公开(公告)号：US20240297347A1

公开(公告)日：2024-09-05

申请号：US18268819

申请日：2021-12-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yohei Uchiyama ,  Kiyohiro Ishii

IPC: H01M10/0569 ,  H01M4/40 ,  H01M4/46 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/42

CPC classification number: H01M10/0569 ,  H01M4/405 ,  H01M4/466 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/4235 ,  H01M2300/0034

Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte. The negative electrode includes a lithium alloy containing magnesium. At the negative electrode, a lithium metal deposits during charge, and the lithium metal dissolves during discharge. The non-aqueous electrolyte contains a hydrofluoroether and lithium ions.

公开(公告)号：US10964939B2

公开(公告)日：2021-03-30

申请号：US16476543

申请日：2018-01-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kiyohiro Ishii

IPC: C08L65/00 ,  C08L79/02 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/60 ,  H01M4/62 ,  H01M4/02

Abstract: A positive electrode for electrochemical device includes a positive current collector and a positive electrode material layer supported on the positive current collector. The positive electrode material layer includes a positive electrode active material. The positive electrode active material includes an inner core portion containing polyaniline and a surface layer portion containing poly(3,4-ethylenedioxythiophene) and polythiophene. The inner core portion is fibrous or grain-aggregate, and the surface layer portion covers at least a part of the inner core portion. Furthermore, an electrochemical device includes the above-described positive electrode, a negative electrode including a negative electrode material layer that occludes and releases a lithium ion, and a nonaqueous electrolytic solution having lithium ion conductivity.

公开(公告)号：US20240429395A1

公开(公告)日：2024-12-26

申请号：US18273864

申请日：2022-01-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Ryohei Miyamae ,  Akira Kano ,  Kiyohiro Ishii

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/36 ,  H01M10/0525

Abstract: A lithium secondary battery includes a positive electrode that absorbs lithium ions during discharge and releases the lithium ions during charge, a negative electrode at which a lithium metal deposits during charge and from which the lithium metal dissolves during discharge, and a non-aqueous electrolyte having lithium ion conductivity. The surface of the negative electrode is covered with a protective layer. The protective layer includes a block polymer in which a first polymer segment having a repeating structure of a monomer unit A and a second polymer segment having a repeating structure of a monomer unit B are bound together.