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:
Nov. 03, 2020
Filed:
Mar. 15, 2018
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 10/0525 (2010.01); H01M 2/16 (2006.01); H01M 4/62 (2006.01); H01M 4/52 (2010.01); H01M 4/66 (2006.01); H01M 4/58 (2010.01); C01B 25/45 (2006.01); H01M 4/02 (2006.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 10/0525 (2013.01); C01B 25/45 (2013.01); H01M 2/1626 (2013.01); H01M 4/52 (2013.01); H01M 4/5825 (2013.01); H01M 4/623 (2013.01); H01M 4/661 (2013.01); H01M 10/052 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01);
Abstract
A positive electrode active material for a lithium ion secondary battery is lithium vanadium phosphate represented by a following composition expression (1) and in which a peak intensity ((002)/(201)) of a (002) plane normalized with respect to a peak intensity of a (201) plane and a peak intensity ((102)/(201)) of a (102) plane normalized with respect to a peak intensity of the (201) plane in an X-ray diffraction pattern satisfy 0.35≤(002)/(201)≤0.53 and 0.46≤(102)/(201)≤0.63, respectively, LiVOPO. . . (1).