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:
Oct. 27, 2020
Filed:
Mar. 12, 2019
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Fumihiro Miki, Kanagawa, JP;
Manabu Watanabe, Kanagawa, JP;
Nobutaka Chiba, Kanagawa, JP;
Kei Kitaura, Kanagawa, JP;
Tohru Wada, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Abstract
A negative electrode active material having high cycle durability contains an alloy represented by the following chemical formula (1):SiSnMA  (1)wherein M is Zn, A is unavoidable impurities, x, y, z, and a represent % by mass values, and in that case, 0<x<100, 0<y<100, 0<z<100, 0≤a<0.5, and x+y+z+a=100, in which the half width of the diffraction peak of the (111) surface of Si in the range of 2θ=24 to 33° by X ray diffraction measurement of the alloy using CuKα ray is 0.7° or more, and the x is more than 23 and less than 64, the y is 4 or more and less than 34, and the z is more than 0 and less than 65.