公开(公告)号：US20210119261A1

公开(公告)日：2021-04-22

申请号：US16975169

申请日：2019-03-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： HIDEO SAKATA ,  YUSUKE NAKAMURA ,  MASATOSHI TAKESHITA ,  MOTOHIRO SAKATA

IPC: H01M10/0569 ,  H01M4/60 ,  H01M10/0525

Abstract: An electrochemical device includes a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, and an electrolytic solution. The positive electrode active material includes a conductive polymer, and the electrolytic solution includes a lithium salt and a nonaqueous solvent. The nonaqueous solvent contains a first solvent and a second solvent. The first solvent includes γ-butyrolactone, and the second solvent includes at least one selected from the group consisting of an unsaturated cyclic carbonate ester and a cyclic carboxylic acid anhydride.

公开(公告)号：US20210407741A1

公开(公告)日：2021-12-30

申请号：US17293525

申请日：2019-12-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： MOTOHIRO SAKATA ,  NAO MATSUMURA ,  MASATOSHI TAKESHITA

IPC: H01G11/48 ,  H01M4/60 ,  H01G11/52 ,  H01G11/54

Abstract: An electrochemical device electrode includes a conductive polymer as an active material. The conductive polymer has a grain shape, and an intensity distribution pattern obtained by X-ray diffraction measurement with respect to the conductive polymer has a first peak in which a diffraction angle 2θ ranges from 18° to 21°, inclusive, and a second peak in which a diffraction angle 2θ ranges from 24° to 26°, inclusive.

公开(公告)号：US20210066717A1

公开(公告)日：2021-03-04

申请号：US16977153

申请日：2019-03-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUSUKE NAKAMURA ,  MOTOHIRO SAKATA ,  HIDEO SAKATA ,  MASATOSHI TAKESHITA

IPC: H01M4/587 ,  H01M10/0567 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/60 ,  H01G11/52 ,  H01G11/48 ,  H01G11/32 ,  H01G11/64

Abstract: An electrochemical device includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an electrolytic solution. The positive electrode includes a conductive polymer, and the negative electrode includes a negative electrode material. The negative electrode material contains a graphite material, and an interlayer distance (d002) of the graphite material ranges from 0.336 nm to 0.338 nm, inclusive.

公开(公告)号：US20210391121A1

公开(公告)日：2021-12-16

申请号：US17271271

申请日：2019-09-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： HIROKI HAYASHI ,  MOTOHIRO SAKATA ,  NAO MATSUMURA ,  MASATOSHI TAKESHITA

IPC: H01G11/06 ,  H01G11/48 ,  H01M10/0569 ,  H01M4/133 ,  H01M10/0525

Abstract: An electrochemical device includes a pair of electrodes and an electrolytic solution. At least one of the pair of electrodes includes an electrode current collector and an electrode material layer supported by the electrode current collector. The electrode material layer includes at least a conductive polymer. A log differential pore volume distribution of the electrode material layer has at least one peak in a range of a pore diameter of more than or equal to 50 nm.

公开(公告)号：US20230245836A1

公开(公告)日：2023-08-03

申请号：US18004612

申请日：2021-07-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： MASATOSHI TAKESHITA ,  HIROMI OZAWA ,  YIHAN ZHANG ,  HITOSHI FUKUI

IPC: H01G9/025 ,  H01G9/048 ,  H01G9/15

CPC classification number: H01G9/025 ,  H01G9/048 ,  H01G9/15

Abstract: A solid electrolytic capacitor element includes an anode body, a dielectric layer disposed on a surface of the anode body, and a cathode part covering at least a part of the dielectric layer are provided. The cathode part includes a solid electrolyte layer covering the at least the part of the dielectric layer. The solid electrolyte layer contains a first polymer and a second polymer component. The first polymer component includes a monomer unit corresponding to a thiophene compound. The second polymer component includes a polymer anion. A Raman spectrum of a surface layer in the solid electrolyte layer has a peak characteristic for the first polymer component.

公开(公告)号：US20220415581A1

公开(公告)日：2022-12-29

申请号：US17756542

申请日：2020-12-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： NAOKI UMAHASHI ,  MASATOSHI TAKESHITA ,  HITOSHI FUKUI ,  MAKOTO NAGASHIMA

IPC: H01G9/028 ,  H01G9/15

Abstract: An electrolytic capacitor includes at least one capacitor element. The at least one capacitor element includes: an anode body including an anode lead portion, and a cathode forming portion; a dielectric layer disposed on at least a surface of the cathode forming portion of the anode body; and a cathode part covering at least a part of the dielectric layer. The cathode part includes a solid electrolyte layer that contains a conductive polymer, and covers at least a part of the dielectric layer. A ratio T1/T2 of a thickness T1 of the solid electrolyte layer formed at a corner portion of the anode body to a thickness T2 of the solid electrolyte layer formed at a center portion of a principal surface of the anode body is in a range from 0.8 to 1.7, inclusive, in a cross section of the at least one capacitor element.

公开(公告)号：US20200035994A1

公开(公告)日：2020-01-30

申请号：US16491183

申请日：2018-03-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： NAO MATSUMURA ,  MASATOSHI TAKESHITA

IPC: H01M4/137 ,  H01M4/60 ,  H01G11/28 ,  H01G11/48

Abstract: An electrochemical device includes a positive electrode and a negative electrode. The positive electrode for the electrochemical device includes a positive current collector, and an active layer including a conductive polymer disposed on the positive current collector. The conductive polymer contains a polyaniline or a derivative of polyaniline. An infrared absorption spectrum of the active layer exhibits a peak derived from a carbonyl group. The peak derived from the carbonyl group appears, for example, in a range from 1600 cm−1 to 1700 cm−1, inclusive.