公开(公告)号：US20230231122A1

公开(公告)日：2023-07-20

申请号：US17976456

申请日：2022-10-28

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Akio MITSUI ,  Yasunari SUGITA ,  Kenji NAGAO ,  Izuru SASAKI ,  Yasutaka TSUTSUI ,  Takaaki TAMURA ,  Hiroki KAMITAKE

IPC: H01M4/485 ,  H01M4/38 ,  H01M4/48 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0562

CPC classification number: H01M4/485 ,  H01M4/48 ,  H01M4/386 ,  H01M4/587 ,  H01M4/622 ,  H01M4/623 ,  H01M10/0562 ,  H01M10/0525

Abstract: There is provided an electrode layer for an all-solid state battery, which contains an electrode active material and a sulfide solid electrolyte, where the sulfide solid electrolyte has an average particle diameter of less than 1 µm and the electrode layer contains an imidazoline-based dispersion material.

公开(公告)号：US20240356039A1

公开(公告)日：2024-10-24

申请号：US18759052

申请日：2024-06-28

Applicant: Panasonic Holdings Corporation ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kenji NAGAO ,  Yusuke NISHIO ,  Izuru SASAKI

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/36 ,  H01M10/0525 ,  H01M10/0562

CPC classification number: H01M4/625 ,  H01M4/366 ,  H01M10/0525 ,  H01M10/0562 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2300/0068

Abstract: A positive electrode material according to the present disclosure includes a mixture of a positive electrode active material, a solid electrolyte, and a conductive material. The conductive material includes a first conductive material having an average long-axis diameter of 1 μm or more and a second conductive material having an average particle diameter of more than 23 nm and 100 nm or less. A ratio of a volume of the positive electrode active material to a sum of the volume of the positive electrode active material and a volume of the solid electrolyte is 50% or more and 90% or less. A battery according to the present disclosure includes a positive electrode including the positive electrode material, a negative electrode, and an electrolyte layer disposed between the positive electrode and the negative electrode.

公开(公告)号：US20230238515A1

公开(公告)日：2023-07-27

申请号：US18078222

申请日：2022-12-09

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  Panasonic Holdings Corporation

Inventor： Ryuto SAKAMOTO ,  Kenji NAGAO ,  Izuru SASAKI ,  Yusuke NISHIO ,  Hiroki KAMITAKE

IPC: H01M4/36 ,  H01M4/131 ,  H01M4/46 ,  H01M4/62

CPC classification number: H01M4/366 ,  H01M4/131 ,  H01M4/463 ,  H01M4/621 ,  H01M2004/028

Abstract: A positive electrode includes a positive electrode current collector, an adhesive layer, and a positive electrode layer. The positive electrode current collector, the adhesive layer, and the positive electrode layer are stacked in this order. The adhesive layer contains spherical carbon and fibrous carbon as an electrically conductive material, and contains an acrylic binder as an adhesive.

公开(公告)号：US20230299283A1

公开(公告)日：2023-09-21

申请号：US18114479

申请日：2023-02-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  Panasonic Holdings Corporation

Inventor： Kazuki MURAISHI ,  Masaru KUBOTA ,  Izuru SASAKI ,  Kenji NAGAO

IPC: H01M4/525 ,  H01M10/0562 ,  C01G53/00

CPC classification number: H01M4/525 ,  H01M10/0562 ,  C01G53/42 ,  H01M2300/0068

Abstract: In a method for producing a coated active material, a coating layer containing Nb is formed on at least a part of a surface of an active material. The method includes: transforming a slurry containing the active material and a coating solution containing Nb into droplets to obtain slurry droplets; drying the slurry droplets in a heated gas stream to obtain a precursor; and baking the precursor. When obtaining the slurry droplets, a temperature of the slurry before the slurry is transformed into droplets is 5° C. or more and less than 25° C.

公开(公告)号：US20240356040A1

公开(公告)日：2024-10-24

申请号：US18759083

申请日：2024-06-28

Applicant: Panasonic Holdings Corporation ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kenji NAGAO ,  Yusuke NISHIO ,  Izuru SASAKI

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/131 ,  H01M4/36 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/42

CPC classification number: H01M4/625 ,  H01M4/131 ,  H01M4/366 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/4235 ,  H01M2004/028 ,  H01M2300/0068

Abstract: A positive electrode material according to the present disclosure includes a mixture of a positive electrode active material, a solid electrolyte, and a conductive material. A ratio of a volume of the positive electrode active material to a sum of the volume of the positive electrode active material and a volume of the solid electrolyte is 50% or more and 90% or less. In the positive electrode material, 30≤X≤80 is satisfied, where X is a value determined by the following equation (1): X=A×B Equation (1). In the equation (1), A is a BET specific surface area (m2/g) of the conductive material, and B is a ratio (%) of a mass (g) of the conductive material to a mass (g) of the positive electrode active material.

