公开(公告)号：US20180261403A1

公开(公告)日：2018-09-13

申请号：US15977001

申请日：2018-05-11

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 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/058 ,  H01M4/60 ,  H01M4/1399

CPC classification number: H01G11/50 ,  H01G11/06 ,  H01G11/48 ,  H01G11/60 ,  H01G11/62 ,  H01G11/86 ,  H01M4/137 ,  H01M4/1399 ,  H01M4/60 ,  H01M4/606 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0566 ,  H01M10/0569 ,  H01M10/058 ,  H01M2004/028 ,  H01M2300/0037 ,  Y02E60/13

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：US20240170670A1

公开(公告)日：2024-05-23

申请号：US18548894

申请日：2022-03-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： NOBUHIRO SHIMAMURA ,  KENICHI NAGAMITSU ,  TOUGO ENDOU

IPC: H01M4/587 ,  H01M4/02 ,  H01M4/62 ,  H01M10/42

CPC classification number: H01M4/587 ,  H01M4/622 ,  H01M10/4235 ,  H01M2004/027 ,  H01M2300/0065

Abstract: The electrochemical device includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The negative electrode includes a negative electrode mixture layer, the negative electrode mixture layer contains a binding agent and a negative electrode active material reversibly doped with a lithium ion. The negative electrode active material contains non-graphitizable carbon. An average particle size of the binding agent is more than or equal to 140 nm. In a discharged state, a potential of the negative electrode is less than or equal to +0.2 V with respect to a potential of a Li counter electrode.

公开(公告)号：US20180374661A1

公开(公告)日：2018-12-27

申请号：US16115568

申请日：2018-08-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TOUGO ENDOU ,  YASUYUKI ITO ,  SUSUMU NOMOTO ,  NAO MATSUMURA ,  HIROKI HAYASHI ,  MAKOTO AKUTSU

IPC: H01G11/86 ,  H01M10/0585 ,  H01M10/0587 ,  H01M2/26 ,  H01M4/1399 ,  H01M4/66

Abstract: A method for manufacturing a positive electrode for a power storage device includes the steps of: preparing a current collector that includes a first region and a second region on a surface of the current collector, the first region having a carbon layer formed on the surface, the second region having the surface exposed; and forming a conductive polymer layer selectively on a surface of the carbon layer by immersing the current collector in an electrolytic solution containing a raw material monomer and then conducting electrolytic polymerization of the raw material monomer.

公开(公告)号：US20180323432A1

公开(公告)日：2018-11-08

申请号：US16037011

申请日：2018-07-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： HIROKI HAYASHI ,  NAO MATSUMURA ,  YASUYUKI ITO ,  SUSUMU NOMOTO ,  MAKOTO AKUTSU ,  TOUGO ENDOU

IPC: H01M4/583 ,  H01M4/66 ,  H01M4/137 ,  H01M4/1393 ,  H01M4/04 ,  H01M2/26 ,  H01M2/16 ,  H01M10/0525

CPC classification number: H01M4/583 ,  H01G11/06 ,  H01G11/48 ,  H01G11/86 ,  H01M2/1626 ,  H01M2/26 ,  H01M4/0466 ,  H01M4/137 ,  H01M4/1393 ,  H01M4/1399 ,  H01M4/36 ,  H01M4/60 ,  H01M4/661 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0566 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2004/028

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.