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. 22, 2022
Filed:
May. 18, 2018
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Takakazu Hirose, Annaka, JP;
Takumi Matsuno, Annaka, JP;
Reiko Sakai, Takasaki, JP;
Kohta Takahashi, Takasaki, JP;
Hidekazu Awano, Takasaki, JP;
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Abstract
A negative electrode active material contains a negative electrode active material particle which includes a silicon compound particle containing a silicon compound that contains oxygen. The silicon compound particle contains a Li compound, and at least part of Si constituting the silicon compound particle is present in at least one state selected from oxide of Sito Sicontaining no Li, and compound containing Li and Sito Si. A negative electrode active material is capable of increasing battery capacity and improving cycle characteristics and initial charge-discharge characteristics when the negative electrode active material is used for a secondary battery. A mixed negative electrode active material contains the negative electrode active material. A method produces a negative electrode active material particle which enables production of the negative electrode active material particle to be contained in the negative electrode active material as described above.