公开(公告)号：US12237509B2

公开(公告)日：2025-02-25

申请号：US17619707

申请日：2020-06-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kenji Matsubara ,  Hiroshi Kawada ,  Atsushi Fukui ,  Masanobu Takeuchi

IPC: H01M4/583 ,  H01M4/02 ,  H01M10/0525 ,  H01M10/0562

Abstract: A secondary battery including a positive electrode, a negative electrode, and an electrolytic solution. The negative electrode includes a carbon material electrochemically capable of absorbing and releasing lithium ions, and a solid electrolyte covering at least part of a surface of the carbon material and having lithium ion conductivity. The solid electrolyte includes a first compound represented by a general formula: LixM1Oy, where 0.5

公开(公告)号：US12191480B2

公开(公告)日：2025-01-07

申请号：US17604144

申请日：2020-04-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kosuke Kuroda ,  Hiroshi Kawada ,  Atsushi Fukui

IPC: H01M4/36 ,  C01G53/00 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58

Abstract: A positive electrode active material for a secondary battery according to an embodiment contains: a first composite oxide component represented by general formula Liα[LixMnyCozMe(1−x−y−z)]O2 (in the formula, Me is at least one selected from among Ni Fe, Ti, Bi, Nb, W, Mo, and Ta, 0.5

公开(公告)号：US20240396017A1

公开(公告)日：2024-11-28

申请号：US18695152

申请日：2022-09-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroshi Kawada ,  Daiki Fukutome

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

Abstract: A positive electrode active material for a secondary battery includes a lithium-transition metal composite oxide, 90 at. % or more of metals other than lithium contained in the lithium-transition metal composite oxide being an element M1, the element M1 being at least one selected from the group consisting of Ni, Co, Mn, and Al, 0.05 at. % or more and 1 at. % or less of metals other than lithium contained in the lithium-transition metal composite oxide being tungsten (W), and a ratio W2/W1=α of a tungsten content W2 at a surface of the lithium-transition metal composite oxide to a tungsten content W1 in a whole lithium-transition metal composite oxide being in a range of 0

公开(公告)号：US12051796B2

公开(公告)日：2024-07-30

申请号：US17336566

申请日：2021-06-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroshi Kawada ,  Hiroyuki Matsumoto ,  Atsushi Fukui

IPC: H01M4/131 ,  H01M4/04 ,  H01M4/133 ,  H01M4/136 ,  H01M4/139 ,  H01M4/36 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/131 ,  H01M4/0428 ,  H01M4/133 ,  H01M4/136 ,  H01M4/139 ,  H01M4/366 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/587 ,  H01M4/621 ,  H01M10/0525 ,  H01M2004/027 ,  Y02E60/10 ,  Y02T10/70

Abstract: A method for producing a negative electrode for a nonaqueous electrolyte secondary battery, and a nonaqueous electrolyte secondary battery obtained therewith are disclosed. The negative electrode includes a negative electrode current collector, a negative electrode active material layer provided on the surface of the negative electrode current collector, and a first film which has lithium ion permeability and which coats at least a portion of the surface of the negative electrode active material layer and partially coats the surface of the negative electrode current collector. The first film preferably contains a first lithium compound containing an element M1, an element A1, and lithium. Herein, M1 is at least one selected from the group consisting of P, Si, B, V, Nb, W, Ti, Zr, Al, Ba, La, and Ta; and A1 is at least one selected from the group consisting of F, S, O, N, and Br.

公开(公告)号：US20240145680A1

公开(公告)日：2024-05-02

申请号：US18273380

申请日：2022-01-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akiko Murata ,  Hiroshi Kawada

IPC: H01M4/36 ,  C01G23/00 ,  C01G53/00 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58

CPC classification number: H01M4/366 ,  C01G23/002 ,  C01G53/50 ,  H01M4/505 ,  H01M4/525 ,  H01M4/582 ,  H01M2004/028

Abstract: Provided is an active material that contributes to improved battery rate characteristics. This active material for nonaqueous electrolyte secondary batteries contains a core capable of reversible Li storage/release and contains a compound attached to the surface of the core. The compound is represented by the general formula M1aM2Fb (0.1≤a≤2.2, 2≤b≤6, M1 is at least one element selected from the group consisting of Li, K, and Na, and M2 is at least one element selected from the group consisting of transition metals and Al, Si, B, P, Sn, Ge, Sb, Bi, Mg, Ca, and Sr).

