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:
Jul. 02, 2019
Filed:
Nov. 10, 2016
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Nobutaka Chiba, Kanagawa, JP;
Tomohiro Kaburagi, Kanagawa, JP;
Youichi Yoshioka, Kanagawa, JP;
Manabu Watanabe, Kanagawa, JP;
Masaya Arai, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Abstract
To provide a means capable of improving the cycle durability of an electric device such as a lithium ion secondary battery. A negative electrode active material containing a silicon-containing alloy having ternary alloy composition represented by Si—Sn-M (M is one or two or more transition metal elements) or quaternary alloy composition represented by Si—Sn-M-Al (M is one or two or more transition metal elements) and having a structure wherein an a-Si phase containing amorphous or low crystalline silicon containing tin in a silicon crystal structure in form of a solid solution is dispersed in a silicide phase containing a silicide of a transition metal as a main component is used in an electric device. The negative electrode active material improves the cycle durability of an electric device such as a lithium ion secondary battery.