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. 09, 2019
Filed:
Mar. 15, 2017
Tohoku University, Miyagi, JP;
Dowa Holdings Co., Ltd., Tokyo, JP;
Norihiro Shimoi, Miyagi, JP;
Kazuyuki Tohji, Miyagi, JP;
Yasumitsu Tanaka, Miyagi, JP;
Qiwu Zhang, Miyagi, JP;
Hiroyuki Kai, Tokyo, JP;
TOHOKU UNIVERSITY, Miyagi, JP;
DOWA HOLDINGS CO., LTD., Tokyo, JP;
Abstract
A method for producing a negative electrode active material for a lithium ion secondary battery, comprising a step of charging either silicon and copper (II) oxide or silicon and copper metal in a pulverization device, pulverizing either the silicon and copper (II) oxide or silicon and copper metal, and simultaneously mixing either silicon and copper (II) oxide or silicon and copper metal thus pulverized. A negative electrode active material for a lithium ion secondary battery is produced by the method.