公开(公告)号：US20230395852A1

公开(公告)日：2023-12-07

申请号：US18034172

申请日：2021-10-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Sho Shibata ,  Hirotetsu Suzuki ,  Motohiro Sakata

IPC: H01M10/0567 ,  H01M4/134 ,  H01M4/38 ,  H01M10/052 ,  C07F7/18

CPC classification number: H01M10/0567 ,  H01M4/134 ,  H01M4/386 ,  H01M10/052 ,  C07F7/1804

Abstract: An alkoxysilyl compound includes two or more silyl groups bonded with a chain including an ether group, wherein the two or more silyl groups each has at least one selected from the group consisting of an alkoxy group and an oxy alkyl group. The alkoxysilyl compound is added to a non-aqueous electrolyte as an additive for a non-aqueous electrolyte.

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：US20250132325A1

公开(公告)日：2025-04-24

申请号：US18687449

申请日：2022-07-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tooru Matsui ,  Keisuke Asaka ,  Hirotetsu Suzuki ,  Motohiro Sakata ,  Kensuke Nakura

IPC: H01M4/525 ,  H01M4/02 ,  H01M4/66 ,  H01M10/052

Abstract: A positive electrode with a positive electrode mixture layer provided on a surface of a positive electrode current collector, which includes a first layer contacting the positive electrode current collector and a second layer contacting the first layer. The first layer includes first active material particles with a particle diameter L. The second layer includes active material particles with a particle diameter R. Third positive electrode active material particles with a particle diameter r are included at least at an interface between the first and the second layers, wherein R>L>r. The first active material particles include a lithium transition metal composite oxide with a ratio of Co in metal element atoms other than Li of 2 atom % or more. The second and third active material particles including a different lithium transition metal composite oxide than the first active material particles.

公开(公告)号：US20250132310A1

公开(公告)日：2025-04-24

申请号：US18693312

申请日：2022-06-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masahiro Sakai ,  Hirotetsu Suzuki

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62

Abstract: Provided are: a high-density positive electrode capable of suppressing battery resistance; and a secondary battery using said positive electrode. A positive electrode for a secondary battery according to one aspect of the present disclosure has a positive electrode current collector and a positive electrode mixture layer provided on the surface of the positive electrode current collector, wherein: the positive electrode mixture layer includes n types of positive electrode active materials (n is an integer of 2 or more) and a low-hardness compound having a lower hardness than any of the n types of positive electrode active materials; and the content of the low-hardness component in the positive electrode mixture layer is more than 0.05 parts by mass and less than 1.00 parts by mass with respect to 100 parts by mass of the positive electrode active material.

公开(公告)号：US20250038274A1

公开(公告)日：2025-01-30

申请号：US18720101

申请日：2022-11-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

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

IPC: H01M10/0587 ,  H01M4/02 ,  H01M4/587 ,  H01M50/107

Abstract: A cylindrical secondary battery comprises an external can that has a cylindrical tube part and an electrode body that is provided inside the tube part. The electrode body is obtained by winding a positive electrode plate and a negative electrode plate with a separator therebetween. In the external can, the ratio of the average value of the outer diameter of the middle of the tube part in the axial direction of the external can to the average value of the outer diameter of the bottom-side end of the tube part is 100.10-100.50%, and the standard deviation of the outer diameter of the middle of the tube part is 0.020-0.050 mm.

公开(公告)号：US20240222606A1

公开(公告)日：2024-07-04

申请号：US18557308

申请日：2022-04-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Sho Shibata ,  Hirotetsu Suzuki ,  Motohiro Sakata

IPC: H01M4/36 ,  C01B33/32 ,  C07F7/18 ,  H01M4/02 ,  H01M4/38 ,  H01M4/58 ,  H01M4/60 ,  H01M4/62

CPC classification number: H01M4/366 ,  C01B33/32 ,  C07F7/1804 ,  H01M4/386 ,  H01M4/5825 ,  H01M4/60 ,  C01P2006/40 ,  H01M2004/027 ,  H01M4/625

Abstract: The disclosed negative electrode active material for a nonaqueous electrolyte secondary battery includes active material particles containing silicon, and a surface layer formed on surfaces of the active material particles. The surface layer contains a reaction product of a compound allowed to react so as to form a siloxane bond. The compound includes a structure represented by Si-R1-Si. The R1 is an atomic group having a chain portion including, as constituent elements, an alkylene group and at least one selected from the group consisting of a sulfur atom, an oxygen atom, and a nitrogen atom. The two Si's are each bound with at least one atomic group selected from the group consisting of an alkoxy group having 1 to 6 carbon atoms, and the like.

公开(公告)号：US11894561B2

公开(公告)日：2024-02-06

申请号：US16862528

申请日：2020-04-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hirotetsu Suzuki

IPC: H01M4/485 ,  H01M4/66 ,  H01M10/0569

CPC classification number: H01M4/666 ,  H01M4/485 ,  H01M4/661 ,  H01M4/667 ,  H01M10/0569 ,  H01M2300/0034

Abstract: Provided is a secondary battery comprising a cathode comprising a cathode current collector and a cathode mixture layer containing and a cathode active material, an anode comprising an anode current collector and coating layer, and a non-aqueous electrolyte containing a non-aqueous solvent and a lithium salt which has been dissolved in the non-aqueous solvent. A surface of the anode current collector is coated with the coating layer. The coating layer contains an alkaline earth metal fluoride. During charge, a lithium metal is deposited on the anode. During discharge, the lithium metal is dissolved in the non-aqueous electrolyte.

公开(公告)号：US20230091033A1

公开(公告)日：2023-03-23

申请号：US17795174

申请日：2021-01-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Sho Shibata ,  Hirotetsu Suzuki ,  Motohiro Sakata

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M4/134 ,  H01M4/38

Abstract: An additive for a nonaqueous electrolyte includes a bis-alkoxysilyl compound, wherein the bis-alkoxysilyl compound has two silyl groups coupled with a chain including a sulfide group, the two 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：US20230078924A1

公开(公告)日：2023-03-16

申请号：US17801934

申请日：2021-02-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Saifullah Badar ,  Takuji Tsujita ,  Keisuke Asaka ,  Hirotetsu Suzuki ,  Motohiro Sakata

IPC: H01M4/36 ,  H01M4/62 ,  H01M4/587 ,  H01M4/04

Abstract: A negative electrode for a secondary battery includes a negative electrode mixture layer having a negative electrode active material, a first layer covering at least a portion of a surface of the negative electrode active material, and a second layer covering at least a portion of a surface of the first layer, wherein the first layer includes a carbon material, and the second layer includes silicone.

公开(公告)号：US10833316B2

公开(公告)日：2020-11-10

申请号：US15813218

申请日：2017-11-15

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.