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. 01, 2010
Filed:
Jun. 19, 2006
Norio Takami, Yokohama, JP;
Hiroyuki Hasebe, Chigasaki, JP;
Takahisa Ohsaki, Yokohama, JP;
Motoya Kanda, Yokohama, JP;
Norio Takami, Yokohama, JP;
Hiroyuki Hasebe, Chigasaki, JP;
Takahisa Ohsaki, Yokohama, JP;
Motoya Kanda, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki-shi, JP;
Abstract
The present invention provides a nonaqueous electrolyte secondary battery, comprising an electrode group including a positive electrode, a negative electrode including a material for absorbing-desorbing lithium ions, and a separator arranged between the positive electrode and the negative electrode, a nonaqueous electrolyte impregnated in the electrode group and including a nonaqueous solvent and a lithium salt dissolved in the nonaqueous solvent, and a jacket for housing the electrode group and having a thickness of 0.3 mm or less, wherein the nonaqueous solvent γ-butyrolactone in an amount larger than 50% by volume and not larger than 95% by volume based on the total amount of the nonaqueous solvent.