公开(公告)号：US20240063384A1

公开(公告)日：2024-02-22

申请号：US18267960

申请日：2021-12-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroshi Kawada

IPC: H01M4/525 ,  H01M4/36 ,  H01M10/052 ,  H01M4/58 ,  H01M4/38

CPC classification number: H01M4/525 ,  H01M4/364 ,  H01M10/052 ,  H01M4/58 ,  H01M4/386 ,  H01M2004/028

Abstract: This positive electrode active material contains a lithium metal composite oxide which is represented by general formula xLiyNizM1-zO2-(1−x)LiwNizM1-zO2 (wherein 0.1

公开(公告)号：US11870053B2

公开(公告)日：2024-01-09

申请号：US16576214

申请日：2019-09-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takuya Sadakane ,  Hiroshi Kawada ,  Atsushi Fukui

IPC: H01M4/133 ,  H01M4/583 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0568 ,  H01M4/02 ,  H01M4/1393

CPC classification number: H01M4/133 ,  H01M4/1393 ,  H01M4/583 ,  H01M4/625 ,  H01M10/0525 ,  H01M10/0568 ,  H01M2004/027

Abstract: A secondary-battery negative electrode includes: a negative electrode collector; and a negative electrode active material layer provided on a surface of the negative electrode collector, and the negative electrode active material layer includes active material particles and amorphous carbon which covers at least parts of surfaces of the active material particles. At least a part of a surface of the amorphous carbon is covered with a film having a lithium ion permeability, the film contains an element M, and the element M is at least one selected from the group consisting of P, Si, B, V, Nb, W, Ti, Zr, Al, Ba, La, and Ta.

公开(公告)号：US20210296632A1

公开(公告)日：2021-09-23

申请号：US17336566

申请日：2021-06-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroshi Kawada ,  Hiroyuki Matsumoto ,  Atsushi Fukui

IPC: H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/04 ,  H01M4/587 ,  H01M4/36 ,  H01M4/139 ,  H01M4/58 ,  H01M4/133 ,  H01M4/136 ,  H01M4/485

Abstract: A method for producing a negative electrode for a nonaqueous electrolyte secondary battery, and a nonaqueous electrolyte secondary battery obtained therewith are disclosed. The negative electrode includes a negative electrode current collector, a negative electrode active material layer provided on the surface of the negative electrode current collector, and a first film which has lithium ion permeability and which coats at least a portion of the surface of the negative electrode active material layer and partially coats the surface of the negative electrode current collector. The first film preferably contains a first lithium compound containing an element M1, an element A1, and lithium. Herein, M1 is at least one selected from the group consisting of P, Si, B, V, Nb, W, Ti, Zr, Al, Ba, La, and Ta; and A1 is at least one selected from the group consisting of F, S, O, N, and Br.

公开(公告)号：US20210057722A1

公开(公告)日：2021-02-25

申请号：US16968950

申请日：2019-01-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroshi Kawada ,  Atsushi Fukui

IPC: H01M4/1391 ,  H01M4/131 ,  H01M4/62

Abstract: A positive electrode for a secondary battery includes a positive electrode current collector and a positive electrode active material layer that contains a positive electrode active material particle and that is disposed on the surface of the positive electrode current collector. The positive electrode active material particle includes a positive electrode active material particle, a first coating that contains oxide X of metal element M1 and that is attached to the surface of the positive electrode active material particle, and a second coating having lithium-ion permeability that is attached to the surface of the first coating. The second coating contains oxide Y represented by LixM2Oy (0.5≤x

公开(公告)号：US20190214630A1

公开(公告)日：2019-07-11

申请号：US16357517

申请日：2019-03-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroshi Kawada ,  Hiroyuki Matsumoto ,  Atsushi Fukui

IPC: H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/62

Abstract: A negative electrode for a nonaqueous electrolyte secondary battery includes a negative electrode current collector, a negative electrode active material layer provided on the surface of the negative electrode current collector, and a first film which has lithium ion permeability and which coats at least a portion of the surface of the negative electrode active material layer and partially coats the surface of the negative electrode current collector. The first film preferably contains a first lithium compound containing an element M1, an element A1, and lithium. Herein, M1 is at least one selected from the group consisting of P, Si, B, V, Nb, W, Ti, Zr, Al, Ba, La, and Ta; and A1 is at least one selected from the group consisting of F, S, O, N, and Br.