公开(公告)号：US20250029987A1

公开(公告)日：2025-01-23

申请号：US18905132

申请日：2024-10-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KUNIHIKO MINEYA ,  TADAAKI MATSUMURA

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/485

Abstract: A composite active material particle includes an oxide phase containing an oxide and multiple active material domains containing an active material and dispersed in the oxide phase. When a region occupying a surface layer portion of the composite active material particle is defined as a first region, and a region located more inward than the first region is defined as a second region, the first region includes the oxide phase, the second region includes the oxide phase and the multiple active material domains, and the abundance of oxygen in the first region is higher than the abundance of oxygen in the second region.

公开(公告)号：US20250046802A1

公开(公告)日：2025-02-06

申请号：US18924334

申请日：2024-10-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SHUJI ITO ,  TADAAKI MATSUMURA

IPC: H01M4/38 ,  H01M4/02 ,  H01M10/0562

Abstract: The battery of the present disclosure includes: a positive electrode; a negative electrode; and a solid electrolyte layer located between the positive electrode and the negative electrode. The positive electrode contains, as a positive electrode active material, a metal oxide containing lithium, and the negative electrode includes a negative electrode current collector and a negative electrode active material layer located between the negative electrode current collector and the solid electrolyte layer. The negative electrode active material layer contains, as a negative electrode active material, silicon with lithium pre-stored therein. The atomic ratio of lithium to silicon in the negative electrode active material layer in a fully charged state is less than or equal to 3.5.

公开(公告)号：US20200350626A1

公开(公告)日：2020-11-05

申请号：US16931113

申请日：2020-07-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TADAAKI MATSUMURA ,  IZURU SASAKI ,  YUTA SUGIMOTO

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/525 ,  H01M4/505

Abstract: Provided is a cathode material including a cathode active material; a coating layer which coats at least a part of a surface of the cathode active material, and which includes a first solid electrolyte material; and a second solid electrolyte material. The first solid electrolyte material includes Li, M, and X; however, does not include sulfur. M includes at least one element selected from the group consisting of metalloid elements and metal elements other than Li. X includes at least one element selected from the group consisting of Cl and Br.

公开(公告)号：US20250046781A1

公开(公告)日：2025-02-06

申请号：US18924862

申请日：2024-10-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SHUJI ITO ,  TADAAKI MATSUMURA

IPC: H01M4/04 ,  H01M4/02 ,  H01M4/38 ,  H01M10/058 ,  H01M10/44

Abstract: The production method for a battery of the present disclosure includes: depositing silicon on a negative electrode current collector to produce a negative electrode; producing a laminated body including the negative electrode, a solid electrolyte layer, and a positive electrode in this order; and charging the laminated body to cause metallic lithium to precipitate in the negative electrode.
The battery of the present disclosure includes a positive electrode, a negative electrode, and a solid electrolyte layer located between the positive electrode and the negative electrode. The positive electrode contains a positive electrode active material containing lithium. The negative electrode contains a negative electrode active material containing metallic lithium and silicon. The ratio Ns/P of the charge capacity Ns of the silicon per unit area of the negative electrode to the charge capacity P per unit area of the positive electrode satisfies 0.3≤Ns/P≤0.96.

公开(公告)号：US20250029993A1

公开(公告)日：2025-01-23

申请号：US18905124

申请日：2024-10-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KUNIHIKO MINEYA ,  TADAAKI MATSUMURA

IPC: H01M4/485 ,  H01M4/02 ,  H01M4/04 ,  H01M10/0562

Abstract: A composite active material particle includes an oxide phase containing an oxide, multiple active material domains containing an active material and dispersed in the oxide phase, and at least one first solid electrolyte having a composition different from the composition of the oxide. The first solid electrolyte covers at least part of the surface of a base particle composed of the oxide phase and the multiple active material domains.

