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:
Jun. 18, 2024
Filed:
Sep. 24, 2021
Prime Planet Energy & Solutions, Inc., Tokyo, JP;
Atsushi Obayashi, Sumoto, JP;
Hikaru Yoshida, Ibaraki, JP;
Prime Planet Energy & Solutions, Inc., Tokyo, JP;
Abstract
A non-aqueous electrolyte secondary battery comprises a positive electrode, a negative electrode, a separator, and an electrolyte solution. At least part of the separator is interposed between the positive electrode and the negative electrode. The negative electrode includes a negative electrode substrate and a negative electrode active material layer. The negative electrode active material layer is placed on a surface of the negative electrode substrate. Voids are formed in the negative electrode active material layer. In a cross section parallel to a thickness direction of the negative electrode active material layer, the voids have an average equivalent circle diameter from 9.6 μm to 35.8 μm, an average circularity of 0.26 or more, and an area percentage from 3.1% to 30.9%.