公开(公告)号：US11251437B2

公开(公告)日：2022-02-15

申请号：US16389038

申请日：2019-04-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akira Kano ,  Ryohei Miyamae ,  Kiyohiro Isii ,  Kensuke Nakura

IPC: H01M4/70 ,  H01M4/134 ,  H01M4/38 ,  H01M4/66 ,  H01M10/052 ,  H01M10/0587 ,  H01M4/02

Abstract: A lithium secondary battery comprises an electrode group and a nonaqueous electrolyte having lithium-ion conductivity. A negative electrode current collector has a first surface facing outward of winding of the electrode group and a second surface facing inward of the winding of the electrode group. At least the first surface or the second surface includes a first region and a second region that is closer to an innermost circumference of the winding of the electrode group than the first region. Protrusions include outer-circumference-side protrusions disposed on the first region and inner-circumference-side protrusions disposed on the second region. In at least the first surface or the second surface, a first area rate is larger than a second area rate.

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

公开(公告)号：US10553899B2

公开(公告)日：2020-02-04

申请号：US15063458

申请日：2016-03-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Izuru Sasaki ,  Kensuke Nakura

IPC: H01M4/62 ,  H01M10/0565 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/056 ,  H01M4/131 ,  H01M10/0562 ,  H01M4/133 ,  H01M4/36 ,  H01M4/583 ,  H01M4/587

Abstract: A battery has a cathode, an anode, and a first solid electrolyte. The cathode contains a particle of a cathode active material, and the anode contains a particle of an anode active material. The first solid electrolyte is disposed between the cathode and the anode. At least one of the surface of the particle of the cathode active material and the surface of the particle of the anode active material is coated with a polyether-based organic solid electrolyte. The polyether-based organic solid electrolyte is in contact with the first solid electrolyte. The polyether-based organic solid electrolyte is a compound of a polymer having an ether bond and an electrolytic salt.

公开(公告)号：US10230104B2

公开(公告)日：2019-03-12

申请号：US15160016

申请日：2016-05-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Ryuichi Natsui ,  Kensuke Nakura

IPC: H01M4/505 ,  C01G45/12 ,  H01M4/525 ,  H01M4/04 ,  H01M10/052

Abstract: A cathode active material contains a compound represented by composition formula (1): LixNay{LiαNaβMn(1−α−β−z)Az}O2. In the formula, A represents at least one selected from the group consisting of Co, Ni, Fe, and Al, and the following conditions are met: 0.75≤x≤1.0, 0