公开(公告)号：US12057564B2

公开(公告)日：2024-08-06

申请号：US17152801

申请日：2021-01-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shuhei Uchida ,  Ryuichi Natsui ,  Kensuke Nakura

IPC: H01M4/131 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/131 ,  H01M4/364 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  C01P2002/74 ,  H01M2004/028

Abstract: A positive electrode active material includes a lithium composite oxide having a crystal structure belonging to the space group Fd-3m and has an integrated intensity ratio I(18°-20°)/I(43°-46°) of greater than or equal to 0.05 and less than or equal to 0.90 and an integrated intensity ratio I(63°-65°)/I(17°-19°) of greater than or equal to 0.8 and less than or equal to 2.0. The integrated intensity ratio I(18°-20°)/I(43°-46°) is a ratio of an integrated intensity I(18°-20°) to an integrated intensity I(43°-46°). The integrated intensity ratio I(63°-65°)/I(17°-19°) is a ratio of an integrated intensity I(63°-65°) to an integrated intensity I(17°-19°). The integrated intensity I(A°-B°) is an integrated intensity of a maximum peak present in a 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 positive electrode active material.

公开(公告)号：US20240072252A1

公开(公告)日：2024-02-29

申请号：US18269391

申请日：2021-12-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Ryuichi Natsui ,  Kensuke Nakura ,  Mitsuhiro Hibino

IPC: H01M4/525 ,  H01M4/04 ,  H01M4/131 ,  H01M4/62 ,  H01M10/0569

CPC classification number: H01M4/525 ,  H01M4/0404 ,  H01M4/131 ,  H01M4/623 ,  H01M4/625 ,  H01M10/0569 ,  H01M2004/028

Abstract: A positive electrode for secondary batteries includes a positive electrode current collector, and a positive electrode mixture layer provided on a surface of the positive electrode current collector. The positive electrode mixture layer contains a positive electrode active material, a conductive agent, a polysaccharide, and a resin other than the polysaccharide, and at least part of surfaces of the positive electrode active material, the conductive agent, and the resin is coated with the polysaccharide.

公开(公告)号：US20230101615A1

公开(公告)日：2023-03-30

申请号：US17801190

申请日：2021-02-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Ryuichi Natsui ,  Mitsuhiro Hibino ,  Kensuke Nakura

IPC: H01M10/44 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H02J7/00

Abstract: This charging method is A method for charging a nonaqueous electrolyte secondary cell containing a lithium-rich positive-electrode active material. When constant-current charging is performed to a predetermined voltage V2 which is equal to or higher than a setting voltage V1, and then constant-current discharging is performed to a predetermined voltage V3, V3

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：US20230071732A1

公开(公告)日：2023-03-09

申请号：US17798965

申请日：2021-02-10

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Ryuichi Natsui ,  Mitsuhiro Hibino ,  Kensuke Nakura

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

Abstract: This positive electrode active material for a non-aqueous electrolyte secondary battery contains a lithium transition metal composite oxide represented by the composition formula LixMnyNizALaMbO2-cFc (in the formula, M represents at least two elements selected from Ti, Co, Si, Sr, Nb, W, Mo, P, Ca, Mg, Sb, Na, B, V, Cr, Fe, Cu, Zn, Ge, Zr, Ru, K, and Bi; 1.0

公开(公告)号：US11588143B2

公开(公告)日：2023-02-21

申请号：US17039801

申请日：2020-09-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hirotetsu Suzuki ,  Ryuichi Natsui ,  Nobuhiko Hojo

IPC: H01M4/1315 ,  H01M4/505 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0567 ,  H01M4/525 ,  H01M4/485 ,  C01G45/00 ,  H01M10/0525 ,  C01G51/00 ,  C01G53/00 ,  H01M10/0566 ,  H01M4/58 ,  H01M10/0569 ,  H01M4/02

Abstract: Provided is a battery including: a positive electrode containing a positive electrode active material; a negative electrode; and an electrolyte solution containing a nonaqueous solvent. The positive electrode active material contains a compound represented by composition formula (1) below and having a crystal structure belonging to space group FM3-M: LixMeyOαFβ. (1) Here, Me is 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 C. x, y, α, and β satisfy the following conditions: 1.7≤x≤2.2, 0.8≤y≤1.3, 1≤α≤2.5, and 0.5≤β≤2, respectively. The nonaqueous solvent includes at least one solvent selected from hydrofluoroethers, phosphazenes, phosphates, and perfluoropolyethers.

公开(公告)号：US11569492B2

公开(公告)日：2023-01-31

申请号：US17021468

申请日：2020-09-15

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Ryuichi Natsui ,  Kensuke Nakura

IPC: H01M4/1315 ,  H01M4/505 ,  H01M10/052 ,  C01G51/00 ,  C01G45/00 ,  H01M4/36 ,  C01G53/00 ,  H01M4/485 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/62 ,  H01M4/02

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：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

公开(公告)号：US11171327B2

公开(公告)日：2021-11-09

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 ,  H01M10/0525 ,  H01M4/48 ,  H01M4/485 ,  H01M4/02

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-3 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 0.62≤I(003)/I(104) ≤0.90. The covering material has an electron conductivity of 106S/m or less.

公开(公告)号：US10854876B2

公开(公告)日：2020-12-01

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 ,  C01B21/084 ,  C01G45/00 ,  H01M4/525 ,  H01M4/58 ,  H01M4/485 ,  H01M10/0565 ,  H01M4/131 ,  H01M4/1315 ,  C01G51/00 ,  C01G53/00 ,  H01M10/0562 ,  H01M4/02

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