公开(公告)号：US10403935B2

公开(公告)日：2019-09-03

申请号：US15158593

申请日：2016-05-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hirotetsu Suzuki ,  Nobuhiko Hojo

IPC: H01M10/0565 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/0567 ,  H01M10/0568

Abstract: Provided is an electrolytic solution including a nonaqueous solvent and an alkali metal salt. The alkali metal salt is dissolved in the nonaqueous solvent. The nonaqueous solvent contains a perfluoropolyether having a weight-average molecular weight of 350 or more and less than 760. Also provided is a battery including the electrolytic solution, a positive electrode containing a positive electrode active material that can occlude and release an alkali metal cation, and a negative electrode containing a negative electrode active material that can occlude and release the alkali metal cation.

公开(公告)号：US20250046920A1

公开(公告)日：2025-02-06

申请号：US18720197

申请日：2022-11-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kaoru Inoue ,  Hirotetsu Suzuki ,  Takayuki Shirane ,  Takahito Nakayama

IPC: H01M50/136 ,  H01M4/133 ,  H01M4/134 ,  H01M4/36 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/133

Abstract: A cylindrical secondary battery comprises an outer package can with a cylindrical cylinder part and an electrode body arranged within the cylinder part. A ratio of the minimum value of the outer diameters in the cylinder central part of the outer package can, the cylinder central part being positioned in the center in the axial direction, to the average value of the outer diameters in the cylinder bottom end part is 99.89% or more; and the ratio of the maximum value of the outer diameters in the cylinder central part to the average value of the outer diameters in the cylinder bottom end part is 100.80% or less. The outer diameters in the cylinder central part periodically change with respect to the angle of circumference; and the period in which the outer diameters in the cylinder central part change with respect to the angle of circumference is 0.4π to 1.0π.

公开(公告)号：US20230335734A1

公开(公告)日：2023-10-19

申请号：US18027811

申请日：2021-09-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Saifullah Badar ,  Motohiro Sakata ,  Hirotetsu Suzuki

IPC: H01M4/58 ,  H01M4/134

CPC classification number: H01M4/5825 ,  H01M4/134 ,  H01M2004/027

Abstract: This negative electrode active material for secondary batteries contains a silicon composite material which is provided with a lithium ion conductive phase that contains silicon, and silicon particles that are dispersed in the lithium ion conductive phase. The silicon composite material contains a nitrogen-containing compound in the surface; and the nitrogen-containing compound is represented by general formula LimSiOxNyMz (wherein 0≤m≤1, 0≤x≤2.5, 0.025≤y≤1.33, 0≤z≤0.5, and M represents a metal element other than Si and Li).

公开(公告)号：US20230133143A1

公开(公告)日：2023-05-04

申请号：US17915268

申请日：2021-03-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hirotetsu Suzuki ,  Motohiro Sakata

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

Abstract: A positive electrode for a nonaqueous electrolyte secondary battery includes a composite oxide containing lithium and a transition metal, and an additive covering at least a portion of a surface of the composite oxide, wherein the additive includes a cyclic inorganic phosphoric acid compound.

公开(公告)号：US20230070559A1

公开(公告)日：2023-03-09

申请号：US17794356

申请日：2021-01-21

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Sho Shibata ,  Hirotetsu Suzuki ,  Motohiro Sakata

IPC: H01M10/0567 ,  H01M4/38 ,  H01M10/0525 ,  H01M4/62

Abstract: An additive for a nonaqueous electrolyte includes a bis-alkoxysilyl compound having two or more silyl groups coupled with an alkylene group or an amino group, the two or more silyl groups each has at least one selected from the group consisting of an alkoxy group and an oxyalkyl group, and the oxyalkyl group is represented by —O—(CxH2x+1Oy), where x is an integer of 1 or more, and y is an integer of 1 or more.

公开(公告)号：US11594729B2

公开(公告)日：2023-02-28

申请号：US16846444

申请日：2020-04-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hirotetsu Suzuki

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/131 ,  H01M4/04 ,  H01M4/36 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/134 ,  H01M4/02 ,  H01M4/66

Abstract: Provides is a cathode active material comprising particles each containing a lithium composite oxide, a coating layer containing an ammonium phosphate compound containing a metal other than lithium. The coating layer coats each of the particles. The metal other than lithium includes at least one selected from the group consisting of manganese, nickel, and cobalt.

公开(公告)号：US20220367863A1

公开(公告)日：2022-11-17

申请号：US17771284

申请日：2020-10-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tooru Matsui ,  Hiromi Morita ,  Yoshiki Iwai ,  Kohei Hara ,  Hirotetsu Suzuki ,  Motohiro Sakata

IPC: H01M4/46 ,  H01M10/0525 ,  H01M50/431 ,  H01M10/0565

Abstract: An aluminum foil comprising an aluminum foil substrate that has a porous region, wherein the porous region is formed throughout the entirety of the aluminum foil substrate in the thickness direction thereof.

公开(公告)号：US11362322B2

公开(公告)日：2022-06-14

申请号：US16410522

申请日：2019-05-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hirotetsu Suzuki ,  Akira Kano

IPC: H01M4/134 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M4/02

Abstract: Provided is a lithium secondary battery comprising a cathode, an anode, and a non-aqueous electrolyte having lithium ion conductivity. A lithium metal is precipitated on a surface of the anode during charge of the lithium secondary battery. The lithium metal is dissolved from the surface of the anode in the non-aqueous electrolyte during discharge of the lithium secondary battery. The non-aqueous electrolyte contains a solvent and a lithium salt. The solvent includes a fluorinated ether. The fluorinated ether has a fluorination ratio of more than 0% and not more than 60%.

公开(公告)号：US11196087B2

公开(公告)日：2021-12-07

申请号：US15937808

申请日：2018-03-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hirotetsu Suzuki ,  Nobuhiko Hojo

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M50/411 ,  H01M50/446 ,  H01M10/0568

Abstract: A nonaqueous electrolyte includes a nonaqueous solvent and an alkali metal salt dissolved in the nonaqueous solvent. The nonaqueous solvent contains a perfluoropolyether and a nitrile compound represented by a formula Rf—CN, where Rf represents a hydrocarbon group which has a carbon number of 2 to 4 and in which at least one hydrogen atom is substituted with fluorine.

公开(公告)号：US10700380B2

公开(公告)日：2020-06-30

申请号：US16004439

申请日：2018-06-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akira Kano ,  Hirotetsu Suzuki ,  Junichi Sakamoto ,  Kensuke Nakura

IPC: H01M10/0567 ,  H01M10/0568 ,  H01M10/052 ,  H01M4/131 ,  H01M4/134 ,  H01M4/38 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/02

Abstract: A lithium secondary battery includes a positive electrode, a negative electrode on which a lithium metal is deposited in a charged state, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte containing a nonaqueous solvent and a lithium salt containing a carborane anion.