公开(公告)号：US20210359304A1

公开(公告)日：2021-11-18

申请号：US17390797

申请日：2021-07-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroki HAYASHI ,  Nao MATSUMURA ,  Yasuyuki ITO ,  Susumu NOMOTO ,  Makoto AKUTSU ,  Tougo ENDOU

IPC: H01M4/583 ,  H01G11/86 ,  H01M4/1399 ,  H01G11/06 ,  H01G11/48 ,  H01M4/36 ,  H01M4/60 ,  H01G11/24 ,  H01M50/44 ,  H01M50/531 ,  H01M50/429 ,  H01M4/04 ,  H01M4/137 ,  H01M4/1393 ,  H01M4/66 ,  H01M10/0525

Abstract: A positive electrode active material for an electrochemical device has a fiber shape or a grain-aggregate shape. The positive electrode active material includes an inner core part having a fiber shape or a grain-aggregate shape, and a superficial part covering at least part of the inner core part. The inner core part contains a first conductive polymer, and the superficial part contains a second conductive polymer that is different from the first conductive polymer.

公开(公告)号：US20250166933A1

公开(公告)日：2025-05-22

申请号：US18841607

申请日：2023-02-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Nao MATSUMURA ,  Hideki SHIMAMOTO ,  Hiroki HAYASHI ,  Hideo SAKATA

IPC: H01G11/28 ,  H01G11/06 ,  H01G11/48 ,  H01M4/02 ,  H01M4/1399 ,  H01M4/60 ,  H01M4/62 ,  H01M10/0525

Abstract: An electrochemical device disclosed includes a positive electrode, a negative electrode, and a lithium ion conductive electrolyte. The positive electrode includes a positive electrode mixture layer containing a positive electrode active material. The positive electrode active material contains particles of a conductive polymer to and from which anions are reversibly dopable and de-dopable. A ratio V1/V0 of a volume V1 of pores with a pore size of 0.2 μm or less to a volume V0 of all pores is 0.40 or more when a pore distribution of the positive electrode is measured using a mercury porosimeter.

公开(公告)号：US20220285104A1

公开(公告)日：2022-09-08

申请号：US17553035

申请日：2021-12-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Susumu NOMOTO ,  Yasuyuki ITO ,  Nao MATSUMURA ,  Hiroki HAYASHI ,  Makoto AKUTSU ,  Tougo ENDOU

IPC: H01G11/50 ,  H01G11/06 ,  H01G11/48 ,  H01G11/86 ,  H01M4/1399 ,  H01M4/137 ,  H01M4/60 ,  H01M10/0566 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/058

Abstract: An electrochemical device includes a positive electrode having a positive electrode material layer containing a conductive polymer doped with a first anion and a second anion, a negative electrode having a negative electrode material layer storing and releasing lithium ions, and a nonaqueous electrolytic solution having lithium ionic conductivity. The second anion is more easily dedoped from the conductive polymer than the first anion. At an end period of charge of the electrochemical device, a number of moles M1 of the first anion and a number of moles M2 of the second anion respectively doped in the conductive polymer satisfy a relationship of M1 M4.

公开(公告)号：US20220230816A1

公开(公告)日：2022-07-21

申请号：US17609543

申请日：2020-05-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hideki SHIMAMOTO ,  Nao MATSUMURA

IPC: H01G11/48 ,  H01G11/06 ,  H01G11/26 ,  H01G11/52

Abstract: An electrochemical device, including: a positive electrode including a positive electrode core material, and a positive electrode material layer supported on the positive electrode core material; a negative electrode including a negative electrode core material, and a negative electrode material layer supported on the negative electrode core material; a separator placed between the positive electrode and the negative electrode; and an electrolyte containing lithium ions. The positive electrode material layer contains a conductive polymer. The positive electrode has a positive electrode non-facing portion where the positive electrode material layer does not face the negative electrode material layer, the positive electrode non-facing portion being larger in area than a negative electrode non-facing portion where the negative electrode material layer does not face the positive electrode material layer in the negative electrode.

公开(公告)号：US20210376325A1

公开(公告)日：2021-12-02

申请号：US17400910

申请日：2021-08-12

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Kiyohiro ISII ,  Takuma ASARI ,  Chiho NOBUMORI ,  Yasuyuki ITO ,  Nao MATSUMURA

IPC: H01M4/60 ,  H01G11/06 ,  H01G11/48 ,  H01G11/50 ,  H01M4/137 ,  H01M4/1399 ,  H01G11/86 ,  H01M10/0566 ,  H01M10/058 ,  H01M10/052 ,  H01G11/82 ,  H01G11/58 ,  H01G11/66 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0585

Abstract: A method for manufacturing an electrochemical device includes the following steps: a step of preparing a positive electrode, the positive electrode including a first current collector and a positive electrode layer containing a conductive polymer; a step of preparing a negative electrode, the negative electrode including a second current collector and a negative electrode layer; and a step of sealing the positive electrode, the negative electrode, and an electrolytic solution in an exterior body. The step of preparing the positive electrode includes a step of holding the positive electrode in depressurized atmosphere and then introducing gas containing CO2 as a primary component into the depressurized atmosphere.