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:
Nov. 25, 2008
Filed:
Jan. 15, 2004
Hiroyuki Fujimoto, Kobe, JP;
Akira Kinoshita, Kobe, JP;
Toyoki Fujihara, Naruto, JP;
Shingo Tode, Kobe, JP;
Yasufumi Takahashi, Kobe, JP;
Ikuro Nakane, Kobe, JP;
Shin Fujitani, Kobe, JP;
Hiroyuki Fujimoto, Kobe, JP;
Akira Kinoshita, Kobe, JP;
Toyoki Fujihara, Naruto, JP;
Shingo Tode, Kobe, JP;
Yasufumi Takahashi, Kobe, JP;
Ikuro Nakane, Kobe, JP;
Shin Fujitani, Kobe, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A nonaqueous electrolyte secondary battery wherein a material capable of occluding/discharging lithium is used as a negative electrode material and a lithium-transition metal composite oxide which contains Ni and Mn as the transition metal and has a layered structure is used as a positive electrode material is characterized in that a lithium-transition metal composite oxide having a BET specific surface area less than 3 m/g and a pH of 11.0 or less when 5 g of the lithium-transition metal composite oxide is immersed in 50 ml of purified water is used as the positive electrode active material.