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:
Feb. 11, 2020
Filed:
Oct. 27, 2016
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Takumi Matsuno, Annaka, JP;
Takakazu Hirose, Annaka, JP;
Hiromichi Kamo, Takasaki, JP;
Masahiro Furuya, Takasaki, JP;
Hidekazu Awano, Takasaki, JP;
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Abstract
A negative electrode active material, wherein the negative electrode active material is a negative electrode active material including negative electrode active material particles; the negative electrode active material particles include silicon compound particles including a silicon compound (SiO: 0.5≤x≤1.6); the silicon compound particles include at least any one kind or more kinds of LiSiOand LiSiO; the negative electrode active material particles have a loose bulk density BD of 0.5 g/cmor more and 0.9 g/cmor less, a tapped bulk density TD of 0.7 g/cmor more and 1.2 g/cmor less, and a compression degree of 25% or less, the compression degree being defined by (TD−BD)/TD. Therefore, the negative electrode active material which is capable of improving the initial charge and discharge characteristics as well as the cycle characteristics upon using it as the negative electrode active material of a secondary battery is provided.