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:
Aug. 29, 2017
Filed:
Apr. 25, 2012
Isao Kabe, Yokohama, JP;
Akihiko Shirakawa, Chiba, JP;
Gaku Oriji, Yokohama, JP;
Akihisa Tonegawa, Yokohama, JP;
Isao Kabe, Yokohama, JP;
Akihiko Shirakawa, Chiba, JP;
Gaku Oriji, Yokohama, JP;
Akihisa Tonegawa, Yokohama, JP;
SHOWA DENKO K.K., Minato-ku, Tokyo, JP;
Abstract
The invention provides a method of producing a cathode active material for a lithium secondary battery, whereby it is possible to configure a lithium secondary battery in which the discharge capacity is improved and elution of lithium ions from the lithium metal phosphate is suppressed when washing the lithium metal phosphate after the same was synthesized. The method of producing a cathode active material for a lithium secondary battery includes synthesizing a lithium metal phosphate represented by a composition formula LiMPO, wherein the element M represents one or two or more of transition metals selected from among Fe, Mn, Co and Ni, and after the synthesis, washing the lithium metal phosphate with a washing liquid containing lithium ion.