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:
Apr. 28, 2020
Filed:
Aug. 29, 2016
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Mitsui Chemicals, Inc., Tokyo, JP;
Hiromichi Kamo, Takasaki, JP;
Takakazu Hirose, Annaka, JP;
Katsunori Nishiura, Chiba, JP;
Hitoshi Onishi, Chiba, JP;
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
MITSUI CHEMICALS, INC., Tokyo, JP;
Abstract
A production method of a negative electrode active material containing a silicon compound (SiO: 0.5≤x≤1.6) that contains Lithium includes: making a silicon compound into which the lithium has been inserted contact with a solution B containing a polycyclic aromatic compound or a derivative thereof or both thereof (here, the solution B contains one or more kinds selected from an ether-based solvent, a ketone-based solvent, an ester-based solvent, an alcohol-based solvent, and an amine-based solvent as a solvent); and making the silicon compound contact with a solution C (here, the solution C contains one or more kinds selected from an ether-based material, a ketone-based material, and an ester-based material as the solvent, and contains a compound having a quinoid structure in a molecule as a solute).