公开(公告)号：US20220328877A1

公开(公告)日：2022-10-13

申请号：US17614352

申请日：2020-06-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： HIDEO SAKATA ,  NAO MATSUMURA ,  HIDEKI SHIMAMOTO ,  KENICHI NAGAMITSU ,  NOBUTAKA TAKEDA

IPC: H01M10/0568 ,  H01M10/0525 ,  H01M4/60 ,  H01G11/48 ,  H01G11/50 ,  H01G11/62

Abstract: An electrochemical device includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolytic solution. The positive electrode active material contains a conductive polymer, and the conductive polymer is configured to be doped and dedoped with anions. The electrolytic solution contains (a) a first salt of a lithium ion and a first anion and (b) a second salt of a lithium ion and a second anion. The first anion is a bis(sulfonyl)imide anion containing fluorine.

公开(公告)号：US20240213551A1

公开(公告)日：2024-06-27

申请号：US18546965

申请日：2022-02-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： NOBUTAKA TAKEDA ,  KENICHI NAGAMITSU ,  HIDEO SAKATA

IPC: H01M10/42 ,  H01G11/28 ,  H01G11/34 ,  H01G11/62 ,  H01M4/133 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0568 ,  H01M4/02

CPC classification number: H01M10/4235 ,  H01G11/28 ,  H01G11/34 ,  H01G11/62 ,  H01M4/133 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0568 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2300/0037

Abstract: An electrochemical device includes a positive electrode, a negative electrode, and an electrolyte having lithium ion conductivity. The negative electrode includes a negative current collector and a negative electrode material layer supported on the negative current collector. The negative electrode material layer contains a negative electrode active material capable of being reversibly doped with lithium ions. The negative electrode active material contains a carbon material. The negative electrode material layer includes a coating region on a surface layer portion of the negative electrode material layer. An O1s spectrum for the coating region has a peak in a range from 530 eV to 534 eV of a binding energy in an O1s spectrum. An intensity of the peak in the O1s spectrum increases as a measuring position changes from a surface layer of the coating region toward the inside of the coating region.

公开(公告)号：US20230129000A1

公开(公告)日：2023-04-27

申请号：US17905645

申请日：2021-03-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： NOBUTAKA TAKEDA ,  TAKUYA HIROBE ,  RYOTA MORIOKA ,  KENICHI NAGAMITSU

IPC: H01M4/60 ,  H01M4/137 ,  H01M50/102

Abstract: Electrochemical device 200 disclosed includes positive electrode 10 and negative electrode 20. Positive electrode 10 includes a positive electrode material layer. The positive electrode material layer contains particles of an active material and a conductive agent. The cohesive force between the particles of the active material and the conductive agent is greater than the cohesive force between the conductive agent.