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:
Mar. 19, 2013
Filed:
Oct. 02, 2007
Masaya Ugaji, Osaka, JP;
Masaki Hasegawa, Osaka, JP;
Taisuke Yamamoto, Nara, JP;
Keisuke Ohara, Osaka, JP;
Yasutaka Kogetsu, Osaka, JP;
Takuhiro Nishimura, Osaka, JP;
Masaya Ugaji, Osaka, JP;
Masaki Hasegawa, Osaka, JP;
Taisuke Yamamoto, Nara, JP;
Keisuke Ohara, Osaka, JP;
Yasutaka Kogetsu, Osaka, JP;
Takuhiro Nishimura, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A negative electrode for a lithium secondary battery of the present invention includes a current collector and a negative electrode active material layer carried on the current collector. The negative electrode active material layer includes a plurality of columnar particles. The current collector has a surface including a depression and a plurality of projected regions defined by the depression. The projected regions carry the columnar particles. Further, the present invention relates to a lithium secondary battery using the foregoing negative electrode. According to the present invention, it is possible to provide a high-capacity negative electrode excellent mainly in cycle characteristics for a lithium secondary battery, and a lithium secondary battery including the same.