公开(公告)号：US11955630B2

公开(公告)日：2024-04-09

申请号：US17165953

申请日：2021-02-03

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takanori Omae ,  Ryuichi Natsui ,  Issei Ikeuchi ,  Kensuke Nakura

IPC: H01M4/505 ,  C01G45/12 ,  H01M4/02 ,  H01M10/0525

CPC classification number: H01M4/505 ,  C01G45/1228 ,  H01M10/0525 ,  H01M2004/028

Abstract: A positive electrode active material according to the present disclosure includes: a lithium composite oxide which includes Mn and at least one selected from the group consisting of F, Cl, and N, and S. The lithium composite oxide has a crystalline structure which belongs to the space group Fd-3m, and a relationship 1.40≤intensity ratio IMn1/IMn2≤1.90 is satisfied. The intensity ratio IMn1/IMn2 is a ratio of an intensity IMn1 to an intensity IMn2. The intensity IMn1 and the intensity IMn2 are intensities of a first proximity peak and a second proximity peak, respectively, of the Mn in a radial distribution function of the Mn included in the lithium composite oxide.

公开(公告)号：US11545657B2

公开(公告)日：2023-01-03

申请号：US16820643

申请日：2020-03-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takanori Omae ,  Ryuichi Natsui ,  Yu Otsuka ,  Shuhei Uchida

IPC: H01M4/131 ,  H01M4/505 ,  H01M10/0562 ,  H01M10/052 ,  H01M4/525 ,  H01M4/36

Abstract: A cathode active material includes a lithium composite oxide having a crystal structure which belongs to a layered structure. The lithium composite oxide has a BET specific surface area of not less than 5 m2/g and not more than 10 m2/g. The lithium composite oxide has an average particle size of not less than 3 μm and not more than 30 μm. The lithium composite oxide, an average crystallite size calculated by an X-ray diffraction method is not less than 150 Å and not more than 350 Å.

公开(公告)号：US20230096005A1

公开(公告)日：2023-03-30

申请号：US17801191

申请日：2021-02-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takanori Omae ,  Ryuichi Natsui ,  Mitsuhiro Hibino ,  Kensuke Nakura

IPC: H01M4/525 ,  H01M4/485 ,  H01M4/505 ,  H01M10/0525

Abstract: This positive electrode active material for nonaqueous electrolyte secondary batteries contains a lithium transition metal composite oxide. This lithium transition metal composite oxide is represented by general formula LixMnyNizMe2-x-y-zOaFb (wherein 1≤x≤1.2; 0.4≤y≤0.7; 0.1≤z≤0.4; 0

公开(公告)号：US11233237B2

公开(公告)日：2022-01-25

申请号：US16687703

申请日：2019-11-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takanori Omae ,  Ryuichi Natsui ,  Takayuki Ishikawa ,  Kensuke Nakura

IPC: H01M4/505 ,  C01B11/24 ,  H01M10/0525 ,  H01B1/08 ,  H01M4/02

Abstract: A positive electrode active material contains a lithium composite oxide containing fluorine and oxygen. The lithium composite oxide satisfies 1