公开(公告)号：US11228033B2

公开(公告)日：2022-01-18

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 ,  H01M4/131 ,  H01M4/36 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02 ,  C01G25/02 ,  C01G23/04 ,  H01M4/62 ,  B82Y30/00

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：US11183684B2

公开(公告)日：2021-11-23

申请号：US16459614

申请日：2019-07-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takuji Tsujita ,  Kensuke Nakura ,  Shuhei Uchida ,  Ryuichi Natsui

IPC: H01M4/36 ,  H01M4/485 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/02

Abstract: A cathode active material includes 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 space group C2/m and a second phase having a crystal structure which belongs to a space group R-3m. 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 1.15, where the integral intensity ratio I(18°-20°)/I(43°-46°) is a ratio of an integral intensity I(18°-20°) to an integral intensity I(43°-46°). The integral intensity I(α°-β°) is an integral intensity of a first 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.

公开(公告)号：US11043661B2

公开(公告)日：2021-06-22

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: H01M4/1315 ,  H01M4/62 ,  H01M4/505 ,  H01M4/36 ,  C07F7/08 ,  H01M4/525 ,  H01M4/485 ,  H01M4/02 ,  H01M10/0525 ,  H01M10/0565 ,  H01M10/0566

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：US10818912B2

公开(公告)日：2020-10-27

申请号：US15814874

申请日：2017-11-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takayuki Nakatsutsumi ,  Ryuichi Natsui ,  Nobuhiko Hojo

IPC: H01M4/1315 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/505 ,  C01G45/00 ,  C01G53/00 ,  C01G51/00 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0567 ,  H01M4/485 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

Abstract: A battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolytic solution including a lithium hexafluorophosphate and an additive. The positive electrode active material includes a compound having a crystal structure belonging to a space group FM3-M and represented by Compositional Formula (1): LixMeyOαFβ. The additive is at least one selected from the group consisting of difluorophosphates, tetrafluoroborates, bis(oxalate)borate salts, bis(trifluoromethanesulfonyl)imide salts, and bis(fluorosulfonyl)imide salts.

公开(公告)号：US20190221838A1

公开(公告)日：2019-07-18

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: H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/48

CPC classification number: H01M4/366 ,  H01M4/483 ,  H01M4/505 ,  H01M4/525 ,  H01M2004/028 ,  H01M2300/0034 ,  H01M2300/004 ,  H01M2300/0065

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.

公开(公告)号：US09893356B2

公开(公告)日：2018-02-13

申请号：US14675871

申请日：2015-04-01

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Ryuichi Natsui ,  Kensuke Nakura

IPC: H01M4/505 ,  H01M10/052 ,  H01M4/485 ,  C01G45/12 ,  H01M4/04 ,  H01M4/131 ,  H01M4/1391 ,  H01M2/16 ,  H01M4/62 ,  H01M10/0568 ,  H01M10/0569

CPC classification number: H01M4/505 ,  C01G45/1221 ,  C01G45/1228 ,  C01P2002/72 ,  C01P2002/76 ,  C01P2006/40 ,  H01M2/16 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/621 ,  H01M4/624 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/0034 ,  H01M2300/004

Abstract: The cathode active material for a nonaqueous electrolyte secondary battery according to an aspect of the present disclosure mainly comprises a compound represented by a composition formula: LixNay(LiαNaβMn1−α−β)O2, where x, y, α, and β satisfy 0.75≦x≦1.0, 0

公开(公告)号：US20250006895A1

公开(公告)日：2025-01-02

申请号：US18694558

申请日：2022-06-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shogo Esaki ,  Ryuichi Natsui ,  Kensuke Nakura

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/04 ,  H01M4/525 ,  H01M4/62

Abstract: An electrode for secondary batteries according to one embodiment of the present disclosure is provided with a collector and a mixture layer that is arranged on the collector, and is characterized in that: the mixture layer contains an electrode active material that comprises a metal element, a water-insoluble additive and a water-soluble additive; the water-soluble additive contains a polysaccharide; and the particle diameter of the polysaccharide is larger than the particle diameter of the electrode active material.

公开(公告)号：US11923529B2

公开(公告)日：2024-03-05

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 ,  C01G53/00 ,  H01M4/134 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/02

CPC classification number: H01M4/131 ,  C01G53/50 ,  H01M4/134 ,  H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  C01P2002/74 ,  H01M2004/028

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：US11799067B2

公开(公告)日：2023-10-24

申请号：US17022921

申请日：2020-09-16

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Takayuki Nakatsutsumi ,  Ryuichi Natsui ,  Nobuhiko Hojo

IPC: H01M4/1315 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/052 ,  C01G45/00 ,  C01G51/00 ,  C01G53/00 ,  H01M4/485 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/1315 ,  C01G45/00 ,  C01G45/006 ,  C01G51/00 ,  C01G51/006 ,  C01G53/00 ,  C01G53/006 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2002/76 ,  C01P2006/40 ,  H01M2004/028 ,  H01M2220/30 ,  H01M2300/0025 ,  H01M2300/0034 ,  H01M2300/0037

Abstract: A battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolytic solution including an additive. The positive electrode active material includes a compound having a crystal structure belonging to a space group FM3-M and represented by Compositional Formula (1): LixMeyOαFβ, where, Me is one 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 subscripts x, y, α, and β satisfy the following requirements: 1.7≤x≤2.2, 0.8≤y≤1.3, 1≤α≤2.5, and 0.5≤β≤2. The additive is at least one selected from dinitrile compounds and diisocyanate compounds.

公开(公告)号：US11721800B2

公开(公告)日：2023-08-08

申请号：US17031171

申请日：2020-09-24

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Takayuki Nakatsutsumi ,  Ryuichi Natsui ,  Nobuhiko Hojo

IPC: H01M4/1315 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/505 ,  C01G45/00 ,  C01G53/00 ,  C01G51/00 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0567 ,  H01M4/485 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/1315 ,  C01G45/006 ,  C01G51/006 ,  C01G53/006 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  C01P2002/50 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2002/76 ,  C01P2006/40 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/30 ,  H01M2300/0028

Abstract: A battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolytic solution including a lithium hexafluorophosphate and an additive. The positive electrode active material includes a compound having a crystal structure belonging to a space group FM3-M and represented by Compositional Formula (1): LixMeyOαFβ. The additive is at least one selected from the group consisting of difluorophosphates, tetrafluoroborates, bis(oxalate)borate salts, bis(trifluoromethanesulfonyl)imide salts, and bis(fluorosulfonyl)imide salts.