公开(公告)号：US20230077974A1

公开(公告)日：2023-03-16

申请号：US17796229

申请日：2020-12-01

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kenji Matsubara ,  Masanobu Takeuchi

IPC: H01M10/26 ,  H01M4/583

Abstract: A negative electrode active material for aqueous secondary batteries, said negative electrode active material being applied to an aqueous secondary battery that uses an aqueous electrolyte solution containing water and a lithium salt, wherein: the negative electrode active material contains graphite; the graphite has a C—F bond group on the surface; if I688eV is the peak intensity at around 688 eV ascribed to a C—F bond and I284eV is the peak intensity at around 284 eV ascribed to a C—C bond in the XPS spectrum of the graphite as obtained by X-ray photoelectron spectroscopy, the ratio of the peak intensity I688eV to the peak intensity I284eV (namely, the value of I688eV/I284eV ) is from 0.1 to 7; and the BET specific surface area is from 0.5 m2/g to 3.9 m2/g.

公开(公告)号：US20210135277A1

公开(公告)日：2021-05-06

申请号：US16640116

申请日：2018-09-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Nobuhiko Hojo ,  Hiroyuki Matsumoto ,  Kenji Matsubara ,  Hiroshi Kawada ,  Atsushi Fukui

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

Abstract: An aqueous rechargeable battery includes: a positive electrode including a positive electrode current collector and a positive electrode active material layer provided on a surface of the positive electrode current collector; a negative electrode including a negative electrode current collector and a negative electrode active material layer provided on a surface of the negative electrode current collector; and an aqueous electrolyte solution containing a lithium salt and water. The positive electrode active material layer contains one or more positive electrode active materials and one or more lithium ion-conducting solid electrolytes; and the positive electrode active materials include a lithium transition metal oxide.

公开(公告)号：US11646446B2

公开(公告)日：2023-05-09

申请号：US16961007

申请日：2018-11-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kenji Matsubara ,  Nobuhiko Hojo ,  Hiroyuki Matsumoto ,  Takayuki Nakatsutsumi ,  Kazuhiro Iida ,  Atsushi Fukui

IPC: H01M4/00 ,  H01M10/0566 ,  H01M4/485 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/26

CPC classification number: H01M10/0566 ,  H01M4/485 ,  H01M4/661 ,  H01M10/0525 ,  H01M10/26 ,  H01M2300/0002

Abstract: A rechargeable battery including a positive electrode, a negative electrode, and an electrolyte solution is provided. The electrolyte solution contains water and one or more lithium salts, and the lithium salts include lithium fluorophosphate.

公开(公告)号：US20220173434A1

公开(公告)日：2022-06-02

申请号：US17442031

申请日：2020-01-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kenji Matsubara ,  Kazuhiro Iida ,  Masanobu Takeuchi ,  Atsushi Fukui

IPC: H01M10/0567 ,  H01M4/583 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0525

Abstract: A secondary battery which comprises a positive electrode, a negative electrode, and an electrolytic solution, wherein the electrolytic solution comprises water, a lithium salt, and an additive, the additive including at least one of alkaline-earth metal salts, dicarboxylic acids, carboxylic anhydrides, and organic carbonates, and the negative electrode comprises a negative active material, the negative active material having a silane coupling agent adherent to the surface thereof.

公开(公告)号：US20210083324A1

公开(公告)日：2021-03-18

申请号：US16961007

申请日：2018-11-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kenji Matsubara ,  Nobuhiko Hojo ,  Hiroyuki Matsumoto ,  Takayuki Nakatsutsumi ,  Kazuhiro Iida ,  Atsushi Fukui

IPC: H01M10/0566 ,  H01M10/26 ,  H01M4/485 ,  H01M4/66 ,  H01M10/0525

Abstract: A rechargeable battery including a positive electrode, a negative electrode, and an electrolyte solution is provided. The electrolyte solution contains water and one or more lithium salts, and the lithium salts include lithium fluorophosphate.

公开(公告)号：US20230058362A1

公开(公告)日：2023-02-23

申请号：US17795680

申请日：2020-12-01

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kenji Matsubara ,  Masanobu Takeuchi

IPC: H01M4/583 ,  H01M10/0568 ,  H01M10/0569

Abstract: Provided is a negative electrode active material that is applied in an aqueous secondary battery in which is used an aqueous electrolyte containing water and a lithium salt. The negative electrode active material contains hardly-graphitizable carbon, and the hardly-graphitizable carbon has a C—F bond group on the surface thereof. In an XPS spectrum obtained through X-ray photoelectron spectroscopy, when the peak intensity near 688 eV originating from C—F bonds of the hardly-graphitizable carbon is denoted by I688eV, the peak intensity near 284 eV originating from C—C bonds is denoted by I284eV, a ratio of the peak intensity I688eV to the peak intensity I284eV (value of I688eV/I284eV) is denoted by X, and the BET specific surface area (m2/g) is denoted by Y, the X and Y satisfy Y

公开(公告)号：US20220359871A1

公开(公告)日：2022-11-10

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 ,  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：US20220173399A1

公开(公告)日：2022-06-02

申请号：US17439996

申请日：2020-01-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kenji Matsubara ,  Nobuhiko Hojo ,  Masanobu Takeuchi ,  Atsushi Fukui

IPC: H01M4/62 ,  H01M10/0568 ,  H01M4/587 ,  H01M4/133 ,  H01M10/0525

Abstract: A secondary battery according to the present invention is provided with a positive electrode, a negative electrode and an electrolyte solution; the electrolyte solution contains water and a lithium salt; the negative electrode contains a negative electrode active material; a silane coupling agent, which is reductively decomposed at a potential that is higher than the reductive decomposition potential of water, is adhered to the surface of the negative electrode active material; and the silane coupling agent contains fluorine as a constituent element.

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：US11817561B2

公开(公告)日：2023-11-14

申请号：US17054890

申请日：2019-02-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kenji Matsubara ,  Nobuhiko Hojo ,  Hiroyuki Matsumoto ,  Atsushi Fukui

IPC: H01M10/36

CPC classification number: H01M10/36 ,  H01M2300/0002

Abstract: An electrolyte solution according to one aspect of the present disclosure comprises water, a lithium salt, and a polycarboxylic acid having two or more carboxylic acid groups. A secondary battery according to one aspect of the present disclosure comprises a positive electrode, a negative electrode, and the electrolyte solution.