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:
Sep. 27, 2022
Filed:
Feb. 21, 2019
Nissan Motor Co., Ltd., Yokohama, JP;
Jsr Corporation, Tokyo, JP;
Shotaro Doi, Yokohama, JP;
Yuki Kusachi, Yokohama, JP;
Noboru Yamauchi, Yokohama, JP;
Tomohiro Kaburagi, Yokohama, JP;
Hideaki Horie, Yokohama, JP;
Yusuke Nakashima, Kyoto, JP;
Kazuya Tsuchida, Kyoto, JP;
Naofumi Shoji, Kyoto, JP;
Koji Sumiya, Tokyo, JP;
Shigehito Asano, Tokyo, JP;
Yasuyuki Koga, Tokyo, JP;
Nobuo Ando, Tokyo, JP;
Terukazu Kokubo, Tokyo, JP;
NISSAN MOTOR CO., LTD., Yokohama, JP;
JSR Corporation, Tokyo, JP;
Abstract
A predoping method for a negative electrode active material to dope the negative electrode active material with lithium ions. The predoping method for a negative electrode active material includes: a predoping process and a post-doping modification process. In the predoping process, the negative electrode active material is doped with lithium ions, to thereby reduce a potential of the negative electrode active material relative to lithium metal. In the post-doping modification process, after the predoping process, reaction is caused between a reactive compound that is reactive with lithium ions and lithium ions doped into the negative electrode active material, to thereby increase the potential of the negative electrode active material relative to lithium metal. The potential of the negative electrode active material relative to lithium metal is 0.8 V or more at completion of the post-doping modification process.