公开(公告)号：US20210193999A1

公开(公告)日：2021-06-24

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 ,  H01M10/0525 ,  C01G45/12

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：US20200044249A1

公开(公告)日：2020-02-06

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 ,  H01M10/0525 ,  C01G53/00 ,  C01G45/00 ,  C01G51/00

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：US20200006749A1

公开(公告)日：2020-01-02

申请号：US16558332

申请日：2019-09-03

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： ISSEI IKEUCHI ,  RYUICHI NATSUI ,  KENSUKE NAKURA

IPC: H01M4/131 ,  H01M4/505 ,  H01M10/052

Abstract: A positive-electrode active material contains a lithium composite oxide containing at least one selected from the group consisting of fluorine, chlorine, nitrogen, sulfur, bromine, and iodine. The crystal structure of the lithium composite oxide belongs to the space group R-3m. The integrated intensity ratio I(003)/I(104) of a peak intensity I(003) on the (003) plane to a peak intensity I(104) on the (104) plane in an XRD pattern of the lithium composite oxide satisfies 0.62≤I(003)/I(104)≤0.90.

公开(公告)号：US20210057742A1

公开(公告)日：2021-02-25

申请号：US17092820

申请日：2020-11-09

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： ISSEI IKEUCHI ,  RYUICHI NATSUI ,  KENSUKE NAKURA

IPC: H01M4/505 ,  H01M4/525 ,  H01M4/38 ,  H01M10/0562

Abstract: A positive electrode active material according to the present disclosure includes: a lithium composite oxide which contains 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 a layered structure, and a relationship 0.95≤intensity ratio IMn1/IMn2≤1.75 is satisfied. The intensity ratio IMn1/IMn2 is a ratio of an intensity IMn1 to an intensity IMn2. The intensity IMn1 is an intensity of a first proximity peak of the Mn in a radial distribution function of the Mn contained in the lithium composite oxide. The intensity IMn2 is an intensity of a second proximity peak of the Mn in the radial distribution function of the Mn contained in the lithium composite oxide.

公开(公告)号：US20200083529A1

公开(公告)日：2020-03-12

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

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：US20190181443A1

公开(公告)日：2019-06-13

申请号：US16278701

申请日：2019-02-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： ISSEI IKEUCHI ,  RYUICHI NATSUI ,  KENSUKE NAKURA

IPC: H01M4/505 ,  H01M10/0525 ,  C01B11/24 ,  C01G45/00 ,  C01B21/084

Abstract: A positive-electrode active material contains a compound represented by the following composition formula (1): LixMeyOαXβ  (1) where Me denotes one or more elements selected from the group consisting of Mn, Ni, Co, Fe, Al, Sn, Cu, Nb, Mo, Bi, Ti, V, Cr, Y, Zr, Zn, Na, K, Ca, Mg, Pt, Au, Ag, Ru, Ta, W, La, Ce, Pr, Sm, Eu, Dy, and Er, X denotes two or more elements selected from the group consisting of F, Cl, Br, I, N, and S, and x, y, α, and β satisfy 0.75≤x≤2.25, 0.75≤y≤1.50, 1≤α

公开(公告)号：US20200020943A1

公开(公告)日：2020-01-16

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

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：US20170244104A1

公开(公告)日：2017-08-24

申请号：US15406825

申请日：2017-01-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： RYUICHI NATSUI ,  ISSEI IKEUCHI ,  KENSUKE NAKURA

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

CPC classification number: H01M4/525 ,  C01G45/1228 ,  C01G51/42 ,  C01G53/42 ,  C01P2002/72 ,  C01P2002/76 ,  H01M4/505 ,  H01M10/0525 ,  H01M2004/028

Abstract: A cathode active material contains a compound having a crystal structure of space group FM-3M, represented by composition formula (1), and having a half-width in 2δ of 0.9° or more and 2.4° or less for a (200) diffraction peak in powder X-ray diffraction (XRD): LixMeyO2. . . (1). In the formula, Me represents one or two or more elements selected from the group consisting of Mn, Nb, Ti, Ni, Co, Fe, Sn, Cu, Mo, Bi, V, and Cr. In addition to this, the following conditions are met: 0.5≦x/y≦3.0; and 1.5≦x+y≦2.3.

公开(公告)号：US20170244103A1

公开(公告)日：2017-08-24

申请号：US15406842

申请日：2017-01-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： RYUICHI NATSUI ,  ISSEI IKEUCHI ,  KENSUKE NAKURA

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

CPC classification number: H01M4/505 ,  C01G45/1228 ,  C01G51/50 ,  C01G53/50 ,  C01P2002/72 ,  C01P2002/76 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028

Abstract: A cathode active material contains a compound having a crystal structure of space group FM-3M and represented by composition formula (1): LixMeyO2 . . . (1). In the formula, Me represents any of the following: Mn; Mn and one or two or more elements selected from the group consisting of Co, Fe, Sn, Cu, Mo, Bi, V, and Cr; Ni, Mn, and one or two or more elements selected from the group consisting of Co, Fe, Sn, Cu, Mo, Bi, V, and Cr; and one or two or more elements selected from the group consisting of Ni, Co, Fe, Sn, Cu, Mo, Bi, V, and Cr. In addition to this, the following conditions are met: 0.5≦x/y≦3.0; and 1.5≦x+y≦2.3.

公开(公告)号：US20190221837A1

公开(公告)日：2019-07-18

申请号：US16212992

申请日：2018-12-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TAKAYUKI ISHIKAWA ,  RYUICHI NATSUI ,  ISSEI IKEUCHI ,  KENSUKE NAKURA

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/48 ,  H01M10/0525

CPC classification number: H01M4/366 ,  H01M4/483 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2300/004 ,  H01M2300/0065

Abstract: A positive electrode active material includes a lithium composite oxide containing: at least one element selected from the group consisting of fluorine, chlorine, nitrogen, sulfur, bromine, and iodine; and a covering material that covers a surface of the lithium composite oxide. The lithium composite oxide has a crystal structure that belongs to a space group R-3m. The ratio |(003)/|(104) of a first integrated intensity ||(003) of a first peak corresponding to a (003) plane to a second integrated intensity ||(104) of a second peak corresponding to a (104) plane in an XRD pattern of the lithium composite oxide satisfies 0.62≤|(003)/|(104)≤0.90. The covering material has an electron conductivity of 106 S/m or less