公开(公告)号：US20250015363A1

公开(公告)日：2025-01-09

申请号：US18291342

申请日：2022-06-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuhiro Iida ,  Hideharu Takezawa

IPC: H01M10/26 ,  H01M4/38 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0565

Abstract: This lithium ion secondary battery has a negative electrode, a positive electrode, an aqueous electrolyte containing a lithium salt, and a separation layer arranged between the negative electrode and the positive electrode. The aqueous electrolyte is in contact with the positive electrode, and the separation layer includes a non-aqueous solid electrolyte A in which a matrix polymer, the lithium salt and a hydrophobic ionic liquid are compounded.

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：US20220376249A1

公开(公告)日：2022-11-24

申请号：US17763074

申请日：2020-07-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuhiro Iida ,  Masanobu Takeuchi

IPC: H01M4/587 ,  H01M10/0525 ,  H01M10/0569

Abstract: A secondary battery according to the present invention comprises a positive electrode, a negative electrode and an electrolyte solution; the electrolyte solution contains a lithium salt and a solvent containing water; the negative electrode comprises a negative electrode active material that contains a carbon material; with respect to the carbon material, the peak intensity ratio (D/G value) of the D band to the G band in a Raman spectrum as obtained by Raman spectroscopy is from 0.05 to 0.7; a coating film is formed on the surface of the carbon material; and with respect to the coating film, if P1 is the peak intensity of the 1s electron orbital of an F atom at around the binding energy of 685 eV and P2 is the peak intensity of the 1s electron orbital of an O atom at around the binding energy of 532 eV in an XPS spectrum as determined by X-ray photoelectron spectroscopy, the ratio of the peak intensity P1 to the peak intensity P2, namely the value of P1/P2 is from 1.0 to 3.0.

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：US20210344008A1

公开(公告)日：2021-11-04

申请号：US17259722

申请日：2019-02-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takayuki Nakatsutsumi ,  Kazuhiro Iida ,  Atsushi Fukui

IPC: H01M4/525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M10/058 ,  H01M4/131 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/583

Abstract: A secondary battery includes a positive electrode containing a positive electrode active material; a negative electrode; and an electrolyte. The electrolyte contains a solvent, a lithium salt dissolved in the solvent, and a film forming compound. The film forming compound includes fluorine and an unsaturated bond between carbons. A surface of the positive electrode active material is at least partially covered with a film containing lithium, oxygen, carbon, and fluorine.

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：US20200020987A1

公开(公告)日：2020-01-16

申请号：US16582141

申请日：2019-09-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Naoya Morisawa ,  Kazuhiro Iida ,  Masaki Deguchi ,  Atsushi Fukui

IPC: H01M10/0569 ,  H01M4/1315

Abstract: A nonaqueous electrolyte solution according to one embodiment of the present disclosure contains a lithium salt and a nonaqueous solvent; the nonaqueous solvent contains fluoroethylene carbonate and a chain carboxylic acid ester having a dielectric constant of 6.0 or more; the lithium salt contains LiPO2F2 and LiSO3F; and the respective concentrations of LiPO2F2 and LiSO3F in the non-aqueous solvent are 0.15 mol/L or more.

公开(公告)号：US20240154162A1

公开(公告)日：2024-05-09

申请号：US18283093

申请日：2021-11-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuhiro Iida ,  Hideharu Takezawa

IPC: H01M10/0565 ,  H01M10/0525

CPC classification number: H01M10/0565 ,  H01M10/0525 ,  H01M2300/0085

Abstract: This lithium ion secondary battery comprises: a negative electrode; a positive electrode; a nonaqueous electrolyte including a lithium salt; an aqueous electrolyte including a lithium salt; and a partition wall layer disposed between the negative electrode and the positive electrode. The aqueous electrolyte is in contact with the positive electrode, and the nonaqueous electrolyte is in contact with the negative electrode. The partition wall layer includes a nonaqueous solid electrolyte in which a matrix polymer and a nonaqueous electrolytic solution are formed into a complex. The matrix polymer includes a copolymer of acrylonitrile and at least one of methyl methacrylate, methyl acrylate, and vinyl acetate.

公开(公告)号：US20230291005A1

公开(公告)日：2023-09-14

申请号：US18018339

申请日：2021-06-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuhiro Iida ,  Masanobu Takeuchi

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583

CPC classification number: H01M10/0562 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M2004/027

Abstract: This lithium ion secondary battery includes: a negative electrode; a positive electrode; a non-aqueous electrolyte which is water repellant and contains a lithium salt; and an aqueous solid electrolyte which contains a lithium salt. The aqueous solid electrolyte contacts only the positive electrode, from between the negative electrode and the positive electrode. The non-aqueous electrolyte contacts at least the negative electrode, from between the negative electrode and the positive electrode.

公开(公告)号：US11539079B2

公开(公告)日：2022-12-27

申请号：US16580194

申请日：2019-09-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuhiro Iida ,  Takanobu Chiga ,  Naoya Morisawa ,  Atsushi Fukui

IPC: H01M10/0569 ,  H01M10/052 ,  H01M6/16

Abstract: A nonaqueous electrolyte includes a lithium salt and a nonaqueous solvent in which the lithium salt is dissolved. The nonaqueous solvent includes a fluorinated chain carboxylate ester and a dicarbonyl compound having two carbonyl groups in the molecule. The dicarbonyl compound is at least one selected from the group consisting of esters and acid anhydrides and has not more than three atoms between the two carbonyl groups.