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. 09, 2011
Filed:
Jan. 29, 2007
Yasufumi Takahashi, Moriguchi, JP;
Akira Kinoshita, Moriguchi, JP;
Shingo Tode, Moriguchi, JP;
Tatsuyuki Kuwahara, Moriguchi, JP;
Kazuhiro Hasegawa, Moriguchi, JP;
Hiroyuki Fujimoto, Moriguchi, JP;
Shin Fujitani, Moriguchi, JP;
Yasufumi Takahashi, Moriguchi, JP;
Akira Kinoshita, Moriguchi, JP;
Shingo Tode, Moriguchi, JP;
Tatsuyuki Kuwahara, Moriguchi, JP;
Kazuhiro Hasegawa, Moriguchi, JP;
Hiroyuki Fujimoto, Moriguchi, JP;
Shin Fujitani, Moriguchi, JP;
SANYO Electric Co., Ltd., Osaka, JP;
Abstract
The storage characteristics in a charged state are improved in a non-aqueous electrolyte secondary battery containing a lithium cobalt oxide as a positive electrode active material. The non-aqueous electrolyte secondary battery includes a positive electrode containing a positive electrode active material; a negative electrode containing a negative electrode active material other than metallic lithium; and a non-aqueous electrolyte. The positive electrode active material contains a lithium cobalt oxide as its main component. The non-aqueous electrolyte contains 0.1 to 10 volume % of a compound having an ether group. The positive electrode active material and the negative electrode active material are contained so that the charge capacity ratio of the negative electrode to the positive electrode is from 1.0 to 1.2 when the battery is charged until the potential of the positive electrode reaches 4.4 to 4.5 V (vs. Li/Li)