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:
Jan. 21, 2014
Filed:
Dec. 23, 2010
Kentaro Takahashi, Sumoto, JP;
Shinya Furukawa, Sumoto, JP;
Kentaro Takahashi, Sumoto, JP;
Shinya Furukawa, Sumoto, JP;
SANYO Electric Co., Ltd., Moriguchi-shi, Osaka, JP;
Abstract
The lithium ion polymer battery includes a positive electrode plate formed with a positive electrode mixture layer having a lithium composite oxide as a positive electrode active material, a negative electrode plate, a separator, and a gel nonaqueous electrolyte, the positive electrode active material having an average particle diameter of 4.5 to 15.5 μm and a specific surface area of 0.13 to 0.80 m/g, the positive electrode mixture layer containing at least one of aluminum, titanium, or zirconium based coupling agent having an alkyl or an alkoxy groups having 1 to 18 carbon atoms at a content of 0.01% or more and 5% or less by mass with respect to the mass of the positive electrode active material, and the gel nonaqueous electrolyte being formed from a nonaqueous electrolyte containing a monomer having a (meth)acrylic end group. Thus improved nail penetration characteristics and superior cycle characteristics are obtained.