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:
Aug. 25, 2020
Filed:
Aug. 31, 2018
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Hayato Seki, Saitama, JP;
Yumiko Sekiguchi, Kawasaki, JP;
Kazuomi Yoshima, Yokohama, JP;
Yasuyuki Hotta, Tokyo, JP;
Shinsuke Matsuno, Tokyo, JP;
Norio Takami, Yokohama, JP;
KABUSHIKI KAISHA TOSHIBA, Minato-ku, JP;
Abstract
According to one embodiment, provided is a secondary battery including an aqueous electrolyte, a positive electrode, and a negative electrode. A compound containing an element A is present on at least a part of the surface of the negative electrode. The element A is at least one selected from the group consisting of Hg, Pb, Zn, and Bi. According to scanning electron microscopy, a region where the compound containing the element A is present accounts for 50% of more of the surface of the negative electrode.