公开(公告)号：US20240047656A1

公开(公告)日：2024-02-08

申请号：US18343878

申请日：2023-06-29

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  Panasonic Holdings Corporation

Inventor： Kazuya HASHIMOTO ,  Hiroki YABE ,  Izuru SASAKI ,  Hiroki KAMITAKE ,  Yuta SUGIMOTO

IPC: H01M4/36 ,  H01M4/1391 ,  H01M10/0562 ,  H01M4/525

CPC classification number: H01M4/366 ,  H01M4/1391 ,  H01M10/0562 ,  H01M4/525 ,  H01M2300/0094 ,  H01M2300/0071

Abstract: An electrode includes an active material layer. The active material layer includes a composite particle and an imidazoline-based compound. The composite particle includes a core particle and a covering layer. The covering layer covers at least part of a surface of the core particle. The core particle includes an active material. The covering layer includes a first layer and a second layer. At least part of the first layer is interposed between the core particle and the second layer. The first layer includes a first solid electrolyte. The second layer includes a second solid electrolyte. The first solid electrolyte is a fluoride. The second solid electrolyte is a sulfide.

公开(公告)号：US20230231184A1

公开(公告)日：2023-07-20

申请号：US17989049

申请日：2022-11-17

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  Panasonic Holdings Corporation

Inventor： Hiroki YABE ,  Izuru SASAKI ,  Kenta NAGAMINE

IPC: H01M10/0562 ,  C01B25/14

CPC classification number: H01M10/0562 ,  C01B25/14 ,  H01M2300/008 ,  C01P2006/40 ,  C01P2002/87 ,  C01P2002/72 ,  C01P2002/88

Abstract: A solid electrolyte includes lithium, phosphorus, sulfur, and halogen, in which, when the solid electrolyte is measured by TG-MS, a first peak derived from cyclic sulfur appears in a temperature range of 170° C. or higher and lower than 250° C., a second peak derived from the cyclic sulfur appears in a temperature range of 250° C. or higher and lower than 300° C., and a peak intensity P1 of the first peak is higher than a peak intensity P2 of the second peak.

公开(公告)号：US20230231124A1

公开(公告)日：2023-07-20

申请号：US18014684

申请日：2021-07-02

Applicant: Toyota Jidosha Kabushiki Kaisha ,  Panasonic Holdings Corporation

Inventor： Toru SUGIYAMA ,  Shinya SHIOTANI ,  Takeshi USAMI ,  Akinobu MIYAZAKI ,  Izuru SASAKI ,  Norihito FUJINOKI

IPC: H01M4/485 ,  H01M10/052 ,  H01M10/0562 ,  H01M4/02

CPC classification number: H01M4/485 ,  H01M10/052 ,  H01M10/0562 ,  H01M2004/028

Abstract: Disclosed is a positive electrode material having inhibited increase in heat release when exposed to high temperature. The positive electrode material of the disclosure comprises a positive electrode active material, a first solid electrolyte and a second solid electrolyte, wherein the positive electrode active material comprises a lithium-containing oxide, the first solid electrolyte comprises Li and X as constituent elements and comprises no S, X is one or more elements selected from the group consisting of F, Cl, Br and I, the second solid electrolyte comprises Li and S as constituent elements, the first solid electrolyte covers at least part of the surface of the positive electrode active material, the second solid electrolyte contacts with the positive electrode active material across the first solid electrolyte, and the average covering thickness of the first solid electrolyte is 104 nm or greater.

公开(公告)号：US20220367845A1

公开(公告)日：2022-11-17

申请号：US17878417

申请日：2022-08-01

Applicant: Panasonic Holdings Corporation ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Izuru SASAKI ,  Norihito FUJINOKI ,  Akinobu MIYAZAKI ,  Shinya SHIOTANI ,  Toru SUGIYAMA

IPC: H01M4/131 ,  H01M4/62 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0562

Abstract: A positive electrode material of the present disclosure includes a positive electrode active material, a first solid electrolyte including a sulfide solid electrolyte, and a second solid electrolyte including a halide solid electrolyte. A proportion x of a volume of the second solid electrolyte to a sum of a volume of the first solid electrolyte and the volume of the second solid electrolyte satisfies 20≤x≤95 in percentage. The proportion x satisfies, for example, 35.2≤x≤76.5 in percentage.

公开(公告)号：US20240372081A1

公开(公告)日：2024-11-07

申请号：US18777235

申请日：2024-07-18

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  Panasonic Holdings Corporation

Inventor： Izuru SASAKI ,  Yuta SUGIMOTO ,  Kazuya HASHIMOTO

IPC: H01M4/36 ,  H01M4/485 ,  H01M4/525 ,  H01M10/0562

Abstract: A battery according to one aspect of the present disclosure includes: a positive electrode; a negative electrode; and an electrolyte layer disposed between the positive electrode and the negative electrode, wherein the positive electrode includes a positive electrode active material and a first solid electrolyte material coating at least a portion of a surface of the positive electrode active material, the first solid electrolyte material includes Li, M1, and F, where M1 is at least one selected from the group consisting of Ti, Al, and Zr, and a ratio a of a capacity of the negative electrode to a capacity of the positive electrode satisfies 0.78≤a≤1.31.