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：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.