公开(公告)号：US20240128437A1

公开(公告)日：2024-04-18

申请号：US18542602

申请日：2023-12-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SHUJI ITO ,  TADAAKI MATSUMURA

IPC: H01M4/134 ,  H01M4/04 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0585

CPC classification number: H01M4/134 ,  H01M4/0404 ,  H01M4/0445 ,  H01M4/1395 ,  H01M4/386 ,  H01M4/625 ,  H01M10/0585 ,  H01M2004/027

Abstract: A battery includes a positive electrode, a negative electrode, and an electrolyte layer located between the positive electrode and the negative electrode. The negative electrode includes a negative electrode current collector and a negative electrode active material layer located between the negative electrode current collector and the electrolyte layer. The negative electrode active material layer includes a plurality of columnar bodies. The columnar bodies include silicon and a filler including a carbon material. The filler is embedded in the columnar bodies.

公开(公告)号：US20240120472A1

公开(公告)日：2024-04-11

申请号：US18542605

申请日：2023-12-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SHUJI ITO ,  TADAAKI MATSUMURA ,  YUSUKE ITO

IPC: H01M4/38 ,  H01M4/04 ,  H01M4/62 ,  H01M4/66 ,  H01M10/052 ,  H01M10/0562

CPC classification number: H01M4/386 ,  H01M4/0404 ,  H01M4/0421 ,  H01M4/626 ,  H01M4/661 ,  H01M10/052 ,  H01M10/0562 ,  H01M2004/027

Abstract: A battery includes a positive electrode, a negative electrode, and an electrolyte layer located between the positive electrode and the negative electrode. The negative electrode includes a negative electrode current collector and a negative electrode active material layer located between the negative electrode current collector and the electrolyte layer. The negative electrode active material layer includes a plurality of columnar bodies. The columnar bodies include silicon and a filler including nickel. The filler is embedded in the columnar bodies.

公开(公告)号：US20240105915A1

公开(公告)日：2024-03-28

申请号：US18530339

申请日：2023-12-06

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KUNIHIKO MINEYA ,  TADAAKI MATSUMURA

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/58 ,  H01M10/0525

CPC classification number: H01M4/364 ,  H01M4/386 ,  H01M4/5825 ,  H01M10/0525 ,  H01M2004/027

Abstract: A composite active material particle of the present disclosure includes a lithium silicate phase, a plurality of silicon particles dispersed in the lithium silicate phase, and an electron-conductive material dispersed in the lithium silicate phase, the electron-conductive material including a carbon material.

公开(公告)号：US20240047648A1

公开(公告)日：2024-02-08

申请号：US18487160

申请日：2023-10-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUSUKE ITO ,  SHUJI ITO ,  TADAAKI MATSUMURA

IPC: H01M4/134 ,  H01M4/38 ,  H01M4/66 ,  H01M10/0562 ,  H01M10/0585 ,  H01M4/1395 ,  H01M4/04

CPC classification number: H01M4/134 ,  H01M4/386 ,  H01M4/661 ,  H01M10/0562 ,  H01M10/0585 ,  H01M4/1395 ,  H01M4/0404 ,  H01M4/0471 ,  H01M2004/027

Abstract: A battery according to an aspect of the present disclosure includes a positive electrode, a negative electrode, and an electrolyte layer located between the positive electrode and the negative electrode. The negative electrode includes a negative electrode current collector and a negative electrode active material layer located between the negative electrode current collector and the electrolyte layer. The negative electrode active material layer has a plurality of columnar bodies containing silicon as a primary component. Young's modulus of the negative electrode active material layer is less than or equal to 25 GPa.

公开(公告)号：US20230361426A1

公开(公告)日：2023-11-09

申请号：US18355436

申请日：2023-07-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KUNIHIKO MINEYA ,  TADAAKI MATSUMURA

IPC: H01M50/44 ,  H01M10/0525 ,  H01M50/417 ,  H01M4/38 ,  H01M50/449

CPC classification number: H01M50/44 ,  H01M10/0525 ,  H01M50/417 ,  H01M4/386 ,  H01M50/449 ,  H01M2004/027

Abstract: A battery includes a first electrode, a second electrode, and a solid electrolyte layer located between the first electrode and the second electrode and including a fibrous material, wherein the solid electrolyte layer includes a first solid electrolyte layer, and a second solid electrolyte layer located between the first solid electrolyte layer and the second electrode, and the content ratio of the fibrous material in the second solid electrolyte layer is higher than the content ratio of the fibrous material in the first solid electrolyte layer.