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：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：US20170373307A1

公开(公告)日：2017-12-28

申请号：US15623399

申请日：2017-06-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： DAISUKE KATOU ,  KENICHI HOTEHAMA ,  JUNKO MATSUSHITA

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/62 ,  H01M4/587 ,  H01M4/38 ,  H01M4/48 ,  H01M10/0525 ,  H01M4/02

Abstract: A negative electrode material for a non-aqueous electrolyte secondary battery includes a plurality of composite particles. Each of the plurality of composite particles includes an inorganic particle, one or more covering layers, each of which is in contact with a surface of the inorganic particle, and a carbonaceous material layer that covers the inorganic particle and has voids. The carbonaceous material layer includes a first region having a porosity of 4.3% or more and 10.0% or less, the first region being a region extending from the surface of the inorganic particle to the surface of an imaginary sphere that is centered at the center of the inorganic particle and has a radius of 3r, where r is a radius of the inorganic particle. Each of the voids is separated by one of the one or more covering layers from the surface of the inorganic particle.

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：US20180337423A1

公开(公告)日：2018-11-22

申请号：US15959290

申请日：2018-04-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TETSUYUKI OKANO ,  TAKAYUKI NAKATSUTSUMI ,  MAYUMI MAENISHI ,  MASAHIRO TAKAHATA ,  JUNKO MATSUSHITA ,  AKIRA KANO ,  NOBUHIKO HOJO

IPC: H01M10/0525 ,  H01M4/133 ,  H01M4/583 ,  H01M4/134 ,  H01M4/525 ,  H01M4/66 ,  H01M2/06

Abstract: A negative-electrode active material comprises a graphite including boron and nitrogen. A ratio R1 satisfies 0.5≤R1≤1, where R1=SBN/SB, and SB denotes a total peak area of a boron 1s spectrum of the graphite obtained by X-ray photoelectron spectroscopy, and SBN denotes a peak area of a spectrum assigned to boron bonded to nitrogen in the boron 1s spectrum. A ratio R2 satisfies 0

公开(公告)号：US20190198861A1

公开(公告)日：2019-06-27

申请号：US16293577

申请日：2019-03-05

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： RYUICHI NATSUI ,  JUNKO MATSUSHITA ,  KENSUKE NAKURA

IPC: H01M4/1315 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525

CPC classification number: H01M4/1315 ,  C01G45/00 ,  C01G51/00 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/0565 ,  H01M10/0566 ,  H01M2004/021 ,  H01M2004/028

Abstract: A positive-electrode active material contains a compound represented by the following composition formula (1): LixMeyAzOαFβ  (1) where Me denotes one or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, Cu, Nb, Mo, Ti, Cr, Zr, Zn, Na, K, Ca, Mg, Pt, Au, Ru, and W, A denotes one or more elements selected from the group consisting of B, Si, and P, and the following conditions: 1.3≤x≤2.1, 0.8≤y≤1.3, 0

公开(公告)号：US20180337425A1

公开(公告)日：2018-11-22

申请号：US15959294

申请日：2018-04-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TAKAYUKI NAKATSUTSUMI ,  AKIRA KANO ,  JUNKO MATSUSHITA ,  NOBUHIKO HOJO

IPC: H01M10/0525 ,  H01M4/133 ,  H01M4/583 ,  H01M4/134 ,  H01M4/38 ,  H01M4/66 ,  H01M2/20

CPC classification number: H01M10/0525 ,  C01B32/205 ,  C01B32/21 ,  H01M2/204 ,  H01M4/133 ,  H01M4/134 ,  H01M4/366 ,  H01M4/381 ,  H01M4/583 ,  H01M4/5835 ,  H01M4/587 ,  H01M4/62 ,  H01M4/662 ,  H01M2004/027 ,  H01M2004/028

Abstract: A negative-electrode active material comprises a graphite including at least boron and fluorine. The fluorine is disposed at least on a surface of the graphite. A ratio R satisfies 0.5≤R≤1, where R=SBB/SB, and SB denotes a total peak area of a boron 1s spectrum of the graphite obtained by X-ray photoelectron spectroscopy, and SBB denotes a peak area of all spectra each having a peak in a binding energy range of not less than 184.0 eV and not more than 188.5 eV in the boron 1s spectrum.

公开(公告)号：US20180337424A1

公开(公告)日：2018-11-22

申请号：US15959292

申请日：2018-04-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TAKAYUKI NAKATSUTSUMI ,  NOBUHIKO HOJO ,  AKIRA KANO ,  JUNKO MATSUSHITA

IPC: H01M10/0525 ,  H01M4/133 ,  H01M4/583 ,  H01M4/134 ,  H01M4/38 ,  H01M4/66 ,  H01M2/20

Abstract: A negative-electrode active material comprises: a graphite including boron; and a covering layer that covers a surface of the graphite. The covering layer comprises carbon. A ratio R satisfies 0≤R≤0.001, where R=SB/(SB+SC), and SB denotes a total peak area of a boron 1 s spectrum of the negative-electrode active material obtained by X-ray photoelectron spectroscopy, and SC denotes a total peak area of a carbon 1 s spectrum of the negative-electrode active material obtained by X-ray photoelectron spectroscopy.