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. 09, 2010
Filed:
Nov. 19, 2004
Hiroshi Minami, Tokushima, JP;
Hiromasa Yagi, Nishinomiya, JP;
Katsunobu Sayama, Kobe, JP;
Maruo Kamino, Tokushima, JP;
Hiroshi Minami, Tokushima, JP;
Hiromasa Yagi, Nishinomiya, JP;
Katsunobu Sayama, Kobe, JP;
Maruo Kamino, Tokushima, JP;
SANYO Electric Co., Ltd., Osaka, JP;
Abstract
Charge-discharge cycle performance is improved in a lithium secondary battery including a negative electrode containing a negative electrode active material having silicon as its main component, provided on a surface of a current collector, a positive electrode containing a positive electrode active material, and a non-aqueous electrolyte. The positive electrode active material is a lithium transition metal oxide containing Li and Co and having a layered structure, and further containing a group IVA element of the periodic table, such as Zr, Ti, or Tf, and a group IIA element of the periodic table, such as Mg.