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:
Sep. 23, 2014
Filed:
Apr. 20, 2011
Hidetoshi Abe, Iwaki, JP;
Tomonori Suzuki, Iwaki, JP;
Takashi Eguro, Iwaki, JP;
Kiyoshi Kanamura, Hachioji, JP;
Mitsumasa Saito, Tokyo, JP;
Hidetoshi Abe, Iwaki, JP;
Tomonori Suzuki, Iwaki, JP;
Takashi Eguro, Iwaki, JP;
Kiyoshi Kanamura, Hachioji, JP;
Mitsumasa Saito, Tokyo, JP;
The Furukawa Battery Co., Ltd., Kanagawa, JP;
Tokyo Metropolitan University, Tokyo, JP;
Sumitomo Osaka Cement Co., Ltd., Tokyo, JP;
Abstract
There is disclosed a multi-component system lithium phosphate compound particles having an olivine structure and represented by a general formula of LiM1M2POin which M1 is one metal element selected from the group consisting of Fe, Mn and Co, Y is a number satisfying a formula of 0.9≦Y≦1.2, M2 is at least one metal element selected from the group consisting of Mn, Co, Mg, Ti and Al, and Z is an number satisfying a formula of 0<Z≦0.1, wherein a concentration of the metal element M2 existing on a surface of the particle is higher than the concentration of that existing in core portion of the particle and that the concentration of the metal element M2 is continuously lowered from the surface of particle to a core portion of the particle.