公开(公告)号：US20230335728A1

公开(公告)日：2023-10-19

申请号：US18028929

申请日：2021-09-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Jin Zhang ,  Issei Ikeuchi ,  Mitsuhiro Hibino ,  Kensuke Nakura

IPC: H01M4/505 ,  H01M4/1315 ,  C01G45/12

CPC classification number: H01M4/505 ,  H01M4/1315 ,  C01G45/1228 ,  C01P2006/40 ,  C01P2002/52 ,  C01P2002/76

Abstract: A positive electrode active material for a secondary battery includes a lithium metal composite oxide having a crystal structure based on a rock salt structure belonging to a space group Fm-3m, wherein the lithium metal composite oxide includes Ti and a metal element M1 other than Li and Ti. The metal element M1 preferably further includes at least one selected from the group consisting of Fe, Ge, Si, and Ga.

公开(公告)号：US20230094468A1

公开(公告)日：2023-03-30

申请号：US17799761

申请日：2021-01-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Jin Zhang ,  Issei Ikeuchi ,  Mitsuhiro Hibino ,  Kensuke Nakura

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/485 ,  H01M50/46 ,  H01M10/0525

Abstract: This positive electrode active material for a non-aqueous electrolyte secondary battery contains a lithium-transition metal composite oxide that has a rock salt-related structure and is represented by the compositional formula LiaMnbMcO2-xFx (in the formula: M is at least one metal element excluding Li and Mn; 2.000

公开(公告)号：US11271200B2

公开(公告)日：2022-03-08

申请号：US16558335

申请日：2019-09-03

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Ryuichi Natsui ,  Kensuke Nakura ,  Junko Matsushita ,  Issei Ikeuchi

IPC: H01M4/50 ,  H01M4/505 ,  C01G53/00 ,  H01M4/36 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/02

Abstract: A positive-electrode active material contains a lithium composite oxide, wherein the lithium composite oxide is a multiphase mixture including a first phase, of which a crystal structure belongs to a space group Fm-3m, and a second phase, of which a crystal structure belongs to a space group Fd-3m; and in an XRD pattern of the lithium composite oxide, the integrated intensity ratio I(18°-20°)/I(43°-46°) of a first maximum peak I(18°-20°) within a first range of 18 degrees to 20 degrees at a diffraction angle 2θ to a second maximum peak I(43°-46°) within a second range of 43 degrees to 46 degrees at the diffraction angle 2θ satisfies 0.05≤I(18°-20°)/I(43°-46°)≤0.90.

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：US20230335729A1

公开(公告)日：2023-10-19

申请号：US18023214

申请日：2021-07-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Jin Zhang ,  Issei Ikeuchi ,  Mitsuhiro Hibino ,  Kensuke Nakura

IPC: H01M4/525 ,  H01M50/46

CPC classification number: H01M4/525 ,  H01M50/46 ,  H01M2004/028

Abstract: A positive electrode active material for a secondary battery has a lithium metal composite oxide having a crystal structure based on a rock salt structure belonging to a space group Fm-3m, and the crystal structure has a vacancy to which no lithium or metal atom is disposed. For the lithium metal composite oxide, for example, a composite oxide represented by a composition formula LiaMnbMcO2-dFd (where M is at least one metal element excluding Li and Mn, 0

公开(公告)号：US11605814B2

公开(公告)日：2023-03-14

申请号：US16683275

申请日：2019-11-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Ryuichi Natsui ,  Kensuke Nakura ,  Junko Matsushita ,  Issei Ikeuchi

IPC: H01M4/505 ,  H01M4/525 ,  H01M10/0562 ,  H01M10/0565 ,  H01M10/052 ,  H01M4/02 ,  C01D15/02 ,  H01M10/0566

Abstract: A positive-electrode active material contains a lithium composite oxide containing manganese. The crystal structure of the lithium composite oxide belongs to a space group Fd-3m. The integrated intensity ratio I(111)/I(400) of a first peak I(111) on the (111) plane to a second peak I(400) on the (400) plane in an XRD pattern of the lithium composite oxide satisfies 0.05≤I(111)/I(400)≤0.90.

公开(公告)号：US11557760B2

公开(公告)日：2023-01-17

申请号：US16597813

申请日：2019-10-09

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Ryuichi Natsui ,  Kensuke Nakura ,  Junko Matsushita ,  Issei Ikeuchi

IPC: H01M4/485 ,  C01G45/00 ,  C01G51/00 ,  C01G53/00 ,  H01M10/0525 ,  H01M4/02

Abstract: A positive-electrode active material contains a lithium composite oxide containing at least one selected from the group consisting of F, Cl, N, and S. The crystal structure of the lithium composite oxide belongs to a space group C2/m. An XRD pattern of the lithium composite oxide comprises a first peak within the first range of 44 degrees to 46 degrees of a diffraction angle 2θ and a second peak within the second range of 18 degrees to 20 degrees of the diffraction angle 2θ. The ratio of the second integrated intensity of the second peak to the first integrated intensity of the first peak is within a range of 0.05 to 0.90.

公开(公告)号：US10886529B2

公开(公告)日：2021-01-05

申请号：US16214208

申请日：2018-12-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takayuki Ishikawa ,  Ryuichi Natsui ,  Issei Ikeuchi ,  Kensuke Nakura

IPC: H01M4/00 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/48 ,  H01M10/0525 ,  C01G45/12 ,  H01M4/62 ,  C01G53/00 ,  C01G51/00 ,  H01M4/02

Abstract: A positive electrode active material includes a lithium composite oxide and a covering material that covers a surface of the lithium composite oxide. The covering material has an electron conductivity of 106 S/m or less. The lithium composite oxide is a multiphase mixture including a first phase having a first crystal structure that belongs to a space group Fm-3m and a second phase having a second crystal structure that belongs to a space group other than a space group Fm-3m. The ratio I(18°-20°)/I(43°-46°) of a first integrated intensity I(18°-20°) of a first maximum peak present at a first diffraction angle 2θ of 18° or more and 20° or less to a second integrated intensity I(43°-46°) of a second maximum peak present at a second diffraction angle 2θ of 43° or more and 46° or less in an XRD pattern of the lithium composite oxide satisfies 0.05≤I(18°-20°)/I(43°-46°)≤0.90.