Title:
リチウム二次電池
Document Type and Number:
Japanese Patent JP7113226
Kind Code:
B2
Abstract:
A lithium secondary battery includes a wound electrode group and a lithium-ion conductive nonaqueous electrolyte. The wound electrode group includes a positive electrode, a negative electrode, and a separator between the positive electrode and the negative electrode. The negative electrode includes a negative electrode current collector. The negative electrode current collector includes: a layer having a first surface facing outward of the winding of the electrode group and a second surface facing inward of the winding of the electrode group; first protrusions protruding from the first surface; and second protrusions protruding from the second surface. Lithium metal is deposited on the first surface and the second surface by charging. A second average height of the second protrusions is higher than a first average height of the first protrusions.
Inventors:
Satoshi Kashino
Ryohei Miyamae
Seikei Ishii
Jun Sakamoto
Ryohei Miyamae
Seikei Ishii
Jun Sakamoto
Application Number:
JP2018197849A
Publication Date:
August 05, 2022
Filing Date:
October 19, 2018
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
H01M10/0587; H01M4/134; H01M4/64; H01M4/66; H01M10/052; H01M10/0568
Domestic Patent References:
| JP10012279A | ||||
| JP2006156351A | ||||
| JP2007242262A |
Foreign References:
| WO2008029719A1 |
Attorney, Agent or Firm:
Patent Attorney Kawasaki Patent Office