公开(公告)号：US20220059835A1

公开(公告)日：2022-02-24

申请号：US17417231

申请日：2019-12-06

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Daisuke Katou ,  Tomoo Takayama ,  Takuya Jin ,  Mitsuru Iwai

IPC: H01M4/525 ,  H01M10/0525 ,  B28B11/24 ,  C01G53/00

Abstract: A method for producing a lithium-containing composite oxide, the method including: a first step of preparing a lithium hydroxide; a second step of heating a hydroxide containing nickel and a metal M1 other than lithium and nickel to 300° C. or higher and 800° C. or lower, to obtain a composite oxide containing the nickel and the metal M; a third step of mixing the lithium hydroxide and the composite oxide, to obtain a mixture; a fourth step of compression-molding the mixture, to obtain a molded body; and a fifth step of baking the molded body at 600° C. or higher and 850° C. or lower, to obtain a baked body.

公开(公告)号：US20230187629A1

公开(公告)日：2023-06-15

申请号：US17926448

申请日：2021-04-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tomoo Takayama ,  Takaya Tochio ,  Katsuya Inoue ,  Takeshi Ogasawara

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/36 ,  H01M4/505

CPC classification number: H01M4/525 ,  C01G53/66 ,  H01M4/366 ,  H01M4/505 ,  C01P2006/40 ,  C01P2002/52 ,  C01P2004/50 ,  C01P2004/84 ,  C01P2002/74 ,  H01M2004/028

Abstract: This positive electrode material comprises a lithium transition metal complex oxide which contains at least 80 mol % Ni in terms of the total mol number of metal elements excluding Li, and which has a total Co content of less than 5 mol %. The lithium transition metal complex oxide is formed as secondary particles obtained by aggregating primary particles, wherein at least one element A selected from Ca and Sr is present on the surface of the primary particles in the amount of 0.01-1 mol %, inclusive, in terms of the total mol number of the metal elements excluding Li. In addition, at least one element B selected from B, Zr, W, Al, Nb, Mo, and Ti is present on the surface of the secondary particles in the amount of 0.05-2 mol %, inclusive, in terms of the total mol number of the Ni in the complex oxide.

公开(公告)号：US20220396497A1

公开(公告)日：2022-12-15

申请号：US17773385

申请日：2020-10-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Mitsuru Iwai ,  Daisuke Katou ,  Takuya Jin ,  Tomoo Takayama

IPC: C01G53/00 ,  H01M10/0525

Abstract: A method for producing a lithium-transition metal composite oxide includes steps of preparing a first mixture including a lithium-containing compound and a transition metal compound, obtaining a compressed body by compressing the first mixture at least once, obtaining a molded body by molding at least the compressed body, and obtaining a sintered body by sintering the molded body.

公开(公告)号：US20230339774A1

公开(公告)日：2023-10-26

申请号：US17763288

申请日：2020-07-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Mitsuru Iwai ,  Takuya Jin ,  Daisuke Katou ,  Tomoo Takayama

IPC: C01G53/00

CPC classification number: C01G53/42

Abstract: A method for producing a lithium-nickel composite oxide includes a step of sintering molded bodies of a mixture including a lithium-containing compound and a nickel-containing compound, in a container, to obtain sintered bodies. The ratio of space occupied by gaps between the molded bodies is 0.375 or greater.

公开(公告)号：US20230057410A1

公开(公告)日：2023-02-23

申请号：US17794763

申请日：2021-01-21

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD..

Inventor： Daisuke Katou ,  Takuya Jin ,  Mitsuru Iwai ,  Tomoo Takayama

IPC: H01M4/525 ,  C01G53/00

Abstract: A method for producing a lithium-transition metal composite oxide, including steps of: preparing a mixture including a lithium-containing compound and a transition metal compound; obtaining a molded body of the mixture; and sintering the molded bodies in a container having at least one vent hole, to obtain sintered bodies.