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:
Aug. 05, 2008
Filed:
Sep. 29, 2003
Hiromu Sugiyama, Suita, JP;
Hideyuki Morimoto, Gunma, JP;
Atsushi Ueda, Hirakata, JP;
Shigeo Aoyama, Otsu, JP;
Hiromu Sugiyama, Suita, JP;
Hideyuki Morimoto, Gunma, JP;
Atsushi Ueda, Hirakata, JP;
Shigeo Aoyama, Otsu, JP;
Hitachi Maxell Ltd., Ibaraki-Shi, JP;
Abstract
An electrode according to the invention can provide a non-aqueous electrolyte secondary battery having an ability to release a volume expansion at the time of charge and discharge as well as the time of a cycle. The electrode comprises a current collector made of a material which is not alloyed with Li, and a dot patternof a metallic material able to be alloyed with Li formed on the current collector. At the time of charge, since the volume expansion of each dotis carried out so as to bury adjoining crevicesbetween the dots, a stress generated is released, thereby degradation of an electrode being avoided. Each dot may also be made into porosity.