公开(公告)号：US20250006896A1

公开(公告)日：2025-01-02

申请号：US18695962

申请日：2022-08-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tasuku Ishiguro ,  Nanami Takeda ,  Yosuke Sato

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/58 ,  H01M10/0567

Abstract: Disclosed is a non-aqueous electrolyte secondary battery including: a negative electrode that contains a negative electrode material mixture; a separator, a positive electrode that is provided to oppose the negative electrode via the separator, and a non-aqueous electrolyte. The negative electrode material mixture contains a negative electrode active material. The negative electrode active material contains 3 mass % or more of a silicon-containing material. The silicon-containing material contains carbon composite particles. The carbon composite particles have a carbon phase and a silicon phase dispersed in the carbon phase. The non-aqueous electrolyte contains a 5- or 6-membered cyclic compound component that contains a sulfur element as a ring-constituting element.

公开(公告)号：US20230163285A1

公开(公告)日：2023-05-25

申请号：US17915055

申请日：2021-03-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Nanami Takeda ,  Yukihiro Oki ,  Kazuko Asano ,  Mitsuhiro Hibino

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

CPC classification number: H01M4/387 ,  H01M4/622 ,  H01M10/0525 ,  H01M2004/027

Abstract: This lithium ion battery comprises a positive electrode having a positive electrode mixture layer that contains a positive electrode active material, and a negative electrode having a negative electrode mixture layer that contains a negative electrode active material; and this lithium ion battery is charged and discharged by the movement of lithium ions between the positive electrode and the negative electrode. The negative electrode mixture layer contains a negative electrode active material that is represented by general formula M3Me2X7 (wherein M contains at least one element of La, Ce, Ba, Sr, Zr, Ca, Mg and Y; Me contains at least one element of Ti, V, Cr, Nb, Mn, Ni, Fe, Co and Cu; and X contains at least one element of Ge, Si, Sn, Al, P, Sb and B), and a binder that contains ammonium carboxymethyl cellulose (NH4—CMC).

公开(公告)号：US20230275220A1

公开(公告)日：2023-08-31

申请号：US18014842

申请日：2021-08-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yukihiro Oki ,  Kazuko Asano ,  Nanami Takeda ,  Mitsuhiro Hibino

IPC: H01M4/38

CPC classification number: H01M4/386 ,  H01M2004/027

Abstract: A negative electrode active material for a secondary battery includes an intermetallic compound having a cage structure. The cage structure is constituted of at least one first atom located within a cage, and a plurality of second atoms arranged in a cage-like form so as to surround the first atom. The first atom is a cerium atom, and the plurality of the second atoms include 8 or more and 17 or less silicon atoms.

公开(公告)号：US20250140820A1

公开(公告)日：2025-05-01

申请号：US18681201

申请日：2022-06-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuko Asano ,  Yukihiro Oki ,  Mitsuhiro Hibino ,  Nanami Takeda

IPC: H01M4/38 ,  H01M4/02 ,  H01M4/134 ,  H01M10/0525

Abstract: The negative electrode active material is represented by general formula M3Me2X7 (where: M includes La and/or Ca; Me includes at least one element selected from the group consisting of Mn, Ni, Fe and Co; X includes at least one element selected from the group consisting of Ge, Si, Sn, and Al). The dislocation density of the negative electrode active material is at least 1×1015 cm−2.

公开(公告)号：US20240282946A1

公开(公告)日：2024-08-22

申请号：US18681158

申请日：2022-06-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuko Asano ,  Yukihiro Oki ,  Nanami Takeda ,  Mitsuhiro Hibino

IPC: H01M4/38 ,  C22C1/02 ,  C22C13/00 ,  H01M4/02 ,  H01M4/134 ,  H01M10/0525

CPC classification number: H01M4/387 ,  C22C1/02 ,  C22C13/00 ,  H01M4/134 ,  H01M10/0525 ,  H01M2004/027

Abstract: A negative electrode active material is represented by general formula M3Me2X7 (wherein M comprises at least one of La and Ca; Me comprises at least one element that is selected from the group consisting of Mn, Ni, Fe and Co; and X comprises at least one element that is selected from the group consisting of Ge, Si, Sn, and Al). With respect to the XRD pattern obtained by XRD measurement wherein Cu is used for an anticathode, the half-value width of the diffraction peak of the (1 171) plane of the negative electrode active material is 0.4713° or more.

公开(公告)号：US20230335726A1

公开(公告)日：2023-10-19

申请号：US18023209

申请日：2021-08-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuko Asano ,  Yukihiro Oki ,  Nanami Takeda ,  Mitsuhiro Hibino

IPC: H01M4/38 ,  H01M4/134 ,  C22C30/00

CPC classification number: H01M4/386 ,  H01M4/134 ,  C22C30/00 ,  H01M2004/027

Abstract: A negative electrode active material for a secondary battery includes an intermetallic compound having a cage structure. The cage structure is constituted of at least one first atom located within a cage, and a plurality of second atoms arranged in a cage-like form so as to surround the first atom. The first atom is a zirconium atom, and the plurality of the second atoms include 8 or more and 16 or less silicon atoms.

公开(公告)号：US20230141498A1

公开(公告)日：2023-05-11

申请号：US17794076

申请日：2021-01-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuko Asano ,  Yukihiro Oki ,  Nanami Takeda ,  Mitsuhiro Hibino

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

CPC classification number: H01M4/387 ,  H01M4/622 ,  H01M10/0525 ,  H01M2004/027

Abstract: Provided is a lithium ion battery with a positive electrode having a positive electrode mixture layer that contains a positive electrode active material, and a negative electrode having a negative electrode mixture layer that contains a negative electrode active material, the lithium ion battery being charged and discharged by the movement of lithium ions between the positive electrode and the negative electrode. The negative electrode mixture layer contains a negative electrode active material represented by general formula M3Me2X7 (in the formula, M includes at least one of La and Ca; Me includes at least one of Mn, Ni, Fe, and Co; and X includes at least one of Ge, Si, Sn, and Al), and a binding agent that contains cyano groups, the ratio of the binding agent in the negative electrode mixture layer being 0.5-7.0 mass% (inclusive).

公开(公告)号：US20230100030A1

公开(公告)日：2023-03-30

申请号：US17800768

申请日：2021-02-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuko Asano ,  Yukihiro Oki ,  Nanami Takeda ,  Mitsuhiro Hibino

IPC: H01M4/38 ,  H01M10/0525

Abstract: The present invention provides a lithium ion battery which comprises a positive electrode having a positive electrode mixture layer that contains a positive electrode active material, and a negative electrode having a negative electrode mixture layer that contains a negative electrode active material, and which is charged and discharged by the movement of lithium ions between the positive electrode and the negative electrode. The negative electrode mixture layer contains a negative electrode active material represented by general formula La3(1-x)M3xNi2(1-y)Me2yX7 (wherein M contains at least one of Ca, Mg and Sr; Me contains at least one of Mn, Co, Cu and Fe; X contains at least one of Ge, Si, Sn and Al; 0.1≤x