公开(公告)号：US20220216510A1

公开(公告)日：2022-07-07

申请号：US17703087

申请日：2022-03-24

Applicant: KANEKA CORPORATION

Inventor： Kazuaki Kanai ,  Genta Karino

IPC: H01M10/0562 ,  H01M10/0525

Abstract: An LLZ oxide may be a garnet-type oxide that contains Li, La, Zr and O as main constituent elements, and further contains substituent elements such as Zn in addition to the main constituent elements. The substituent elements may contain Bi, Nb, Hf and the like in addition to Zn. The LLZ-type oxide may be used, for example, as a solid electrolyte for an all-solid-state lithium ion secondary battery. The all-solid-state lithium ion secondary battery includes a positive electrode, a negative electrode, and a solid electrolyte layer that is disposed between the positive electrode and the negative electrode.

公开(公告)号：US20210179441A1

公开(公告)日：2021-06-17

申请号：US17184147

申请日：2021-02-24

Applicant: KANEKA CORPORATION ,  OSAKA UNIVERSITY

Inventor： Kazuaki Kanai ,  Shohei Kitano ,  Makio Naito

IPC: C01G25/02 ,  H01M10/0562

Abstract: The present disclosure is directed to a composite metal oxide particle, and method of producing the same, having an excellent lithium ion conductivity that may be produced at low cost. The present disclosure relates to a garnet-type composite metal oxide particle, containing Li, La, Zr and O; Ga and/or Al; and a halogen element, where a part of a Li site is substituted with the Ga and/or the Al, and at least a part of a particle surface is covered with a melt-solidified material. A ratio of an area covered with the melt-solidified material to a total area of the particle is preferably 10% or more, and the halogen element is preferably Cl.

公开(公告)号：US12084355B2

公开(公告)日：2024-09-10

申请号：US17184147

申请日：2021-02-24

Applicant: KANEKA CORPORATION ,  OSAKA UNIVERSITY

Inventor： Kazuaki Kanai ,  Shohei Kitano ,  Makio Naito

IPC: C01G25/00 ,  H01M10/0562

CPC classification number: C01G25/006 ,  H01M10/0562 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2002/85 ,  C01P2004/03 ,  C01P2004/04 ,  H01M2300/0071

Abstract: The present disclosure is directed to a composite metal oxide particle, and method of producing the same, having an excellent lithium ion conductivity that may be produced at low cost. The present disclosure relates to a garnet-type composite metal oxide particle, containing Li, La, Zr and O; Ga and/or Al; and a halogen element, where a part of a Li site is substituted with the Ga and/or the Al, and at least a part of a particle surface is covered with a melt-solidified material. A ratio of an area covered with the melt-solidified material to a total area of the particle is preferably 10% or more, and the halogen element is preferably Cl.

公开(公告)号：US20210202947A1

公开(公告)日：2021-07-01

申请号：US17192975

申请日：2021-03-05

Applicant: KANEKA CORPORATION ,  OSAKA UNIVERSITY

Inventor： Takashi Kikuchi ,  Kohei Ogawa ,  Kazuaki Kanai ,  Makio Naito ,  Takahiro Kozawa

IPC: H01M4/62 ,  H01M4/525 ,  H01M4/505 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/36 ,  C01G53/00

Abstract: A method for producing a positive electrode active material is provided. The method can prevent a gas generation due to an oxidative degradation of a non-aqueous electrolyte in a lithium-ion secondary battery using a positive electrode active material which operates at a high potential. A method for producing a coated positive electrode active material for a lithium-ion secondary battery includes coating a surface of a positive electrode active material with an oxide-based solid electrolyte by a mechanical coating method and then conducting heat treatment at 300° C. or higher, and the positive electrode active material has an average potential of extraction and insertion of lithium of 4.5V or more and 5.0V or less based on Li+/Li.