公开(公告)号：US20200075946A1

公开(公告)日：2020-03-05

申请号：US16503442

申请日：2019-07-03

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KENSUKE NAKURA ,  RYUICHI NATSUI ,  SHUHEI UCHIDA ,  TAKUJI TSUJITA

IPC: H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/36 ,  C01G25/02 ,  C01G23/04 ,  H01M4/62 ,  H01M4/131

Abstract: Provided is a cathode active material comprising a lithium composite oxide and a covering material which covers a surface of the lithium composite oxide. The lithium composite oxide is a multi-phase mixture including a first phase having a crystal structure which belongs to a monoclinic crystal; a second phase having a crystal structure which belongs to a hexagonal crystal; and a third phase having a crystal structure which belongs to a cubical crystal. The lithium composite oxide has an integral intensity ratio I(18°-20°)/I(43°-46°) of not less than 0.05 and not more than 0.99, where the integral intensity I(α°-β°) is an integral intensity of a peak which is a maximum peak present within a range of a diffraction angle 2θ of not less than α° and not more than β° in an X-ray diffraction pattern of the lithium composite oxide. The covering material has an electronic conductivity of not more than 106 S/m.

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：US20210167357A1

公开(公告)日：2021-06-03

申请号：US17165951

申请日：2021-02-03

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： RYUICHI NATSUI ,  KENSUKE NAKURA

IPC: H01M4/131 ,  H01M4/134 ,  H01M4/505 ,  H01M4/525 ,  H01M4/36 ,  C01G53/00

Abstract: A positive electrode active material according to the present disclosure includes a lithium composite oxide that contains first particles having a crystal structure belonging to space group R-3m and second particles having a crystal structure belonging to space group C2/m. The crystal structure of the second particles has a larger amount of cation mixing than the crystal structure of the first particles. The second particles have a smaller particle size than the first particles. Mathematical Formula 0.05≤integrated intensity ratio I(18°-20°)/I(43°-46°)≤0.99 is satisfied. The integrated intensity ratio I(18°-20°)/I(43°-46°) is a ratio of the integrated intensity I(18°-20°) to the integrated intensity I(43°-46°). The integrated intensity I(A°-B°) is the integrated intensity of a maximum peak present in the range of angle of diffraction 2θ greater than or equal to A° and less than or equal to B° in the X-ray diffraction pattern of the lithium composite oxide.

公开(公告)号：US20200091514A1

公开(公告)日：2020-03-19

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 ,  H01M10/0525 ,  C01B11/24

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

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：US20190036113A1

公开(公告)日：2019-01-31

申请号：US16039305

申请日：2018-07-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TAKAYUKI ISHIKAWA ,  RYUICHI NATSUI ,  KENSUKE NAKURA

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M10/0525

Abstract: A positive electrode active material contains a lithium composite oxide and a covering material. The lithium composite oxide contains at least one element selected from the group consisting of fluorine, chlorine, nitrogen, and sulfur. The lithium composite oxide has a crystal structure that belongs to space group C2/m. The ratio I(003)/I(104) of a first integrated intensity I(003) of a first peak corresponding to a (003) plane to a second integrated intensity I(104) of a second peak corresponding to a (104) plane in an XRD pattern of the lithium composite oxide satisfies 0.05≤I(003)/I(104)≤0.90. The covering material has an electron conductivity of 106 S/m or less.

公开(公告)号：US20180205087A1

公开(公告)日：2018-07-19

申请号：US15838360

申请日：2017-12-12

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TAKAYUKI ISHIKAWA ,  RYUICHI NATSUI ,  KENSUKE NAKURA

IPC: H01M4/62 ,  H01M4/505 ,  H01M4/525 ,  H01M4/36 ,  C07F7/08

CPC classification number: H01M4/628 ,  C07F7/0834 ,  H01M4/366 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/623 ,  H01M10/0525 ,  H01M2004/028

Abstract: A positive electrode active material contains a lithium composite oxyfluoride and an organosilicon compound binding to the lithium composite oxyfluoride. The organosilicon compound has insulation property.

公开(公告)号：US20180097227A1

公开(公告)日：2018-04-05

申请号：US15821745

申请日：2017-11-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： RYUICHI NATSUI ,  KENSUKE NAKURA

IPC: H01M4/48 ,  H01M10/0525 ,  H01M4/62

Abstract: A positive-electrode active material contains a compound that has a crystal structure belonging to a space group FM3-M and that is represented by the composition formula (1) and a lithium ion conductor, LixMeyOαFβ  (1) wherein Me denotes one or two or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and Cr, and the following conditions are satisfied. 17≦x≦2.2 0.8≦y≦1.3 1≦α≦2.5 0.5≦β≦2

公开(公告)号：US20180090760A1

公开(公告)日：2018-03-29

申请号：US15813212

申请日：2017-11-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： RYUICHI NATSUI ,  KENSUKE NAKURA

IPC: H01M4/525 ,  H01M4/36 ,  H01M4/62 ,  H01M4/505

Abstract: A positive-electrode active material contains a compound that has a crystal structure belonging to a space group FM3-M and contains is represented by the composition formula (1) and an insulating compound, LixMeyOαFβ  (1) wherein Me denotes one or two or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and Cr, and the following conditions are satisfied. 1.7≦x≦2.2 0.8≦y≦1.3 1≦α≦2.5 0.5≦β≦2

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.