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. 21, 2017
Filed:
Jun. 25, 2012
Shinichi Yamami, Minami-Awaji, JP;
Shingo Tode, Kasai, JP;
Toyoki Fujihara, Hyogo, JP;
Toshiyuki Nohma, Kakogawa, JP;
Shinichi Yamami, Minami-Awaji, JP;
Shingo Tode, Kasai, JP;
Toyoki Fujihara, Hyogo, JP;
Toshiyuki Nohma, Kakogawa, JP;
SANYO Electric Co., Ltd., Daito-shi, JP;
Abstract
Disclosed is a non-aqueous electrolyte secondary cell excellent in capacity retention rate and I-V characteristics after repeated cycles. The secondary cell contains a negative electrode active material containing scaly graphite particles and coated graphite particles. The coated graphite particles contain graphite particles and a coating layer coating the surfaces of the graphite particles. The coating layer contains amorphous carbon particles and an amorphous carbon layer. It is preferable that the negative electrode active material contain 1 to 6% by mass of the scaly graphite particles and that the graphite particles, the amorphous carbon particles, and the amorphous carbon layer be in a mass ratio of 100:α:β where 1≦α≦10, 1≦β≦10, and α≦1.34β.