Mori

IPC: H01M10/0562 ,  H01M10/0525

CPC classification number: H01M10/0562 ,  H01M10/0525 ,  H01M2300/0071 ,  H01M2300/0094

Abstract: Provided is a titanic acid-based solid electrolyte material free from risk of production of hydrogen sulfide, free of rare earth, and having good electrochemical stability and lithium-ion conductivity. A titanic acid-based solid electrolyte material 1 is made of a titanate having a structure in which a plurality of host layers 2 are laid one on top of another, the host layer 2 being formed so that octahedra each formed of a titanium atom coordinated with six oxygen atoms are two-dimensionally chained while sharing ridges, and lithium ions 3 and divalent or higher-valent cations (α) 4 are intercalated in interlayers between the host layers 2, titanium sites in the host layers 2 being partially substituted by monovalent to trivalent cations (β).

公开(公告)号：US20240039039A1

公开(公告)日：2024-02-01

申请号：US18039854

申请日：2021-11-15

Applicant: OTSUKA CHEMICAL CO., LTD.

Inventor： Mizuki Ito ,  Hiroyoshi Mori

IPC: H01M10/0562 ,  H01M10/0525

CPC classification number: H01M10/0562 ,  H01M10/0525 ,  H01M2300/0074

Abstract: Provided is a titanic acid-based solid electrolyte material free from risk of production of hydrogen sulfide, free of rare earth, and having good lithium-ion conductivity. The titanic acid-based solid electrolyte material is made of a lepidocrocite titanate having a structure in which a plurality of host layers are laid one on top of another, the host layer being formed so that octahedra each formed of a titanium atom coordinated with six oxygen atoms are two-dimensionally chained while sharing ridges, and lithium ions are intercalated in interlayers between the host layers, and titanium sites in the host layers are partially substituted by cations with valences of +1 to +3.