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. 21, 2011
Filed:
Sep. 20, 2006
Shinji Iizuka, Shibukawa, JP;
Osamu Omae, Shibukawa, JP;
Kumiko Sueto, Shibikawa, JP;
Takeshi Shimada, Shibukawa, JP;
Shigeto Okada, Fukuoka, JP;
Tomoko Iwanaga, Fukuoka, JP;
Tomoyuki Shiratsuchi, Ohnojo, JP;
Jun-ichi Yamaki, Kasuga, JP;
Shinji Iizuka, Shibukawa, JP;
Osamu Omae, Shibukawa, JP;
Kumiko Sueto, Shibikawa, JP;
Takeshi Shimada, Shibukawa, JP;
Shigeto Okada, Fukuoka, JP;
Tomoko Iwanaga, Fukuoka, JP;
Tomoyuki Shiratsuchi, Ohnojo, JP;
Jun-ichi Yamaki, Kasuga, JP;
Kanto Denka Kogyo Co., Ltd., Tokyo, JP;
Kyushu University, National University Corp., Fukuoka, JP;
Abstract
The present invention provides an olivine-type positive electrode active material that is an inexpensive and very safe positive electrode active material that also exhibits excellent battery properties even at high energy densities. The present invention also provides a method of producing this olivine-type positive electrode active material and a nonaqueous electrolyte battery that has a positive electrode that contains this olivine-type positive electrode active material. The present invention relates to a positive electrode active material that comprises an olivine-type lithium manganese phosphate compound represented by the following general formula (1)LiMnMPO  (1)(in the formula, 0<x<2, 0<y<1, 0<a<1, and M is at least one metal element selected from the group consisting of Co, Ni, Fe, Zn, Cu, Ti, Sn, Zr, V, and Al) and that has a particle diameter of 10 to 500 nm.