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. 30, 2026
Filed:
Aug. 25, 2022
Kabushiki Kaisha Toshiba, Tokyo, JP;
Yuiko Koitabashi, Yokohama, JP;
Kazuomi Yoshima, Yokohama, JP;
Asato Kondo, Yokohama, JP;
Sayaka Morimoto, Kawasaki, JP;
Tetsuya Sasakawa, Yokohama, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Abstract
In general, according to one embodiment, a secondary battery includes a positive electrode and a nonaqueous electrolyte. The positive electrode includes a sulfur-containing layer provided on at least a part of a positive electrode active material-containing layer. The nonaqueous electrolyte includes a sulfur-containing compound consisting of at least one of a sulfur-containing imide compound or a sultone compound, or consisting of at least one of a sulfur-containing imide compound, a sultone compound or a propanesulfonic acid ester. The secondary battery satisfies 1×10≤E/A≤9×10. A denotes a mass of sulfur atoms per unit volume (g/m) of the sulfur-containing layer. E denotes a concentration (mol/L) of the sulfur-containing compound in the nonaqueous electrolyte.