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:
Jun. 12, 2007
Filed:
Sep. 30, 2003
Katsunori Yanagida, Itami, JP;
Takao Inoue, Kobe, JP;
Naoya Nakanishi, Kobe, JP;
Atsuhiro Funahashi, Toyonaka, JP;
Toshiyuki Nohma, Kobe, JP;
Katsunori Yanagida, Itami, JP;
Takao Inoue, Kobe, JP;
Naoya Nakanishi, Kobe, JP;
Atsuhiro Funahashi, Toyonaka, JP;
Toshiyuki Nohma, Kobe, JP;
SANYO Electric Co., Ltd., Osaka, JP;
Abstract
A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode comprising a graphite as a negative electrode active material, and a nonaqueous electrolyte including at least a saturated cyclic carbonic ester and containing a cyclic carbonic ester having a carbon-carbon double bond such that, when a content of the cyclic carbonic ester having a carbon-carbon double bond is x (g), a content of the graphite in the negative electrode is B (g), a specific surface area of the graphite is A (m/g), a size of the crystallite of the graphite in a direction of the c axis is Lc, and a size of the crystallite of the graphite in a direction of the a axis is La, a condition expressed by0.05×10×2/(2)]≦3×10is satisfied.