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:
Jan. 08, 2019
Filed:
Feb. 15, 2016
Sanyo Electric Co., Ltd., Daito-shi, Osaka, JP;
Hiroshi Minami, Hyogo, JP;
Taizou Sunano, Tokushima, JP;
SANYO Electric Co., Ltd., Daito-shi, JP;
Abstract
A non-aqueous electrolyte secondary battery that contains a silicon material as a negative-electrode active material has improved cycle life. A negative-electrode active material particle () according to an embodiment includes a lithium silicate phase () represented by LiSiO{0<z<2}, silicon particles () dispersed in the lithium silicate phase (), and a metallic compound () (other than lithium compounds and silicon oxides) dispersed in the lithium silicate phase (). The metallic compound () is preferably selected from zirconium oxide, aluminum oxide, zirconium carbide, tungsten carbide, and silicon carbide.