The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2026
Filed:
Aug. 24, 2021
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Tetsuyuki Okano, Osaka Fu, JP;
Abstract
A lithium secondary battery includes a positive electrode, a negative electrode, and a porous separator disposed between the positive electrode and the negative electrode, a spacer disposed between the separator and at least one of the positive electrode and the negative electrode, and a non-aqueous electrolyte having lithium ion conductivity. In the negative electrode, the lithium metal deposits during charging, and the lithium metal dissolves during discharging. In a region where the negative electrode and the positive electrode face each other, a first region (R) facing the spacer and a second region (R) not facing the spacer are included. The spacer is nonporous or porous, and the spacer has a height (t) of 20 μm or more. When the spacer is porous, the spacer has a porosity Psp, the porosity Psp of the spacer being equal to or less than a porosity Pse the separator.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile