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. 28, 2017
Filed:
Nov. 21, 2013
Showa Denko K.k., Tokyo, JP;
Umicore, Brussels, BE;
Arihiro Mutoh, Tokyo, JP;
Yoshiaki Ikenoue, Tokyo, JP;
Masashi Sakaguchi, Tokyo, JP;
Hirokazu Murata, Tokyo, JP;
Masataka Takeuchi, Tokyo, JP;
Nobuaki Ishii, Tokyo, JP;
SHOWA DENKO K.K., Tokyo, JP;
Abstract
A negative electrode material for lithium ion batteries is obtained by a method which includes: mixing carbon particles (B) such as graphite particles, particles (A), such as Si particles, containing an element capable of occluding and releasing lithium ions, a carbon precursor such as sucrose, a carboxylic acid compound such as acetic acid, and a liquid medium such as water or isopropyl alcohol to prepare a slurry; drying and solidifying the slurry; and heat-treating the resulting solidified material to carbonize the carbon precursor. A lithium ion battery is obtained using this negative electrode material.