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:
Dec. 29, 2015
Filed:
Apr. 16, 2012
Applicant:
Akihisa Tonegawa, Yokohama, JP;
Inventor:
Akihisa Tonegawa, Yokohama, JP;
Assignee:
SHOWA DENKO K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/88 (2006.01); H01M 4/36 (2006.01); C01B 25/45 (2006.01); H01M 4/58 (2010.01); H01M 10/052 (2010.01); H01M 4/62 (2006.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); C01B 25/45 (2013.01); H01M 4/5825 (2013.01); H01M 4/625 (2013.01); H01M 10/052 (2013.01);
Abstract
The present invention provides a method for producing a cathode-active material containing an olivine-type lithium metal phosphate for a lithium secondary battery which does not need washing or sintering after hydrothermal synthesis, the method including a step in which hydrothermal synthesis is carried out by using a mixture containing HMnPOand a lithium source as a raw material to produce an olivine-type lithium metal phosphate.