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. 18, 2013
Filed:
Apr. 07, 2008
Ryuichi Akagi, Wakayama, JP;
Kenichi Nishimura, Kouji-machi, JP;
Yasuhisa Fukumoto, Wakayama, JP;
Kyoichi Watanabe, Ebina, JP;
Tamaki Miura, Yamato, JP;
Takamitsu Saito, Yokohama, JP;
Ryuichi Akagi, Wakayama, JP;
Kenichi Nishimura, Kouji-machi, JP;
Yasuhisa Fukumoto, Wakayama, JP;
Kyoichi Watanabe, Ebina, JP;
Tamaki Miura, Yamato, JP;
Takamitsu Saito, Yokohama, JP;
Kao Corporation, Tokyo, JP;
Nissan Motor Co., Ltd., Yokohama-Shi, Kanagawa, JP;
Abstract
The positive electrode active material sintered body for a battery of the present invention is a positive electrode active material sintered body for a battery satisfying the following requirements (I) to (VII): (I) fine particles in a positive electrode active material are sintered to constitute the sintered body; (II) a peak pore diameter which provides a maximum differential pore volume value in a pore diameter range of 0.01 to 10 μm in a pore distribution is 0.3 to 5 μm; (III) a total pore volume is 0.1 to 1 cc/g; (IV) an average particle diameter is not less than the peak pore diameter and not more than 20 μm; (V) any peak, which provides a differential pore volume value of not less than 10% of the maximum differential pore volume value, is not present on a smaller pore diameter side than the peak pore diameter in the pore distribution; (VI) a BET specific surface area is 1 to 6 m/g; and (VII) a full width at half maximum of a strongest X-ray diffraction peak is 0.13 to 0.2.