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:
Mar. 19, 2019
Filed:
Dec. 07, 2015
Powder for negative electrode of lithium ion secondary battery, and method for producing such powder
Osaka Titanium Technologies Co., Ltd., Amagasaki-shi, Hyogo, JP;
OSAKA TITANIUM TECHNOLOGIES CO., LTD., Hyogo, JP;
Abstract
This invention provides a powder for a negative electrode of a lithium ion secondary battery, which is a powder that includes a silicon oxide powder containing Li. When a molar ratio between Li, Si and O is taken as y:1:x, the average composition of the powder overall satisfies the relation 0.5<x<1.5 and the relation 0.1<y/x<0.8. The volume median diameter of the powder for a negative electrode is within a range from 0.5 to 30 μm. When X-ray diffraction measurement of the powder is performed using a Cu Kray, a relation P2/P1≤1.0 and a relation P3/P1≤1.0 are satisfied, where P1 represents a height of a peak attributed to LiSiO, P2 represents a height of a peak attributed to crystalline Si, and P3 represents a height of a peak attributed to LiSiO.