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:
May. 10, 2016
Filed:
Aug. 14, 2014
The Furukawa Battery Co., Ltd., Yokohama-shi, Kanagawa, JP;
Tokyo Metropolitan University, Tokyo, JP;
Sumitomo Osaka Cement Co., Ltd., 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., Yokohama-Shi, Kanagawa, JP;
TOKYO METROPOLITAN UNIVERSITY, Tokyo, JP;
SUMITOMO OSAKA CEMENT CO., LTD., Tokyo, JP;
Abstract
A method of manufacturing a multicomponent lithium phosphate compound particle with an olivine structure of formula LiM1M2PO, M1 is Fe, Mn or Co; Y satisfies 0.9≦Y≦1.2; M2 is Mn, Co, Mg, Ti or Al; and Z satisfies 0<Z≦0.1, in which the M2 concentration is continuously lowered from a surface of the particle to a core portion of the particle. The method includes mixing a lithium M1 phosphate compound with an olivine structure of formula LiM1PO, M1 is Fe, Mn or Co, and X satisfies 0.9≦X≦1.2, and a precursor of a lithium M2 phosphate compound with an olivine structure of formula LiM2PO, M2 is Mn, Co, Mg, Ti or Al, and X satisfies 0.9≦X≦1.2, to form a mixture; and subjecting the mixture to heating in an inert atmosphere or a vacuum.